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6402 Update zoneinfo to 2015g
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Reviewed by: Marcel Telka <marcel@telka.sk>
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--- old/usr/src/cmd/zic/northamerica
+++ new/usr/src/cmd/zic/northamerica
1 1 # This file is in the public domain, so clarified as of
2 2 # 2009-05-17 by Arthur David Olson.
3 3
4 4 # also includes Central America and the Caribbean
5 5
6 6 # This file is by no means authoritative; if you think you know better,
7 7 # go ahead and edit the file (and please send any changes to
8 8 # tz@iana.org for general use in the future). For more, please see
9 9 # the file CONTRIBUTING in the tz distribution.
10 10
11 11 # From Paul Eggert (1999-03-22):
12 12 # A reliable and entertaining source about time zones is
13 13 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
14 14
15 15 ###############################################################################
16 16
17 17 # United States
18 18
19 19 # From Paul Eggert (1999-03-31):
20 20 # Howse writes (pp 121-125) that time zones were invented by
21 21 # Professor Charles Ferdinand Dowd (1825-1904),
22 22 # Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY).
23 23 # His pamphlet "A System of National Time for Railroads" (1870)
24 24 # was the result of his proposals at the Convention of Railroad Trunk Lines
25 25 # in New York City (1869-10). His 1870 proposal was based on Washington, DC,
26 26 # but in 1872-05 he moved the proposed origin to Greenwich.
27 27 # His proposal was adopted by the railroads on 1883-11-18 at 12:00,
28 28 # and the most of the country soon followed suit.
29 29
30 30 # From Paul Eggert (2005-04-16):
31 31 # That 1883 transition occurred at 12:00 new time, not at 12:00 old time.
32 32 # See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005).
33 33
34 34 # From Paul Eggert (2006-03-22):
35 35 # A good source for time zone historical data in the US is
36 36 # Thomas G. Shanks, The American Atlas (5th edition),
37 37 # San Diego: ACS Publications, Inc. (1991).
38 38 # Make sure you have the errata sheet; the book is somewhat useless without it.
39 39 # It is the source for most of the pre-1991 US entries below.
40 40
41 41 # From Paul Eggert (2001-03-06):
42 42 # Daylight Saving Time was first suggested as a joke by Benjamin Franklin
43 43 # in his whimsical essay "An Economical Project for Diminishing the Cost
44 44 # of Light" published in the Journal de Paris (1784-04-26).
45 45 # Not everyone is happy with the results:
46 46 #
47 47 # I don't really care how time is reckoned so long as there is some
48 48 # agreement about it, but I object to being told that I am saving
49 49 # daylight when my reason tells me that I am doing nothing of the kind.
50 50 # I even object to the implication that I am wasting something
51 51 # valuable if I stay in bed after the sun has risen. As an admirer
52 52 # of moonlight I resent the bossy insistence of those who want to
53 53 # reduce my time for enjoying it. At the back of the Daylight Saving
54 54 # scheme I detect the bony, blue-fingered hand of Puritanism, eager
55 55 # to push people into bed earlier, and get them up earlier, to make
56 56 # them healthy, wealthy and wise in spite of themselves.
57 57 #
58 58 # -- Robertson Davies, The diary of Samuel Marchbanks,
59 59 # Clarke, Irwin (1947), XIX, Sunday
60 60 #
61 61 # For more about the first ten years of DST in the United States, see
62 62 # Robert Garland, Ten years of daylight saving from the Pittsburgh standpoint
63 63 # (Carnegie Library of Pittsburgh, 1927).
64 64 # http://www.clpgh.org/exhibit/dst.html
65 65 #
66 66 # Shanks says that DST was called "War Time" in the US in 1918 and 1919.
67 67 # However, DST was imposed by the Standard Time Act of 1918, which
68 68 # was the first nationwide legal time standard, and apparently
69 69 # time was just called "Standard Time" or "Daylight Saving Time".
70 70
71 71 # From Arthur David Olson:
72 72 # US Daylight Saving Time ended on the last Sunday of *October* in 1974.
73 73 # See, for example, the front page of the Saturday, 1974-10-26
74 74 # and Sunday, 1974-10-27 editions of the Washington Post.
75 75
76 76 # From Arthur David Olson:
77 77 # Before the Uniform Time Act of 1966 took effect in 1967, observance of
78 78 # Daylight Saving Time in the US was by local option, except during wartime.
79 79
80 80 # From Arthur David Olson (2000-09-25):
81 81 # Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama.
82 82 # In the introduction, Oboler spoke of "Eastern Peace Time."
83 83 # An AltaVista search turned up:
84 84 # http://rowayton.org/rhs/hstaug45.html
85 85 # "When the time is announced over the radio now, it is 'Eastern Peace
86 86 # Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
87 87 # (August 1945) by way of confirmation.
88 88
89 89 # From Joseph Gallant citing
90 90 # George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
91 91 # At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set
92 92 # to switch to London for Attlee's address, but the American people
93 93 # never got to hear his speech live. According to one press account,
94 94 # CBS' Bob Trout was first to announce the word of Japan's surrender,
95 95 # but a few seconds later, NBC, ABC and Mutual also flashed the word
96 96 # of surrender, all of whom interrupting the bells of Big Ben in
97 97 # London which were to precede Mr. Attlee's speech.
98 98
99 99 # From Paul Eggert (2003-02-09): It was Robert St John, not Bob Trout. From
100 100 # Myrna Oliver's obituary of St John on page B16 of today's Los Angeles Times:
101 101 #
102 102 # ... a war-weary U.S. clung to radios, awaiting word of Japan's surrender.
103 103 # Any announcement from Asia would reach St. John's New York newsroom on a
104 104 # wire service teletype machine, which had prescribed signals for major news.
105 105 # Associated Press, for example, would ring five bells before spewing out
106 106 # typed copy of an important story, and 10 bells for news "of transcendental
107 107 # importance."
108 108 #
109 109 # On Aug. 14, stalling while talking steadily into the NBC networks' open
110 110 # microphone, St. John heard five bells and waited only to hear a sixth bell,
111 111 # before announcing confidently: "Ladies and gentlemen, World War II is over.
112 112 # The Japanese have agreed to our surrender terms."
113 113 #
114 114 # He had scored a 20-second scoop on other broadcasters.
115 115
116 116 # From Arthur David Olson (2005-08-22):
117 117 # Paul has been careful to use the "US" rules only in those locations
118 118 # that are part of the United States; this reflects the real scope of
119 119 # U.S. government action. So even though the "US" rules have changed
120 120 # in the latest release, other countries won't be affected.
121 121
122 122 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
123 123 Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
124 124 Rule US 1918 1919 - Oct lastSun 2:00 0 S
125 125 Rule US 1942 only - Feb 9 2:00 1:00 W # War
126 126 Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
127 127 Rule US 1945 only - Sep lastSun 2:00 0 S
128 128 Rule US 1967 2006 - Oct lastSun 2:00 0 S
129 129 Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
130 130 Rule US 1974 only - Jan 6 2:00 1:00 D
131 131 Rule US 1975 only - Feb 23 2:00 1:00 D
132 132 Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
133 133 Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
134 134 Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
135 135 Rule US 2007 max - Nov Sun>=1 2:00 0 S
136 136
137 137 # From Arthur David Olson, 2005-12-19
138 138 # We generate the files specified below to guard against old files with
139 139 # obsolete information being left in the time zone binary directory.
140 140 # We limit the list to names that have appeared in previous versions of
141 141 # this time zone package.
142 142 # We do these as separate Zones rather than as Links to avoid problems if
143 143 # a particular place changes whether it observes DST.
144 144 # We put these specifications here in the northamerica file both to
145 145 # increase the chances that they'll actually get compiled and to
146 146 # avoid the need to duplicate the US rules in another file.
147 147
148 148 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
149 149 Zone EST -5:00 - EST
150 150 Zone MST -7:00 - MST
151 151 Zone HST -10:00 - HST
152 152 Zone EST5EDT -5:00 US E%sT
153 153 Zone CST6CDT -6:00 US C%sT
154 154 Zone MST7MDT -7:00 US M%sT
155 155 Zone PST8PDT -8:00 US P%sT
156 156
157 157 # From Bob Devine (1988-01-28):
158 158 # ...Alaska (and Hawaii) had the timezone names changed in 1967.
159 159 # old new
160 160 # Pacific Standard Time(PST) -same-
161 161 # Yukon Standard Time(YST) -same-
162 162 # Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
163 163 # Nome Standard Time (NT) Bering Standard Time (BST)
164 164 #
165 165 # ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
166 166 # The YST zone now covers nearly all of the state, AHST just part
167 167 # of the Aleutian islands. No DST.
168 168
169 169 # From Paul Eggert (1995-12-19):
170 170 # The tables below use 'NST', not 'NT', for Nome Standard Time.
171 171 # I invented 'CAWT' for Central Alaska War Time.
172 172
173 173 # From U. S. Naval Observatory (1989-01-19):
174 174 # USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
175 175 # USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
176 176 # USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
177 177 # USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
178 178 # USA MOUNTAIN 7 H BEHIND UTC DENVER
179 179 # USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30
180 180 # USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO
181 181 # USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30
182 182 # USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST)
183 183 # USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT)
184 184 # USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W
185 185 # USA " 9 H BEHIND UTC APR 3 - OCT 30
186 186 # USA HAWAII 10 H BEHIND UTC
187 187 # USA BERING 11 H BEHIND UTC SAMOA, MIDWAY
188 188
189 189 # From Arthur David Olson (1989-01-21):
190 190 # The above dates are for 1988.
191 191 # Note the "AKST" and "AKDT" abbreviations, the claim that there's
192 192 # no DST in Samoa, and the claim that there is DST in Alaska and the
193 193 # Aleutians.
194 194
195 195 # From Arthur David Olson (1988-02-13):
196 196 # Legal standard time zone names, from United States Code (1982 Edition and
197 197 # Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names
198 198 # up to 1967-04-01 (when most provisions of the Uniform Time Act of 1966
199 199 # took effect), as explained in sections 263 and 261:
200 200 # (none)
201 201 # United States standard eastern time
202 202 # United States standard mountain time
203 203 # United States standard central time
204 204 # United States standard Pacific time
205 205 # (none)
206 206 # United States standard Alaska time
207 207 # (none)
208 208 # Next, names from 1967-04-01 until 1983-11-30 (the date for
209 209 # public law 98-181):
210 210 # Atlantic standard time
211 211 # eastern standard time
212 212 # central standard time
213 213 # mountain standard time
214 214 # Pacific standard time
215 215 # Yukon standard time
216 216 # Alaska-Hawaii standard time
217 217 # Bering standard time
218 218 # And after 1983-11-30:
219 219 # Atlantic standard time
|
↓ open down ↓ |
219 lines elided |
↑ open up ↑ |
220 220 # eastern standard time
221 221 # central standard time
222 222 # mountain standard time
223 223 # Pacific standard time
224 224 # Alaska standard time
225 225 # Hawaii-Aleutian standard time
226 226 # Samoa standard time
227 227 # The law doesn't give abbreviations.
228 228 #
229 229 # From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
230 -# Public law 106-564 (2000-12-23) introduced the abbreviation
231 -# "Chamorro Standard Time" for time in Guam and the Northern Marianas.
232 -# See the file "australasia".
230 +# Public law 106-564 (2000-12-23) introduced ... "Chamorro Standard Time"
231 +# for time in Guam and the Northern Marianas. See the file "australasia".
232 +#
233 +# From Paul Eggert (2015-04-17):
234 +# HST and HDT are standardized abbreviations for Hawaii-Aleutian
235 +# standard and daylight times. See section 9.47 (p 234) of the
236 +# U.S. Government Printing Office Style Manual (2008)
237 +# http://www.gpo.gov/fdsys/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008.pdf
233 238
234 239 # From Arthur David Olson, 2005-08-09
235 240 # The following was signed into law on 2005-08-08.
236 241 #
237 242 # H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS.
238 243 # (a) Amendment.--Section 3(a) of the Uniform Time Act of 1966 (15
239 244 # U.S.C. 260a(a)) is amended--
240 245 # (1) by striking "first Sunday of April" and inserting "second
241 246 # Sunday of March"; and
242 247 # (2) by striking "last Sunday of October" and inserting "first
243 248 # Sunday of November'.
244 249 # (b) Effective Date.--Subsection (a) shall take effect 1 year after the
245 250 # date of enactment of this Act or March 1, 2007, whichever is later.
246 251 # (c) Report to Congress.--Not later than 9 months after the effective
247 252 # date stated in subsection (b), the Secretary shall report to Congress
248 253 # on the impact of this section on energy consumption in the United
249 254 # States.
250 255 # (d) Right to Revert.--Congress retains the right to revert the
251 256 # Daylight Saving Time back to the 2005 time schedules once the
252 257 # Department study is complete.
253 258
254 259 # US eastern time, represented by New York
255 260
256 261 # Connecticut, Delaware, District of Columbia, most of Florida,
257 262 # Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky
258 263 # (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts,
259 264 # New Hampshire, New Jersey, New York, North Carolina, Ohio,
260 265 # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
261 266 # Vermont, Virginia, West Virginia
262 267
263 268 # From Dave Cantor (2004-11-02):
264 269 # Early this summer I had the occasion to visit the Mount Washington
265 270 # Observatory weather station atop (of course!) Mount Washington [, NH]....
266 271 # One of the staff members said that the station was on Eastern Standard Time
267 272 # and didn't change their clocks for Daylight Saving ... so that their
268 273 # reports will always have times which are 5 hours behind UTC.
269 274
270 275 # From Paul Eggert (2005-08-26):
271 276 # According to today's Huntsville Times
272 277 # http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1
273 278 # a few towns on Alabama's "eastern border with Georgia, such as Phenix City
274 279 # in Russell County, Lanett in Chambers County and some towns in Lee County,
275 280 # set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
276 281 # Roberts, city administrator in Phenix City. as saying "We are in the Central
277 282 # time zone, but we do go by the Eastern time zone because so many people work
278 283 # in Columbus."
279 284
280 285 # From Paul Eggert (2014-09-06):
281 286 # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
282 287 # says that New York City Hall time was 3 minutes 58.4 seconds fast of
283 288 # Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the
284 289 # nearest second.
285 290
286 291 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
287 292 Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
288 293 Rule NYC 1920 only - Oct lastSun 2:00 0 S
289 294 Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
290 295 Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
291 296 Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
292 297 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
293 298 Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
294 299 -5:00 US E%sT 1920
295 300 -5:00 NYC E%sT 1942
296 301 -5:00 US E%sT 1946
297 302 -5:00 NYC E%sT 1967
298 303 -5:00 US E%sT
299 304
300 305 # US central time, represented by Chicago
301 306
302 307 # Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
303 308 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
304 309 # Washington counties), Illinois, western Indiana
305 310 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
306 311 # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
307 312 # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
308 313 # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
309 314 # western Tennessee, most of Texas, Wisconsin
310 315
311 316 # From Larry M. Smith (2006-04-26) re Wisconsin:
312 317 # http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
313 318 # is currently enforced at the 01:00 time of change. Because the local
314 319 # "bar time" in the state corresponds to 02:00, a number of citations
315 320 # are issued for the "sale of class 'B' alcohol after prohibited
316 321 # hours" within the deviated hour of this change every year....
317 322 #
318 323 # From Douglas R. Bomberg (2007-03-12):
319 324 # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
320 325 # Statue 175 closer in synch with the US Congress' intent....
321 326 # http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
322 327
323 328 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
324 329 Rule Chicago 1920 only - Jun 13 2:00 1:00 D
325 330 Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
326 331 Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
327 332 Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
328 333 Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
329 334 Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
330 335 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
331 336 Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
332 337 -6:00 US C%sT 1920
333 338 -6:00 Chicago C%sT 1936 Mar 1 2:00
334 339 -5:00 - EST 1936 Nov 15 2:00
335 340 -6:00 Chicago C%sT 1942
336 341 -6:00 US C%sT 1946
337 342 -6:00 Chicago C%sT 1967
338 343 -6:00 US C%sT
339 344 # Oliver County, ND switched from mountain to central time on 1992-10-25.
340 345 Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48
341 346 -7:00 US M%sT 1992 Oct 25 2:00
342 347 -6:00 US C%sT
343 348 # Morton County, ND, switched from mountain to central time on
344 349 # 2003-10-26, except for the area around Mandan which was already central time.
345 350 # See <http://dmses.dot.gov/docimages/p63/135818.pdf>.
346 351 # Officially this switch also included part of Sioux County, and
347 352 # Jones, Mellette, and Todd Counties in South Dakota;
348 353 # but in practice these other counties were already observing central time.
349 354 # See <http://www.epa.gov/fedrgstr/EPA-IMPACT/2003/October/Day-28/i27056.htm>.
350 355 Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21
351 356 -7:00 US M%sT 2003 Oct 26 2:00
352 357 -6:00 US C%sT
353 358
354 359 # From Josh Findley (2011-01-21):
355 360 # ...it appears that Mercer County, North Dakota, changed from the
356 361 # mountain time zone to the central time zone at the last transition from
357 362 # daylight-saving to standard time (on Nov. 7, 2010):
358 363 # http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm
359 364 # http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html
360 365
361 366 # From Andy Lipscomb (2011-01-24):
362 367 # ...according to the Census Bureau, the largest city is Beulah (although
363 368 # it's commonly referred to as Beulah-Hazen, with Hazen being the next
364 369 # largest city in Mercer County). Google Maps places Beulah's city hall
365 370 # at 47 degrees 15' 51" N, 101 degrees 46' 40" W, which yields an offset
366 371 # of 6h47'07".
367 372
368 373 Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53
369 374 -7:00 US M%sT 2010 Nov 7 2:00
370 375 -6:00 US C%sT
371 376
372 377 # US mountain time, represented by Denver
373 378 #
374 379 # Colorado, far western Kansas, Montana, western
375 380 # Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City),
376 381 # New Mexico, southwestern North Dakota,
377 382 # western South Dakota, far western Texas (El Paso County, Hudspeth County,
378 383 # and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
379 384 #
380 385 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
381 386 Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
382 387 Rule Denver 1920 only - Oct lastSun 2:00 0 S
383 388 Rule Denver 1921 only - May 22 2:00 0 S
384 389 Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
385 390 Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
386 391 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
387 392 Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04
388 393 -7:00 US M%sT 1920
389 394 -7:00 Denver M%sT 1942
390 395 -7:00 US M%sT 1946
391 396 -7:00 Denver M%sT 1967
392 397 -7:00 US M%sT
393 398
394 399 # US Pacific time, represented by Los Angeles
395 400 #
396 401 # California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
397 402 # Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county
398 403 # north of the Salmon River, and the towns of Burgdorf and Warren),
399 404 # Nevada (except West Wendover), Oregon (except the northern 3/4 of
400 405 # Malheur county), and Washington
401 406 #
402 407 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
403 408 Rule CA 1948 only - Mar 14 2:00 1:00 D
404 409 Rule CA 1949 only - Jan 1 2:00 0 S
405 410 Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
406 411 Rule CA 1950 1961 - Sep lastSun 2:00 0 S
407 412 Rule CA 1962 1966 - Oct lastSun 2:00 0 S
408 413 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
409 414 Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
410 415 -8:00 US P%sT 1946
411 416 -8:00 CA P%sT 1967
412 417 -8:00 US P%sT
413 418
414 419 # Alaska
415 420 # AK%sT is the modern abbreviation for -9:00 per USNO.
416 421 #
417 422 # From Paul Eggert (2001-05-30):
418 423 # Howse writes that Alaska switched from the Julian to the Gregorian calendar,
419 424 # and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
420 425 # This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
421 426 # also a Friday. Include only the time zone part of this transition,
422 427 # ignoring the switch from Julian to Gregorian, since we can't represent
423 428 # the Julian calendar.
424 429 #
425 430 # As far as we know, none of the exact locations mentioned below were
426 431 # permanently inhabited in 1867 by anyone using either calendar.
427 432 # (Yakutat was colonized by the Russians in 1799, but the settlement
428 433 # was destroyed in 1805 by a Yakutat-kon war party.) However, there
429 434 # were nearby inhabitants in some cases and for our purposes perhaps
430 435 # it's best to simply use the official transition.
431 436
432 437 # From Paul Eggert (2014-07-18):
433 438 # One opinion of the early-1980s turmoil in Alaska over time zones and
434 439 # daylight saving time appeared as graffiti on a Juneau airport wall:
435 440 # "Welcome to Juneau. Please turn your watch back to the 19th century."
436 441 # See: Turner W. Alaska's four time zones now two. NY Times 1983-11-01.
437 442 # http://www.nytimes.com/1983/11/01/us/alaska-s-four-time-zones-now-two.html
438 443 #
439 444 # Steve Ferguson (2011-01-31) referred to the following source:
440 445 # Norris F. Keeping time in Alaska: national directives, local response.
441 446 # Alaska History 2001;16(1-2).
442 447 # http://alaskahistoricalsociety.org/discover-alaska/glimpses-of-the-past/keeping-time-in-alaska/
443 448
444 449 # From Arthur David Olson (2011-02-01):
445 450 # Here's database-relevant material from the 2001 "Alaska History" article:
446 451 #
447 452 # On September 20 [1979]...DOT...officials decreed that on April 27,
448 453 # 1980, Juneau and other nearby communities would move to Yukon Time.
449 454 # Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on
450 455 # Pacific Time.
451 456 #
452 457 # ...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the
453 458 # Department's September 1979 decision. Juneau and other communities in
454 459 # northern Southeast reverted to Pacific Time on October 26.
455 460 #
456 461 # On October 28 [1983]...the Metlakatla Indian Community Council voted
457 462 # unanimously to keep the reservation on Pacific Time.
458 463 #
459 464 # According to DOT official Joanne Petrie, Indian reservations are not
460 465 # bound to follow time zones imposed by neighboring jurisdictions.
461 466 #
462 467 # (The last is consistent with how the database now handles the Navajo
463 468 # Nation.)
464 469
465 470 # From Arthur David Olson (2011-02-09):
466 471 # I just spoke by phone with a staff member at the Metlakatla Indian
467 472 # Community office (using contact information available at
468 473 # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla
469 474 # It's shortly after 1:00 here on the east coast of the United States;
470 475 # the staffer said it was shortly after 10:00 there. When I asked whether
471 476 # that meant they were on Pacific time, they said no - they were on their
472 477 # own time. I asked about daylight saving; they said it wasn't used. I
473 478 # did not inquire about practices in the past.
474 479
475 480 # From Arthur David Olson (2011-08-17):
476 481 # For lack of better information, assume that Metlakatla's
477 482 # abandonment of use of daylight saving resulted from the 1983 vote.
478 483
479 484 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
480 485 Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
481 486 -8:57:41 - LMT 1900 Aug 20 12:00
482 487 -8:00 - PST 1942
483 488 -8:00 US P%sT 1946
484 489 -8:00 - PST 1969
485 490 -8:00 US P%sT 1980 Apr 27 2:00
486 491 -9:00 US Y%sT 1980 Oct 26 2:00
487 492 -8:00 US P%sT 1983 Oct 30 2:00
488 493 -9:00 US Y%sT 1983 Nov 30
489 494 -9:00 US AK%sT
490 495 Zone America/Sitka 14:58:47 - LMT 1867 Oct 18
491 496 -9:01:13 - LMT 1900 Aug 20 12:00
492 497 -8:00 - PST 1942
493 498 -8:00 US P%sT 1946
494 499 -8:00 - PST 1969
495 500 -8:00 US P%sT 1983 Oct 30 2:00
496 501 -9:00 US Y%sT 1983 Nov 30
497 502 -9:00 US AK%sT
498 503 Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18
499 504 -8:46:18 - LMT 1900 Aug 20 12:00
500 505 -8:00 - PST 1942
501 506 -8:00 US P%sT 1946
502 507 -8:00 - PST 1969
503 508 -8:00 US P%sT 1983 Oct 30 2:00
504 509 -8:00 - PST
505 510 Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
506 511 -9:18:55 - LMT 1900 Aug 20 12:00
507 512 -9:00 - YST 1942
508 513 -9:00 US Y%sT 1946
509 514 -9:00 - YST 1969
510 515 -9:00 US Y%sT 1983 Nov 30
511 516 -9:00 US AK%sT
512 517 Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
513 518 -9:59:36 - LMT 1900 Aug 20 12:00
514 519 -10:00 - CAT 1942
515 520 -10:00 US CAT/CAWT 1945 Aug 14 23:00u
516 521 -10:00 US CAT/CAPT 1946 # Peace
517 522 -10:00 - CAT 1967 Apr
518 523 -10:00 - AHST 1969
519 524 -10:00 US AH%sT 1983 Oct 30 2:00
520 525 -9:00 US Y%sT 1983 Nov 30
521 526 -9:00 US AK%sT
522 527 Zone America/Nome 12:58:21 - LMT 1867 Oct 18
523 528 -11:01:38 - LMT 1900 Aug 20 12:00
524 529 -11:00 - NST 1942
525 530 -11:00 US N%sT 1946
526 531 -11:00 - NST 1967 Apr
527 532 -11:00 - BST 1969
528 533 -11:00 US B%sT 1983 Oct 30 2:00
|
↓ open down ↓ |
286 lines elided |
↑ open up ↑ |
529 534 -9:00 US Y%sT 1983 Nov 30
530 535 -9:00 US AK%sT
531 536 Zone America/Adak 12:13:21 - LMT 1867 Oct 18
532 537 -11:46:38 - LMT 1900 Aug 20 12:00
533 538 -11:00 - NST 1942
534 539 -11:00 US N%sT 1946
535 540 -11:00 - NST 1967 Apr
536 541 -11:00 - BST 1969
537 542 -11:00 US B%sT 1983 Oct 30 2:00
538 543 -10:00 US AH%sT 1983 Nov 30
539 - -10:00 US HA%sT
544 + -10:00 US H%sT
540 545 # The following switches don't quite make our 1970 cutoff.
541 546 #
542 547 # Shanks writes that part of southwest Alaska (e.g. Aniak)
543 548 # switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
544 549 # and another part (e.g. Akiak) made the same switch five weeks later.
545 550 #
546 551 # From David Flater (2004-11-09):
547 552 # In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska
548 553 # Historic Preservation Commission, provided this information, which
549 554 # suggests that Unalaska deviated from statutory time from early 1967
550 555 # possibly until 1983:
551 556 #
552 557 # Minutes of the Unalaska City Council Meeting, January 10, 1967:
553 558 # "Except for St. Paul and Akutan, Unalaska is the only important
554 559 # location not on Alaska Standard Time. The following resolution was
555 560 # made by William Robinson and seconded by Henry Swanson: Be it
556 561 # resolved that the City of Unalaska hereby goes to Alaska Standard
557 562 # Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday,
558 563 # January 14, Alaska Standard Time.) This resolution was passed with
559 564 # three votes for and one against."
560 565
561 566 # Hawaii
562 567
563 568 # From Arthur David Olson (2010-12-09):
564 569 # "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225
565 570 # of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09,
566 571 # the article is available at
567 572 # http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf
568 573 # and indicates that standard time was adopted effective noon, January
569 574 # 13, 1896 (page 218), that in "1933, the Legislature decreed daylight
570 575 # saving for the period between the last Sunday of each April and the
571 576 # last Sunday of each September, but less than a month later repealed the
572 577 # act," (page 220), that year-round daylight saving time was in effect
573 578 # from 1942-02-09 to 1945-09-30 (page 221, with no time of day given for
574 579 # when clocks changed) and that clocks were changed by 30 minutes
575 580 # effective the second Sunday of June, 1947 (page 219, with no time of
576 581 # day given for when clocks changed). A footnote for the 1933 changes
577 582 # cites Session Laws of Hawaii 1933, "Act. 90 (approved 26 Apr. 1933)
578 583 # and Act 163 (approved 21 May 1933)."
579 584
580 585 # From Arthur David Olson (2011-01-19):
581 586 # The following is from "Laws of the Territory of Hawaii Passed by the
582 587 # Seventeenth Legislature: Regular Session 1933," available (as of
583 588 # 2011-01-19) at American University's Pence Law Library. Page 85: "Act
584 589 # 90...At 2 o'clock ante meridian of the last Sunday in April of each
585 590 # year, the standard time of this Territory shall be advanced one
586 591 # hour...This Act shall take effect upon its approval. Approved this 26th
587 592 # day of April, A. D. 1933. LAWRENCE M JUDD, Governor of the Territory of
588 593 # Hawaii." Page 172: "Act 163...Act 90 of the Session Laws of 1933 is
589 594 # hereby repealed...This Act shall take effect upon its approval, upon
590 595 # which date the standard time of this Territory shall be restored to
591 596 # that existing immediately prior to the taking effect of said Act 90.
592 597 # Approved this 21st day of May, A. D. 1933. LAWRENCE M. JUDD, Governor
593 598 # of the Territory of Hawaii."
594 599 #
595 600 # Note that 1933-05-21 was a Sunday.
596 601 # We're left to guess the time of day when Act 163 was approved; guess noon.
597 602
598 603 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
599 604 Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
600 605 -10:30 - HST 1933 Apr 30 2:00
601 606 -10:30 1:00 HDT 1933 May 21 12:00
602 607 -10:30 - HST 1942 Feb 9 2:00
603 608 -10:30 1:00 HDT 1945 Sep 30 2:00
604 609 -10:30 - HST 1947 Jun 8 2:00
605 610 -10:00 - HST
606 611 Link Pacific/Honolulu Pacific/Johnston
607 612
608 613 # Now we turn to US areas that have diverged from the consensus since 1970.
609 614
610 615 # Arizona mostly uses MST.
611 616
612 617 # From Paul Eggert (2002-10-20):
613 618 #
614 619 # The information in the rest of this paragraph is derived from the
615 620 # Daylight Saving Time web page
616 621 # <http://www.dlapr.lib.az.us/links/daylight.htm> (2002-01-23)
617 622 # maintained by the Arizona State Library, Archives and Public Records.
618 623 # Between 1944-01-01 and 1944-04-01 the State of Arizona used standard
619 624 # time, but by federal law railroads, airlines, bus lines, military
620 625 # personnel, and some engaged in interstate commerce continued to
621 626 # observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix
622 627 # Gazette says that was the date the law changed, and that 04-01 was
623 628 # the date the state's clocks would change. In 1945 the State of
624 629 # Arizona used standard time all year, again with exceptions only as
625 630 # mandated by federal law. Arizona observed DST in 1967, but Arizona
626 631 # Laws 1968, ch. 183 (effective 1968-03-21) repealed DST.
627 632 #
628 633 # Shanks says the 1944 experiment came to an end on 1944-03-17.
629 634 # Go with the Arizona State Library instead.
630 635
631 636 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
632 637 Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
633 638 -7:00 US M%sT 1944 Jan 1 0:01
634 639 -7:00 - MST 1944 Apr 1 0:01
635 640 -7:00 US M%sT 1944 Oct 1 0:01
636 641 -7:00 - MST 1967
637 642 -7:00 US M%sT 1968 Mar 21
638 643 -7:00 - MST
639 644 # From Arthur David Olson (1988-02-13):
640 645 # A writer from the Inter Tribal Council of Arizona, Inc.,
641 646 # notes in private correspondence dated 1987-12-28 that "Presently, only the
642 647 # Navajo Nation participates in the Daylight Saving Time policy, due to its
643 648 # large size and location in three states." (The "only" means that other
644 649 # tribal nations don't use DST.)
645 650 #
646 651 # From Paul Eggert (2013-08-26):
647 652 # See America/Denver for a zone appropriate for the Navajo Nation.
648 653
649 654 # Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine,
650 655 # Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark,
651 656 # Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome,
652 657 # Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power,
653 658 # Teton, Twin Falls, Valley, Washington counties, and the southern
654 659 # quarter of Idaho county) and eastern Oregon (most of Malheur County)
655 660 # switched four weeks late in 1974.
656 661 #
657 662 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
658 663 Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11
659 664 -8:00 US P%sT 1923 May 13 2:00
660 665 -7:00 US M%sT 1974
661 666 -7:00 - MST 1974 Feb 3 2:00
662 667 -7:00 US M%sT
663 668
664 669 # Indiana
665 670 #
666 671 # For a map of Indiana's time zone regions, see:
667 672 # http://en.wikipedia.org/wiki/Time_in_Indiana
668 673 #
669 674 # From Paul Eggert (2007-08-17):
670 675 # Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
671 676 # with the following exceptions:
672 677 #
673 678 # - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
674 679 # Vanderburgh, and Warrick counties have been like America/Chicago.
675 680 #
676 681 # - Dearborn and Ohio counties have been like America/New_York.
677 682 #
678 683 # - Clark, Floyd, and Harrison counties have been like
679 684 # America/Kentucky/Louisville.
680 685 #
681 686 # - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke,
682 687 # and Switzerland counties have their own time zone histories as noted below.
683 688 #
684 689 # Shanks partitioned Indiana into 345 regions, each with its own time history,
685 690 # and wrote "Even newspaper reports present contradictory information."
686 691 # Those Hoosiers! Such a flighty and changeable people!
687 692 # Fortunately, most of the complexity occurred before our cutoff date of 1970.
688 693 #
689 694 # Other than Indianapolis, the Indiana place names are so nondescript
690 695 # that they would be ambiguous if we left them at the 'America' level.
691 696 # So we reluctantly put them all in a subdirectory 'America/Indiana'.
692 697
693 698 # From Paul Eggert (2014-06-26):
694 699 # https://www.federalregister.gov/articles/2006/01/20/06-563/standard-time-zone-boundary-in-the-state-of-indiana
695 700 # says "DOT is relocating the time zone boundary in Indiana to move Starke,
696 701 # Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the
697 702 # Eastern Time Zone to the Central Time Zone.... The effective date of
698 703 # this rule is 2 a.m. EST Sunday, April 2, 2006, which is the
699 704 # changeover date from standard time to Daylight Saving Time."
700 705 # Strictly speaking, this meant the affected counties changed their
701 706 # clocks twice that night, but this obviously was in error. The intent
702 707 # was that 01:59:59 EST be followed by 02:00:00 CDT.
703 708
704 709 # From Gwillim Law (2007-02-10):
705 710 # The Associated Press has been reporting that Pulaski County, Indiana is
706 711 # going to switch from Central to Eastern Time on March 11, 2007....
707 712 # http://www.indystar.com/apps/pbcs.dll/article?AID=/20070207/LOCAL190108/702070524/0/LOCAL
708 713
709 714 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
710 715 Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
711 716 Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
712 717 Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
713 718 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
714 719 Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22
715 720 -6:00 US C%sT 1920
716 721 -6:00 Indianapolis C%sT 1942
717 722 -6:00 US C%sT 1946
718 723 -6:00 Indianapolis C%sT 1955 Apr 24 2:00
719 724 -5:00 - EST 1957 Sep 29 2:00
720 725 -6:00 - CST 1958 Apr 27 2:00
721 726 -5:00 - EST 1969
722 727 -5:00 US E%sT 1971
723 728 -5:00 - EST 2006
724 729 -5:00 US E%sT
725 730 #
726 731 # Eastern Crawford County, Indiana, left its clocks alone in 1974,
727 732 # as well as from 1976 through 2005.
728 733 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
729 734 Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
730 735 Rule Marengo 1951 only - Sep lastSun 2:00 0 S
731 736 Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D
732 737 Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S
733 738 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
734 739 Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37
735 740 -6:00 US C%sT 1951
736 741 -6:00 Marengo C%sT 1961 Apr 30 2:00
737 742 -5:00 - EST 1969
738 743 -5:00 US E%sT 1974 Jan 6 2:00
739 744 -6:00 1:00 CDT 1974 Oct 27 2:00
740 745 -5:00 US E%sT 1976
741 746 -5:00 - EST 2006
742 747 -5:00 US E%sT
743 748 #
744 749 # Daviess, Dubois, Knox, and Martin Counties, Indiana,
745 750 # switched from eastern to central time in April 2006, then switched back
746 751 # in November 2007.
747 752 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
748 753 Rule Vincennes 1946 only - Apr lastSun 2:00 1:00 D
749 754 Rule Vincennes 1946 only - Sep lastSun 2:00 0 S
750 755 Rule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D
751 756 Rule Vincennes 1953 1959 - Sep lastSun 2:00 0 S
752 757 Rule Vincennes 1955 only - May 1 0:00 1:00 D
753 758 Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D
754 759 Rule Vincennes 1960 only - Oct lastSun 2:00 0 S
755 760 Rule Vincennes 1961 only - Sep lastSun 2:00 0 S
756 761 Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S
757 762 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
758 763 Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53
759 764 -6:00 US C%sT 1946
760 765 -6:00 Vincennes C%sT 1964 Apr 26 2:00
761 766 -5:00 - EST 1969
762 767 -5:00 US E%sT 1971
763 768 -5:00 - EST 2006 Apr 2 2:00
764 769 -6:00 US C%sT 2007 Nov 4 2:00
765 770 -5:00 US E%sT
766 771 #
767 772 # Perry County, Indiana, switched from eastern to central time in April 2006.
768 773 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
769 774 Rule Perry 1946 only - Apr lastSun 2:00 1:00 D
770 775 Rule Perry 1946 only - Sep lastSun 2:00 0 S
771 776 Rule Perry 1953 1954 - Apr lastSun 2:00 1:00 D
772 777 Rule Perry 1953 1959 - Sep lastSun 2:00 0 S
773 778 Rule Perry 1955 only - May 1 0:00 1:00 D
774 779 Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D
775 780 Rule Perry 1960 only - Oct lastSun 2:00 0 S
776 781 Rule Perry 1961 only - Sep lastSun 2:00 0 S
777 782 Rule Perry 1962 1963 - Oct lastSun 2:00 0 S
778 783 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
779 784 Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57
780 785 -6:00 US C%sT 1946
781 786 -6:00 Perry C%sT 1964 Apr 26 2:00
782 787 -5:00 - EST 1969
783 788 -5:00 US E%sT 1971
784 789 -5:00 - EST 2006 Apr 2 2:00
785 790 -6:00 US C%sT
786 791 #
787 792 # Pike County, Indiana moved from central to eastern time in 1977,
788 793 # then switched back in 2006, then switched back again in 2007.
789 794 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
790 795 Rule Pike 1955 only - May 1 0:00 1:00 D
791 796 Rule Pike 1955 1960 - Sep lastSun 2:00 0 S
792 797 Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D
793 798 Rule Pike 1961 1964 - Oct lastSun 2:00 0 S
794 799 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
795 800 Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53
796 801 -6:00 US C%sT 1955
797 802 -6:00 Pike C%sT 1965 Apr 25 2:00
798 803 -5:00 - EST 1966 Oct 30 2:00
799 804 -6:00 US C%sT 1977 Oct 30 2:00
800 805 -5:00 - EST 2006 Apr 2 2:00
801 806 -6:00 US C%sT 2007 Nov 4 2:00
802 807 -5:00 US E%sT
803 808 #
804 809 # Starke County, Indiana moved from central to eastern time in 1991,
805 810 # then switched back in 2006.
806 811 # From Arthur David Olson (1991-10-28):
807 812 # An article on page A3 of the Sunday, 1991-10-27 Washington Post
808 813 # notes that Starke County switched from Central time to Eastern time as of
809 814 # 1991-10-27.
810 815 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
811 816 Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
812 817 Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
813 818 Rule Starke 1955 1956 - Oct lastSun 2:00 0 S
814 819 Rule Starke 1957 1958 - Sep lastSun 2:00 0 S
815 820 Rule Starke 1959 1961 - Oct lastSun 2:00 0 S
816 821 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
817 822 Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30
818 823 -6:00 US C%sT 1947
819 824 -6:00 Starke C%sT 1962 Apr 29 2:00
820 825 -5:00 - EST 1963 Oct 27 2:00
821 826 -6:00 US C%sT 1991 Oct 27 2:00
822 827 -5:00 - EST 2006 Apr 2 2:00
823 828 -6:00 US C%sT
824 829 #
825 830 # Pulaski County, Indiana, switched from eastern to central time in
826 831 # April 2006 and then switched back in March 2007.
827 832 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
828 833 Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D
829 834 Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S
830 835 Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S
831 836 Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S
832 837 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
833 838 Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35
834 839 -6:00 US C%sT 1946
835 840 -6:00 Pulaski C%sT 1961 Apr 30 2:00
836 841 -5:00 - EST 1969
837 842 -5:00 US E%sT 1971
838 843 -5:00 - EST 2006 Apr 2 2:00
839 844 -6:00 US C%sT 2007 Mar 11 2:00
840 845 -5:00 US E%sT
841 846 #
842 847 # Switzerland County, Indiana, did not observe DST from 1973 through 2005.
843 848 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
844 849 Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44
845 850 -6:00 US C%sT 1954 Apr 25 2:00
846 851 -5:00 - EST 1969
847 852 -5:00 US E%sT 1973
848 853 -5:00 - EST 2006
849 854 -5:00 US E%sT
850 855
851 856 # Part of Kentucky left its clocks alone in 1974.
852 857 # This also includes Clark, Floyd, and Harrison counties in Indiana.
853 858 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
854 859 Rule Louisville 1921 only - May 1 2:00 1:00 D
855 860 Rule Louisville 1921 only - Sep 1 2:00 0 S
856 861 Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
857 862 Rule Louisville 1941 only - Sep lastSun 2:00 0 S
858 863 Rule Louisville 1946 only - Jun 2 2:00 0 S
859 864 Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S
860 865 Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S
861 866 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
862 867 Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58
863 868 -6:00 US C%sT 1921
864 869 -6:00 Louisville C%sT 1942
865 870 -6:00 US C%sT 1946
866 871 -6:00 Louisville C%sT 1961 Jul 23 2:00
867 872 -5:00 - EST 1968
868 873 -5:00 US E%sT 1974 Jan 6 2:00
869 874 -6:00 1:00 CDT 1974 Oct 27 2:00
870 875 -5:00 US E%sT
871 876 #
872 877 # Wayne County, Kentucky
873 878 #
874 879 # From Lake Cumberland LIFE
875 880 # http://www.lake-cumberland.com/life/archive/news990129time.shtml
876 881 # (1999-01-29) via WKYM-101.7:
877 882 # Clinton County has joined Wayne County in asking the DoT to change from
878 883 # the Central to the Eastern time zone.... The Wayne County government made
879 884 # the same request in December. And while Russell County officials have not
880 885 # taken action, the majority of respondents to a poll conducted there in
881 886 # August indicated they would like to change to "fast time" also.
882 887 # The three Lake Cumberland counties are the farthest east of any U.S.
883 888 # location in the Central time zone.
884 889 #
885 890 # From Rich Wales (2000-08-29):
886 891 # After prolonged debate, and despite continuing deep differences of opinion,
887 892 # Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
888 893 # (-0500) time. They won't "fall back" this year. See Sara Shipley,
889 894 # The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
890 895 #
891 896 # From Paul Eggert (2001-07-16):
892 897 # The final rule was published in the
893 898 # Federal Register 65, 160 (2000-08-17), pp 50154-50158.
894 899 # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22
895 900 #
896 901 Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36
897 902 -6:00 US C%sT 1946
898 903 -6:00 - CST 1968
899 904 -6:00 US C%sT 2000 Oct 29 2:00
900 905 -5:00 US E%sT
901 906
902 907
903 908 # From Rives McDow (2000-08-30):
904 909 # Here ... are all the changes in the US since 1985.
905 910 # Kearny County, KS (put all of county on central;
906 911 # previously split between MST and CST) ... 1990-10
907 912 # Starke County, IN (from CST to EST) ... 1991-10
908 913 # Oliver County, ND (from MST to CST) ... 1992-10
909 914 # West Wendover, NV (from PST TO MST) ... 1999-10
910 915 # Wayne County, KY (from CST to EST) ... 2000-10
911 916 #
912 917 # From Paul Eggert (2001-07-17):
913 918 # We don't know where the line used to be within Kearny County, KS,
914 919 # so omit that change for now.
915 920 # See America/Indiana/Knox for the Starke County, IN change.
916 921 # See America/North_Dakota/Center for the Oliver County, ND change.
917 922 # West Wendover, NV officially switched from Pacific to mountain time on
918 923 # 1999-10-31. See the
919 924 # Federal Register 64, 203 (1999-10-21), pp 56705-56707.
920 925 # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15
921 926 # However, the Federal Register says that West Wendover already operated
922 927 # on mountain time, and the rule merely made this official;
923 928 # hence a separate tz entry is not needed.
924 929
925 930 # Michigan
926 931 #
927 932 # From Bob Devine (1988-01-28):
928 933 # Michigan didn't observe DST from 1968 to 1973.
929 934 #
930 935 # From Paul Eggert (1999-03-31):
931 936 # Shanks writes that Michigan started using standard time on 1885-09-18,
932 937 # but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01)
933 938 # that Detroit kept
934 939 #
935 940 # local time until 1900 when the City Council decreed that clocks should
936 941 # be put back twenty-eight minutes to Central Standard Time. Half the
937 942 # city obeyed, half refused. After considerable debate, the decision
938 943 # was rescinded and the city reverted to Sun time. A derisive offer to
939 944 # erect a sundial in front of the city hall was referred to the
940 945 # Committee on Sewers. Then, in 1905, Central time was adopted
941 946 # by city vote.
942 947 #
943 948 # This story is too entertaining to be false, so go with Howse over Shanks.
944 949 #
945 950 # From Paul Eggert (2001-03-06):
946 951 # Garland (1927) writes "Cleveland and Detroit advanced their clocks
947 952 # one hour in 1914." This change is not in Shanks. We have no more
948 953 # info, so omit this for now.
949 954 #
950 955 # Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
951 956 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
952 957 Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
953 958 Rule Detroit 1948 only - Sep lastSun 2:00 0 S
954 959 Rule Detroit 1967 only - Jun 14 2:00 1:00 D
955 960 Rule Detroit 1967 only - Oct lastSun 2:00 0 S
956 961 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
957 962 Zone America/Detroit -5:32:11 - LMT 1905
958 963 -6:00 - CST 1915 May 15 2:00
959 964 -5:00 - EST 1942
960 965 -5:00 US E%sT 1946
961 966 -5:00 Detroit E%sT 1973
962 967 -5:00 US E%sT 1975
963 968 -5:00 - EST 1975 Apr 27 2:00
964 969 -5:00 US E%sT
965 970 #
966 971 # Dickinson, Gogebic, Iron, and Menominee Counties, Michigan,
967 972 # switched from EST to CST/CDT in 1973.
968 973 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
969 974 Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
970 975 Rule Menominee 1946 only - Sep lastSun 2:00 0 S
971 976 Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
972 977 Rule Menominee 1966 only - Oct lastSun 2:00 0 S
973 978 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
974 979 Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
975 980 -6:00 US C%sT 1946
976 981 -6:00 Menominee C%sT 1969 Apr 27 2:00
977 982 -5:00 - EST 1973 Apr 29 2:00
978 983 -6:00 US C%sT
979 984
980 985 # Navassa
981 986 # administered by the US Fish and Wildlife Service
982 987 # claimed by US under the provisions of the 1856 Guano Islands Act
983 988 # also claimed by Haiti
984 989 # occupied 1857/1900 by the Navassa Phosphate Co
985 990 # US lighthouse 1917/1996-09
986 991 # currently uninhabited
987 992 # see Mark Fineman, "An Isle Rich in Guano and Discord",
988 993 # _Los Angeles Times_ (1998-11-10), A1, A10; it cites
989 994 # Jimmy Skaggs, _The Great Guano Rush_ (1994).
990 995
991 996 ################################################################################
992 997
993 998
994 999 # From Paul Eggert (2014-10-31):
995 1000 #
996 1001 # Unless otherwise specified, the source for data through 1990 is:
997 1002 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
998 1003 # San Diego: ACS Publications, Inc. (2003).
999 1004 # Unfortunately this book contains many errors and cites no sources.
1000 1005 #
1001 1006 # Gwillim Law writes that a good source
1002 1007 # for recent time zone data is the International Air Transport
1003 1008 # Association's Standard Schedules Information Manual (IATA SSIM),
1004 1009 # published semiannually. Law sent in several helpful summaries
1005 1010 # of the IATA's data after 1990. Except where otherwise noted,
1006 1011 # IATA SSIM is the source for entries after 1990.
1007 1012 #
1008 1013 # Other sources occasionally used include:
1009 1014 #
1010 1015 # Edward W. Whitman, World Time Differences,
1011 1016 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
1012 1017 # which I found in the UCLA library.
1013 1018 #
1014 1019 # William Willett, The Waste of Daylight, 19th edition
1015 1020 # <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf>
1016 1021 # [PDF] (1914-03)
1017 1022 #
1018 1023 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
1019 1024 # <http://www.jstor.org/stable/1774359>.
1020 1025 #
1021 1026 # See the 'europe' file for Greenland.
1022 1027
1023 1028 # Canada
1024 1029
1025 1030 # From Alain LaBonté (1994-11-14):
1026 1031 # I post here the time zone abbreviations standardized in Canada
1027 1032 # for both English and French in the CAN/CSA-Z234.4-89 standard....
1028 1033 #
1029 1034 # UTC Standard time Daylight saving time
1030 1035 # offset French English French English
1031 1036 # -2:30 - - HAT NDT
1032 1037 # -3 - - HAA ADT
1033 1038 # -3:30 HNT NST - -
1034 1039 # -4 HNA AST HAE EDT
1035 1040 # -5 HNE EST HAC CDT
1036 1041 # -6 HNC CST HAR MDT
1037 1042 # -7 HNR MST HAP PDT
1038 1043 # -8 HNP PST HAY YDT
1039 1044 # -9 HNY YST - -
1040 1045 #
1041 1046 # HN: Heure Normale ST: Standard Time
1042 1047 # HA: Heure Avancée DT: Daylight saving Time
1043 1048 #
1044 1049 # A: de l'Atlantique Atlantic
1045 1050 # C: du Centre Central
1046 1051 # E: de l'Est Eastern
1047 1052 # M: Mountain
1048 1053 # N: Newfoundland
1049 1054 # P: du Pacifique Pacific
1050 1055 # R: des Rocheuses
1051 1056 # T: de Terre-Neuve
1052 1057 # Y: du Yukon Yukon
1053 1058 #
1054 1059 # From Paul Eggert (1994-11-22):
1055 1060 # Alas, this sort of thing must be handled by localization software.
1056 1061
1057 1062 # Unless otherwise specified, the data entries for Canada are all from Shanks
1058 1063 # & Pottenger.
1059 1064
1060 1065 # From Chris Walton (2006-04-01, 2006-04-25, 2006-06-26, 2007-01-31,
1061 1066 # 2007-03-01):
1062 1067 # The British Columbia government announced yesterday that it will
1063 1068 # adjust daylight savings next year to align with changes in the
1064 1069 # U.S. and the rest of Canada....
1065 1070 # http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm
1066 1071 # ...
1067 1072 # Nova Scotia
1068 1073 # Daylight saving time will be extended by four weeks starting in 2007....
1069 1074 # http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf
1070 1075 #
1071 1076 # [For New Brunswick] the new legislation dictates that the time change is to
1072 1077 # be done at 02:00 instead of 00:01.
1073 1078 # http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf
1074 1079 # ...
1075 1080 # Manitoba has traditionally changed the clock every fall at 03:00.
1076 1081 # As of 2006, the transition is to take place one hour earlier at 02:00.
1077 1082 # http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php
1078 1083 # ...
1079 1084 # [Alberta, Ontario, Quebec] will follow US rules.
1080 1085 # http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM
1081 1086 # http://www.e-laws.gov.on.ca/DBLaws/Source/Regs/English/2006/R06111_e.htm
1082 1087 # http://www2.publicationsduquebec.gouv.qc.ca/dynamicSearch/telecharge.php?type=5&file=2006C39A.PDF
1083 1088 # ...
1084 1089 # P.E.I. will follow US rules....
1085 1090 # http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf
1086 1091 # ...
1087 1092 # Province of Newfoundland and Labrador....
1088 1093 # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
1089 1094 # ...
1090 1095 # Yukon
1091 1096 # http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
1092 1097 # ...
1093 1098 # N.W.T. will follow US rules. Whoever maintains the government web site
1094 1099 # does not seem to believe in bookmarks. To see the news release, click the
1095 1100 # following link and search for "Daylight Savings Time Change". Press the
1096 1101 # "Daylight Savings Time Change" link; it will fire off a popup using
1097 1102 # JavaScript.
1098 1103 # http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive
1099 1104 # ...
1100 1105 # Nunavut
1101 1106 # An amendment to the Interpretation Act was registered on February 19/2007....
1102 1107 # http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
1103 1108
1104 1109 # From Paul Eggert (2014-10-18):
1105 1110 # H. David Matthews and Mary Vincent's map
1106 1111 # "It's about TIME", _Canadian Geographic_ (September-October 1998)
1107 1112 # http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp
1108 1113 # contains detailed boundaries for regions observing nonstandard
1109 1114 # time and daylight saving time arrangements in Canada circa 1998.
1110 1115 #
1111 1116 # National Research Council Canada maintains info about time zones and DST.
1112 1117 # http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
1113 1118 # http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
1114 1119 # Its unofficial information is often taken from Matthews and Vincent.
1115 1120
1116 1121 # From Paul Eggert (2006-06-27):
1117 1122 # For now, assume all of DST-observing Canada will fall into line with the
1118 1123 # new US DST rules,
1119 1124
1120 1125 # From Chris Walton (2011-12-01)
1121 1126 # In the first of Tammy Hardwick's articles
1122 1127 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1123 1128 # she quotes the Friday November 1/1918 edition of the Creston Review.
1124 1129 # The quote includes these two statements:
1125 1130 # 'Sunday the CPR went back to the old system of time...'
1126 1131 # '... The daylight saving scheme was dropped all over Canada at the same time,'
1127 1132 # These statements refer to a transition from daylight time to standard time
1128 1133 # that occurred nationally on Sunday October 27/1918. This transition was
1129 1134 # also documented in the Saturday October 26/1918 edition of the Toronto Star.
1130 1135
1131 1136 # In light of that evidence, we alter the date from the earlier believed
1132 1137 # Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
1133 1138 # than Thursday) in all Canadian rulesets.
1134 1139
1135 1140 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1136 1141 Rule Canada 1918 only - Apr 14 2:00 1:00 D
1137 1142 Rule Canada 1918 only - Oct 27 2:00 0 S
1138 1143 Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
1139 1144 Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
1140 1145 Rule Canada 1945 only - Sep 30 2:00 0 S
1141 1146 Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
1142 1147 Rule Canada 1974 2006 - Oct lastSun 2:00 0 S
1143 1148 Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D
1144 1149 Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D
1145 1150 Rule Canada 2007 max - Nov Sun>=1 2:00 0 S
1146 1151
1147 1152
1148 1153 # Newfoundland and Labrador
1149 1154
1150 1155 # From Paul Eggert (2000-10-02):
1151 1156 # Matthews and Vincent (1998) write that Labrador should use NST/NDT,
1152 1157 # but the only part of Labrador that follows the rules is the
1153 1158 # southeast corner, including Port Hope Simpson and Mary's Harbour,
1154 1159 # but excluding, say, Black Tickle.
1155 1160
1156 1161 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1157 1162 Rule StJohns 1917 only - Apr 8 2:00 1:00 D
1158 1163 Rule StJohns 1917 only - Sep 17 2:00 0 S
1159 1164 # Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks & Pottenger.
1160 1165 Rule StJohns 1919 only - May 5 23:00 1:00 D
1161 1166 Rule StJohns 1919 only - Aug 12 23:00 0 S
1162 1167 # For 1931-1935 Whitman gives Apr same date; go with Shanks & Pottenger.
1163 1168 Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D
1164 1169 Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S
1165 1170 # For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks &
1166 1171 # Pottenger.
1167 1172 Rule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D
1168 1173 Rule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S
1169 1174 # Whitman gives the following transitions:
1170 1175 # 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07
1171 1176 # but go with Shanks & Pottenger and assume they used Canadian rules.
1172 1177 # For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives
1173 1178 # Apr 30 - Sep 24; go with Shanks & Pottenger.
1174 1179 Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D
1175 1180 Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S
1176 1181 Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D
1177 1182 Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S
1178 1183 Rule StJohns 1960 1986 - Oct lastSun 2:00 0 S
1179 1184 # From Paul Eggert (2000-10-02):
1180 1185 # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches
1181 1186 # at 00:01 local time. For now, assume it started in 1987.
1182 1187
1183 1188 # From Michael Pelley (2011-09-12):
1184 1189 # We received today, Monday, September 12, 2011, notification that the
1185 1190 # changes to the Newfoundland Standard Time Act have been proclaimed.
1186 1191 # The change in the Act stipulates that the change from Daylight Savings
1187 1192 # Time to Standard Time and from Standard Time to Daylight Savings Time
1188 1193 # now occurs at 2:00AM.
1189 1194 # ...
1190 1195 # http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm
1191 1196 # ...
1192 1197 # MICHAEL PELLEY | Manager of Enterprise Architecture - Solution Delivery
1193 1198 # Office of the Chief Information Officer
1194 1199 # Executive Council
1195 1200 # Government of Newfoundland & Labrador
1196 1201
1197 1202 Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D
1198 1203 Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S
1199 1204 Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD
1200 1205 Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D
1201 1206 Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D
1202 1207 Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S
1203 1208 #
1204 1209 # St John's has an apostrophe, but Posix file names can't have apostrophes.
1205 1210 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1206 1211 Zone America/St_Johns -3:30:52 - LMT 1884
1207 1212 -3:30:52 StJohns N%sT 1918
1208 1213 -3:30:52 Canada N%sT 1919
1209 1214 -3:30:52 StJohns N%sT 1935 Mar 30
1210 1215 -3:30 StJohns N%sT 1942 May 11
1211 1216 -3:30 Canada N%sT 1946
1212 1217 -3:30 StJohns N%sT 2011 Nov
1213 1218 -3:30 Canada N%sT
1214 1219
1215 1220 # most of east Labrador
1216 1221
1217 1222 # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'.
1218 1223 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1219 1224 Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
1220 1225 -3:30:52 - NST 1918
1221 1226 -3:30:52 Canada N%sT 1919
1222 1227 -3:30:52 - NST 1935 Mar 30
|
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673 lines elided |
↑ open up ↑ |
1223 1228 -3:30 - NST 1936
1224 1229 -3:30 StJohns N%sT 1942 May 11
1225 1230 -3:30 Canada N%sT 1946
1226 1231 -3:30 StJohns N%sT 1966 Mar 15 2:00
1227 1232 -4:00 StJohns A%sT 2011 Nov
1228 1233 -4:00 Canada A%sT
1229 1234
1230 1235
1231 1236 # west Labrador, Nova Scotia, Prince Edward I
1232 1237
1233 -# From Paul Eggert (2006-03-22):
1238 +# From Brian Inglis (2015-07-20):
1239 +# From the historical weather station records available at:
1240 +# https://weatherspark.com/history/28351/1971/Sydney-Nova-Scotia-Canada
1241 +# Sydney shares the same time history as Glace Bay, so was
1242 +# likely to be the same across the island....
1243 +# Sydney, as the capital and most populous location, or Cape Breton, would
1244 +# have been better names for the zone had we known this in 1996.
1245 +
1246 +# From Paul Eggert (2015-07-20):
1234 1247 # Shanks & Pottenger write that since 1970 most of this region has been like
1235 1248 # Halifax. Many locales did not observe peacetime DST until 1972;
1236 -# Glace Bay, NS is the largest that we know of.
1249 +# the Cape Breton area, represented by Glace Bay, is the largest we know of
1250 +# (Glace Bay was perhaps not the best name choice but no point changing now).
1237 1251 # Shanks & Pottenger also write that Liverpool, NS was the only town
1238 1252 # in Canada to observe DST in 1971 but not 1970; for now we'll assume
1239 1253 # this is a typo.
1240 1254
1241 1255 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1242 1256 Rule Halifax 1916 only - Apr 1 0:00 1:00 D
1243 1257 Rule Halifax 1916 only - Oct 1 0:00 0 S
1244 1258 Rule Halifax 1920 only - May 9 0:00 1:00 D
1245 1259 Rule Halifax 1920 only - Aug 29 0:00 0 S
1246 1260 Rule Halifax 1921 only - May 6 0:00 1:00 D
1247 1261 Rule Halifax 1921 1922 - Sep 5 0:00 0 S
1248 1262 Rule Halifax 1922 only - Apr 30 0:00 1:00 D
1249 1263 Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
1250 1264 Rule Halifax 1923 only - Sep 4 0:00 0 S
1251 1265 Rule Halifax 1924 only - Sep 15 0:00 0 S
1252 1266 Rule Halifax 1925 only - Sep 28 0:00 0 S
1253 1267 Rule Halifax 1926 only - May 16 0:00 1:00 D
1254 1268 Rule Halifax 1926 only - Sep 13 0:00 0 S
1255 1269 Rule Halifax 1927 only - May 1 0:00 1:00 D
1256 1270 Rule Halifax 1927 only - Sep 26 0:00 0 S
1257 1271 Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
1258 1272 Rule Halifax 1928 only - Sep 9 0:00 0 S
1259 1273 Rule Halifax 1929 only - Sep 3 0:00 0 S
1260 1274 Rule Halifax 1930 only - Sep 15 0:00 0 S
1261 1275 Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S
1262 1276 Rule Halifax 1932 only - May 1 0:00 1:00 D
1263 1277 Rule Halifax 1933 only - Apr 30 0:00 1:00 D
1264 1278 Rule Halifax 1933 only - Oct 2 0:00 0 S
1265 1279 Rule Halifax 1934 only - May 20 0:00 1:00 D
1266 1280 Rule Halifax 1934 only - Sep 16 0:00 0 S
1267 1281 Rule Halifax 1935 only - Jun 2 0:00 1:00 D
1268 1282 Rule Halifax 1935 only - Sep 30 0:00 0 S
1269 1283 Rule Halifax 1936 only - Jun 1 0:00 1:00 D
1270 1284 Rule Halifax 1936 only - Sep 14 0:00 0 S
1271 1285 Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D
1272 1286 Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S
1273 1287 Rule Halifax 1939 only - May 28 0:00 1:00 D
1274 1288 Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D
1275 1289 Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D
1276 1290 Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S
1277 1291 Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D
1278 1292 Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S
1279 1293 Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D
1280 1294 Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S
1281 1295 Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D
1282 1296 Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S
1283 1297 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1284 1298 Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
1285 1299 -4:00 Halifax A%sT 1918
1286 1300 -4:00 Canada A%sT 1919
1287 1301 -4:00 Halifax A%sT 1942 Feb 9 2:00s
1288 1302 -4:00 Canada A%sT 1946
1289 1303 -4:00 Halifax A%sT 1974
1290 1304 -4:00 Canada A%sT
1291 1305 Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
1292 1306 -4:00 Canada A%sT 1953
1293 1307 -4:00 Halifax A%sT 1954
1294 1308 -4:00 - AST 1972
1295 1309 -4:00 Halifax A%sT 1974
1296 1310 -4:00 Canada A%sT
1297 1311
1298 1312 # New Brunswick
1299 1313
1300 1314 # From Paul Eggert (2007-01-31):
1301 1315 # The Time Definition Act <http://www.gnb.ca/0062/PDF-acts/t-06.pdf>
1302 1316 # says they changed at 00:01 through 2006, and
1303 1317 # <http://www.canlii.org/nb/laws/sta/t-6/20030127/whole.html> makes it
1304 1318 # clear that this was the case since at least 1993.
1305 1319 # For now, assume it started in 1993.
1306 1320
1307 1321 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1308 1322 Rule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D
1309 1323 Rule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S
1310 1324 Rule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D
1311 1325 Rule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S
1312 1326 Rule Moncton 1939 only - May 27 1:00 1:00 D
1313 1327 Rule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S
1314 1328 Rule Moncton 1940 only - May 19 1:00 1:00 D
1315 1329 Rule Moncton 1941 only - May 4 1:00 1:00 D
1316 1330 Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D
1317 1331 Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
1318 1332 Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
1319 1333 Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
1320 1334 Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
1321 1335 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1322 1336 Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
1323 1337 -5:00 - EST 1902 Jun 15
|
↓ open down ↓ |
77 lines elided |
↑ open up ↑ |
1324 1338 -4:00 Canada A%sT 1933
1325 1339 -4:00 Moncton A%sT 1942
1326 1340 -4:00 Canada A%sT 1946
1327 1341 -4:00 Moncton A%sT 1973
1328 1342 -4:00 Canada A%sT 1993
1329 1343 -4:00 Moncton A%sT 2007
1330 1344 -4:00 Canada A%sT
1331 1345
1332 1346 # Quebec
1333 1347
1334 -# From Paul Eggert (2013-08-30):
1335 -# Since 1970 most of Quebec has been like Toronto.
1336 -# However, because earlier versions of the tz database mistakenly relied on data
1337 -# from Shanks & Pottenger saying that Quebec differed from Ontario after 1970,
1338 -# a separate entry was created for most of Quebec. We're loath to lose
1339 -# its pre-1970 info, even though the tz database is normally limited to
1340 -# zones that differ after 1970, so keep this otherwise out-of-scope entry.
1341 -
1348 +# From Paul Eggert (2015-03-24):
1349 +# See America/Toronto for most of Quebec, including Montreal.
1350 +#
1342 1351 # Matthews and Vincent (1998) also write that Quebec east of the -63
1343 1352 # meridian is supposed to observe AST, but residents as far east as
1344 1353 # Natashquan use EST/EDT, and residents east of Natashquan use AST.
1345 1354 # The Quebec department of justice writes in
1346 1355 # "The situation in Minganie and Basse-Côte-Nord"
1347 1356 # http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm
1348 1357 # that the coastal strip from just east of Natashquan to Blanc-Sablon
1349 1358 # observes Atlantic standard time all year round.
1350 1359 # http://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en
1351 1360 # says this common practice was codified into law as of 2007.
1352 1361 # For lack of better info, guess this practice began around 1970, contra to
1353 1362 # Shanks & Pottenger who have this region observing AST/ADT.
1354 1363
1355 -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1356 -Rule Mont 1917 only - Mar 25 2:00 1:00 D
1357 -Rule Mont 1917 only - Apr 24 0:00 0 S
1358 -Rule Mont 1919 only - Mar 31 2:30 1:00 D
1359 -Rule Mont 1919 only - Oct 25 2:30 0 S
1360 -Rule Mont 1920 only - May 2 2:30 1:00 D
1361 -Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S
1362 -Rule Mont 1921 only - May 1 2:00 1:00 D
1363 -Rule Mont 1922 only - Apr 30 2:00 1:00 D
1364 -Rule Mont 1924 only - May 17 2:00 1:00 D
1365 -Rule Mont 1924 1926 - Sep lastSun 2:30 0 S
1366 -Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D
1367 -Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D
1368 -Rule Mont 1927 1937 - Sep lastSat 24:00 0 S
1369 -Rule Mont 1938 1940 - Apr lastSun 0:00 1:00 D
1370 -Rule Mont 1938 1939 - Sep lastSun 0:00 0 S
1371 -Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D
1372 -Rule Mont 1945 1948 - Sep lastSun 2:00 0 S
1373 -Rule Mont 1949 1950 - Oct lastSun 2:00 0 S
1374 -Rule Mont 1951 1956 - Sep lastSun 2:00 0 S
1375 -Rule Mont 1957 1973 - Oct lastSun 2:00 0 S
1376 -
1377 1364 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1378 1365 Zone America/Blanc-Sablon -3:48:28 - LMT 1884
1379 1366 -4:00 Canada A%sT 1970
1380 1367 -4:00 - AST
1381 -Zone America/Montreal -4:54:16 - LMT 1884
1382 - -5:00 Mont E%sT 1918
1383 - -5:00 Canada E%sT 1919
1384 - -5:00 Mont E%sT 1942 Feb 9 2:00s
1385 - -5:00 Canada E%sT 1946
1386 - -5:00 Mont E%sT 1974
1387 - -5:00 Canada E%sT
1388 1368
1389 1369 # Ontario
1390 1370
1391 1371 # From Paul Eggert (2006-07-09):
1392 1372 # Shanks & Pottenger write that since 1970 most of Ontario has been like
1393 1373 # Toronto.
1394 1374 # Thunder Bay skipped DST in 1973.
1395 1375 # Many smaller locales did not observe peacetime DST until 1974;
1396 1376 # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1397 1377 # Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
1398 1378
1399 1379 # From Mark Brader (2003-07-26):
1400 1380 # [According to the Toronto Star] Orillia, Ontario, adopted DST
1401 1381 # effective Saturday, 1912-06-22, 22:00; the article mentions that
1402 1382 # Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
1403 1383 # have already done so. In Orillia DST was to run until Saturday,
1404 1384 # 1912-08-31 (no time mentioned), but it was met with considerable
1405 1385 # hostility from certain segments of the public, and was revoked after
1406 1386 # only two weeks - I copied it as Saturday, 1912-07-07, 22:00, but
1407 1387 # presumably that should be -07-06. (1912-06-19, -07-12; also letters
1408 1388 # earlier in June).
1409 1389 #
1410 1390 # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
1411 1391
1412 1392 # From Paul Eggert (1997-10-17):
1413 1393 # Mark Brader writes that an article in the 1997-10-14 Toronto Star
1414 1394 # says that Atikokan, Ontario currently does not observe DST,
1415 1395 # but will vote on 11-10 whether to use EST/EDT.
1416 1396 # He also writes that the Ontario Time Act (1990, Chapter T.9)
1417 1397 # http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html
1418 1398 # says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
1419 1399 # Officially Atikokan is therefore on CST/CDT, and most likely this report
1420 1400 # concerns a non-official time observed as a matter of local practice.
1421 1401 #
1422 1402 # From Paul Eggert (2000-10-02):
1423 1403 # Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and
1424 1404 # New Osnaburgh observe CST all year, that Big Trout Lake observes
1425 1405 # CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in
1426 1406 # violation of the official Ontario rules.
1427 1407 #
1428 1408 # From Paul Eggert (2006-07-09):
1429 1409 # Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the
1430 1410 # 2005-07-21 Chronicle-Journal, which said:
1431 1411 #
1432 1412 # The clocks in Atikokan stay set on standard time year-round.
1433 1413 # This means they spend about half the time on central time and
1434 1414 # the other half on eastern time.
1435 1415 #
1436 1416 # For the most part, the system works, Mayor Dennis Brown said.
1437 1417 #
1438 1418 # "The majority of businesses in Atikokan deal more with Eastern
1439 1419 # Canada, but there are some that deal with Western Canada," he
1440 1420 # said. "I don't see any changes happening here."
1441 1421 #
1442 1422 # Walton also writes "Supposedly Pickle Lake and Mishkeegogamang
1443 1423 # [New Osnaburgh] follow the same practice."
1444 1424
1445 1425 # From Garry McKinnon (2006-07-14) via Chris Walton:
1446 1426 # I chatted with a member of my board who has an outstanding memory
1447 1427 # and a long history in Atikokan (and in the telecom industry) and he
1448 1428 # can say for certain that Atikokan has been practicing the current
1449 1429 # time keeping since 1952, at least.
1450 1430
1451 1431 # From Paul Eggert (2006-07-17):
1452 1432 # Shanks & Pottenger say that Atikokan has agreed with Rainy River
1453 1433 # ever since standard time was introduced, but the information from
1454 1434 # McKinnon sounds more authoritative. For now, assume that Atikokan
1455 1435 # switched to EST immediately after WWII era daylight saving time
1456 1436 # ended. This matches the old (less-populous) America/Coral_Harbour
1457 1437 # entry since our cutoff date of 1970, so we can move
1458 1438 # America/Coral_Harbour to the 'backward' file.
1459 1439
1460 1440 # From Mark Brader (2010-03-06):
1461 1441 #
1462 1442 # Currently the database has:
1463 1443 #
1464 1444 # # Ontario
1465 1445 #
1466 1446 # # From Paul Eggert (2006-07-09):
1467 1447 # # Shanks & Pottenger write that since 1970 most of Ontario has been like
1468 1448 # # Toronto.
1469 1449 # # Thunder Bay skipped DST in 1973.
1470 1450 # # Many smaller locales did not observe peacetime DST until 1974;
1471 1451 # # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1472 1452 #
1473 1453 # In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom
1474 1454 # right corner of page 1, it says that Toronto will return to standard
1475 1455 # time at 2 am Sunday morning (which agrees with the database), and that:
1476 1456 #
1477 1457 # The one-hour setback will go into effect throughout most of Ontario,
1478 1458 # except in areas like Windsor which remains on standard time all year.
1479 1459 #
1480 1460 # Windsor is, of course, a lot larger than Nipigon.
1481 1461 #
1482 1462 # I only came across this incidentally. I don't know if Windsor began
1483 1463 # observing DST when Detroit did, or in 1974, or on some other date.
1484 1464 #
1485 1465 # By the way, the article continues by noting that:
1486 1466 #
1487 1467 # Some cities in the United States have pushed the deadline back
1488 1468 # three weeks and will change over from daylight saving in October.
1489 1469
1490 1470 # From Arthur David Olson (2010-07-17):
1491 1471 #
1492 1472 # "Standard Time and Time Zones in Canada" appeared in
1493 1473 # The Journal of The Royal Astronomical Society of Canada,
1494 1474 # volume 26, number 2 (February 1932) and, as of 2010-07-17,
1495 1475 # was available at
1496 1476 # http://adsabs.harvard.edu/full/1932JRASC..26...49S
1497 1477 #
1498 1478 # It includes the text below (starting on page 57):
1499 1479 #
1500 1480 # A list of the places in Canada using daylight saving time would
1501 1481 # require yearly revision. From information kindly furnished by
1502 1482 # the provincial governments and by the postmasters in many cities
1503 1483 # and towns, it is found that the following places used daylight sav-
1504 1484 # ing in 1930. The information for the province of Quebec is definite,
1505 1485 # for the other provinces only approximate:
1506 1486 #
1507 1487 # Province Daylight saving time used
1508 1488 # Prince Edward Island Not used.
1509 1489 # Nova Scotia In Halifax only.
1510 1490 # New Brunswick In St. John only.
1511 1491 # Quebec In the following places:
1512 1492 # Montreal Lachine
1513 1493 # Quebec Mont-Royal
1514 1494 # Lévis Iberville
1515 1495 # St. Lambert Cap de la Madelèine
1516 1496 # Verdun Loretteville
1517 1497 # Westmount Richmond
1518 1498 # Outremont St. Jérôme
1519 1499 # Longueuil Greenfield Park
1520 1500 # Arvida Waterloo
1521 1501 # Chambly-Canton Beaulieu
1522 1502 # Melbourne La Tuque
1523 1503 # St. Théophile Buckingham
1524 1504 # Ontario Used generally in the cities and towns along
1525 1505 # the southerly part of the province. Not
1526 1506 # used in the northwesterly part.
1527 1507 # Manitoba Not used.
1528 1508 # Saskatchewan In Regina only.
1529 1509 # Alberta Not used.
1530 1510 # British Columbia Not used.
1531 1511 #
1532 1512 # With some exceptions, the use of daylight saving may be said to be limited
1533 1513 # to those cities and towns lying between Quebec city and Windsor, Ont.
1534 1514
1535 1515 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1536 1516 Rule Toronto 1919 only - Mar 30 23:30 1:00 D
1537 1517 Rule Toronto 1919 only - Oct 26 0:00 0 S
1538 1518 Rule Toronto 1920 only - May 2 2:00 1:00 D
1539 1519 Rule Toronto 1920 only - Sep 26 0:00 0 S
1540 1520 Rule Toronto 1921 only - May 15 2:00 1:00 D
1541 1521 Rule Toronto 1921 only - Sep 15 2:00 0 S
1542 1522 Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D
1543 1523 # Shanks & Pottenger say 1923-09-19; assume it's a typo and that "-16"
1544 1524 # was meant.
1545 1525 Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S
1546 1526 Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D
1547 1527 # The 1927-to-1939 rules can be expressed more simply as
1548 1528 # Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S
1549 1529 # Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D
1550 1530 # Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D
1551 1531 # Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S
1552 1532 # The rules below avoid use of Sun>=25
1553 1533 # (which pre-2004 versions of zic cannot handle).
1554 1534 Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S
1555 1535 Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D
1556 1536 Rule Toronto 1932 only - May 1 2:00 1:00 D
1557 1537 Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D
1558 1538 Rule Toronto 1933 only - Oct 1 2:00 0 S
1559 1539 Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S
1560 1540 Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S
1561 1541 Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D
1562 1542 Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D
1563 1543 Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S
1564 1544 Rule Toronto 1949 only - Nov lastSun 0:00 0 S
1565 1545 Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D
1566 1546 Rule Toronto 1950 only - Nov lastSun 2:00 0 S
1567 1547 Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S
1568 1548 # Shanks & Pottenger say Toronto ended DST a week early in 1971,
1569 1549 # namely on 1971-10-24, but Mark Brader wrote (2003-05-31) that this
1570 1550 # is wrong, and that he had confirmed it by checking the 1971-10-30
1571 1551 # Toronto Star, which said that DST was ending 1971-10-31 as usual.
1572 1552 Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
1573 1553
1574 1554 # From Paul Eggert (2003-07-27):
1575 1555 # Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
1576 1556 # Port Arthur, Ontario, the principle of the Bill has been in
1577 1557 # operation for the past three years, and in the City of Moose Jaw,
1578 1558 # Saskatchewan, for one year."
1579 1559
1580 1560 # From David Bryan via Tory Tronrud, Director/Curator,
1581 1561 # Thunder Bay Museum (2003-11-12):
1582 1562 # There is some suggestion, however, that, by-law or not, daylight
1583 1563 # savings time was being practiced in Fort William and Port Arthur
1584 1564 # before 1909.... [I]n 1910, the line between the Eastern and Central
1585 1565 # Time Zones was permanently moved about two hundred miles west to
1586 1566 # include the Thunder Bay area.... When Canada adopted daylight
1587 1567 # savings time in 1916, Fort William and Port Arthur, having done so
1588 1568 # already, did not change their clocks.... During the Second World
1589 1569 # War,... [t]he cities agreed to implement DST during the summer
1590 1570 # months for the remainder of the war years.
1591 1571
1592 1572 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1593 1573 Zone America/Toronto -5:17:32 - LMT 1895
1594 1574 -5:00 Canada E%sT 1919
1595 1575 -5:00 Toronto E%sT 1942 Feb 9 2:00s
1596 1576 -5:00 Canada E%sT 1946
1597 1577 -5:00 Toronto E%sT 1974
1598 1578 -5:00 Canada E%sT
1599 1579 Zone America/Thunder_Bay -5:57:00 - LMT 1895
1600 1580 -6:00 - CST 1910
1601 1581 -5:00 - EST 1942
1602 1582 -5:00 Canada E%sT 1970
1603 1583 -5:00 Toronto E%sT 1973
1604 1584 -5:00 - EST 1974
1605 1585 -5:00 Canada E%sT
1606 1586 Zone America/Nipigon -5:53:04 - LMT 1895
1607 1587 -5:00 Canada E%sT 1940 Sep 29
1608 1588 -5:00 1:00 EDT 1942 Feb 9 2:00s
1609 1589 -5:00 Canada E%sT
1610 1590 Zone America/Rainy_River -6:18:16 - LMT 1895
1611 1591 -6:00 Canada C%sT 1940 Sep 29
1612 1592 -6:00 1:00 CDT 1942 Feb 9 2:00s
1613 1593 -6:00 Canada C%sT
1614 1594 Zone America/Atikokan -6:06:28 - LMT 1895
1615 1595 -6:00 Canada C%sT 1940 Sep 29
1616 1596 -6:00 1:00 CDT 1942 Feb 9 2:00s
1617 1597 -6:00 Canada C%sT 1945 Sep 30 2:00
1618 1598 -5:00 - EST
1619 1599
1620 1600
1621 1601 # Manitoba
1622 1602
1623 1603 # From Rob Douglas (2006-04-06):
1624 1604 # the old Manitoba Time Act - as amended by Bill 2, assented to
1625 1605 # March 27, 1987 ... said ...
1626 1606 # "between two o'clock Central Standard Time in the morning of
1627 1607 # the first Sunday of April of each year and two o'clock Central
1628 1608 # Standard Time in the morning of the last Sunday of October next
1629 1609 # following, one hour in advance of Central Standard Time."...
1630 1610 # I believe that the English legislation [of the old time act] had
1631 1611 # been assented to (March 22, 1967)....
1632 1612 # Also, as far as I can tell, there was no order-in-council varying
1633 1613 # the time of Daylight Saving Time for 2005 and so the provisions of
1634 1614 # the 1987 version would apply - the changeover was at 2:00 Central
1635 1615 # Standard Time (i.e. not until 3:00 Central Daylight Time).
1636 1616
1637 1617 # From Paul Eggert (2006-04-10):
1638 1618 # Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s)
1639 1619 # starting 1966. Since 02:00s is clearly correct for 1967 on, assume
1640 1620 # it was also 02:00s in 1966.
1641 1621
1642 1622 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1643 1623 Rule Winn 1916 only - Apr 23 0:00 1:00 D
1644 1624 Rule Winn 1916 only - Sep 17 0:00 0 S
1645 1625 Rule Winn 1918 only - Apr 14 2:00 1:00 D
1646 1626 Rule Winn 1918 only - Oct 27 2:00 0 S
1647 1627 Rule Winn 1937 only - May 16 2:00 1:00 D
1648 1628 Rule Winn 1937 only - Sep 26 2:00 0 S
1649 1629 Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
1650 1630 Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
1651 1631 Rule Winn 1945 only - Sep lastSun 2:00 0 S
1652 1632 Rule Winn 1946 only - May 12 2:00 1:00 D
1653 1633 Rule Winn 1946 only - Oct 13 2:00 0 S
1654 1634 Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D
1655 1635 Rule Winn 1947 1949 - Sep lastSun 2:00 0 S
1656 1636 Rule Winn 1950 only - May 1 2:00 1:00 D
1657 1637 Rule Winn 1950 only - Sep 30 2:00 0 S
1658 1638 Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D
1659 1639 Rule Winn 1951 1958 - Sep lastSun 2:00 0 S
1660 1640 Rule Winn 1959 only - Oct lastSun 2:00 0 S
1661 1641 Rule Winn 1960 only - Sep lastSun 2:00 0 S
1662 1642 Rule Winn 1963 only - Apr lastSun 2:00 1:00 D
1663 1643 Rule Winn 1963 only - Sep 22 2:00 0 S
1664 1644 Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D
1665 1645 Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S
1666 1646 Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D
1667 1647 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1668 1648 Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
1669 1649 -6:00 Winn C%sT 2006
1670 1650 -6:00 Canada C%sT
1671 1651
1672 1652
1673 1653 # Saskatchewan
1674 1654
1675 1655 # From Mark Brader (2003-07-26):
1676 1656 # The first actual adoption of DST in Canada was at the municipal
1677 1657 # level. As the [Toronto] Star put it (1912-06-07), "While people
1678 1658 # elsewhere have long been talking of legislation to save daylight,
1679 1659 # the city of Moose Jaw [Saskatchewan] has acted on its own hook."
1680 1660 # DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned:
1681 1661 # presumably late evening, as below), and would run until "the end of
1682 1662 # the summer". The discrepancy between municipal time and railroad
1683 1663 # time was noted.
1684 1664
1685 1665 # From Paul Eggert (2003-07-27):
1686 1666 # Willett (1914-03) notes that DST "has been in operation ... in the
1687 1667 # City of Moose Jaw, Saskatchewan, for one year."
1688 1668
1689 1669 # From Paul Eggert (2006-03-22):
1690 1670 # Shanks & Pottenger say that since 1970 this region has mostly been as Regina.
1691 1671 # Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
1692 1672 # Other western towns (e.g. Lloydminster) are like Edmonton.
1693 1673 # Matthews and Vincent (1998) write that Denare Beach and Creighton
1694 1674 # are like Winnipeg, in violation of Saskatchewan law.
1695 1675
1696 1676 # From W. Jones (1992-11-06):
1697 1677 # The. . .below is based on information I got from our law library, the
1698 1678 # provincial archives, and the provincial Community Services department.
1699 1679 # A precise history would require digging through newspaper archives, and
1700 1680 # since you didn't say what you wanted, I didn't bother.
1701 1681 #
1702 1682 # Saskatchewan is split by a time zone meridian (105W) and over the years
1703 1683 # the boundary became pretty ragged as communities near it reevaluated
1704 1684 # their affiliations in one direction or the other. In 1965 a provincial
1705 1685 # referendum favoured legislating common time practices.
1706 1686 #
1707 1687 # On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
1708 1688 # Saskatchewan 1978) was proclaimed, and established that the eastern
1709 1689 # part of Saskatchewan would use CST year round, that districts in
1710 1690 # northwest Saskatchewan would by default follow CST but could opt to
1711 1691 # follow Mountain Time rules (thus 1 hour difference in the winter and
1712 1692 # zero in the summer), and that districts in southwest Saskatchewan would
1713 1693 # by default follow MT but could opt to follow CST.
1714 1694 #
1715 1695 # It took a few years for the dust to settle (I know one story of a town
1716 1696 # on one time zone having its school in another, such that a mom had to
1717 1697 # serve her family lunch in two shifts), but presently it seems that only
1718 1698 # a few towns on the border with Alberta (e.g. Lloydminster) follow MT
1719 1699 # rules any more; all other districts appear to have used CST year round
1720 1700 # since sometime in the 1960s.
1721 1701
1722 1702 # From Chris Walton (2006-06-26):
1723 1703 # The Saskatchewan time act which was last updated in 1996 is about 30 pages
1724 1704 # long and rather painful to read.
1725 1705 # http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf
1726 1706
1727 1707 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1728 1708 Rule Regina 1918 only - Apr 14 2:00 1:00 D
1729 1709 Rule Regina 1918 only - Oct 27 2:00 0 S
1730 1710 Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
1731 1711 Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
1732 1712 Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
1733 1713 Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
1734 1714 Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
1735 1715 Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
1736 1716 Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
1737 1717 Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace
1738 1718 Rule Regina 1945 only - Sep lastSun 2:00 0 S
1739 1719 Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
1740 1720 Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
1741 1721 Rule Regina 1947 1957 - Apr lastSun 2:00 1:00 D
1742 1722 Rule Regina 1947 1957 - Sep lastSun 2:00 0 S
1743 1723 Rule Regina 1959 only - Apr lastSun 2:00 1:00 D
1744 1724 Rule Regina 1959 only - Oct lastSun 2:00 0 S
1745 1725 #
1746 1726 Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
1747 1727 Rule Swift 1957 only - Oct lastSun 2:00 0 S
1748 1728 Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
1749 1729 Rule Swift 1959 only - Oct lastSun 2:00 0 S
1750 1730 Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
1751 1731 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1752 1732 Zone America/Regina -6:58:36 - LMT 1905 Sep
1753 1733 -7:00 Regina M%sT 1960 Apr lastSun 2:00
1754 1734 -6:00 - CST
1755 1735 Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
1756 1736 -7:00 Canada M%sT 1946 Apr lastSun 2:00
1757 1737 -7:00 Regina M%sT 1950
1758 1738 -7:00 Swift M%sT 1972 Apr lastSun 2:00
1759 1739 -6:00 - CST
1760 1740
1761 1741
1762 1742 # Alberta
1763 1743
1764 1744 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1765 1745 Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
1766 1746 Rule Edm 1918 only - Oct 27 2:00 0 S
1767 1747 Rule Edm 1919 only - May 27 2:00 0 S
1768 1748 Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
1769 1749 Rule Edm 1920 only - Oct lastSun 2:00 0 S
1770 1750 Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
1771 1751 Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
1772 1752 Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
1773 1753 Rule Edm 1945 only - Sep lastSun 2:00 0 S
1774 1754 Rule Edm 1947 only - Apr lastSun 2:00 1:00 D
1775 1755 Rule Edm 1947 only - Sep lastSun 2:00 0 S
1776 1756 Rule Edm 1967 only - Apr lastSun 2:00 1:00 D
1777 1757 Rule Edm 1967 only - Oct lastSun 2:00 0 S
1778 1758 Rule Edm 1969 only - Apr lastSun 2:00 1:00 D
1779 1759 Rule Edm 1969 only - Oct lastSun 2:00 0 S
1780 1760 Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
1781 1761 Rule Edm 1972 2006 - Oct lastSun 2:00 0 S
1782 1762 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1783 1763 Zone America/Edmonton -7:33:52 - LMT 1906 Sep
1784 1764 -7:00 Edm M%sT 1987
1785 1765 -7:00 Canada M%sT
1786 1766
1787 1767
1788 1768 # British Columbia
1789 1769
1790 1770 # From Paul Eggert (2006-03-22):
1791 1771 # Shanks & Pottenger write that since 1970 most of this region has
1792 1772 # been like Vancouver.
1793 1773 # Dawson Creek uses MST. Much of east BC is like Edmonton.
1794 1774 # Matthews and Vincent (1998) write that Creston is like Dawson Creek.
1795 1775
1796 1776 # It seems though that (re: Creston) is not entirely correct:
1797 1777
1798 1778 # From Chris Walton (2011-12-01):
1799 1779 # There are two areas within the Canadian province of British Columbia
1800 1780 # that do not currently observe daylight saving:
1801 1781 # a) The Creston Valley (includes the town of Creston and surrounding area)
1802 1782 # b) The eastern half of the Peace River Regional District
1803 1783 # (includes the cities of Dawson Creek and Fort St. John)
1804 1784
1805 1785 # Earlier this year I stumbled across a detailed article about the time
1806 1786 # keeping history of Creston; it was written by Tammy Hardwick who is the
1807 1787 # manager of the Creston & District Museum. The article was written in May 2009.
1808 1788 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1809 1789 # According to the article, Creston has not changed its clocks since June 1918.
1810 1790 # i.e. Creston has been stuck on UTC-7 for 93 years.
1811 1791 # Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
1812 1792
1813 1793 # Unfortunately the exact date for the time change in June 1918 remains
1814 1794 # unknown and will be difficult to ascertain. I e-mailed Tammy a few months
1815 1795 # ago to ask if Sunday June 2 was a reasonable guess. She said it was just
1816 1796 # as plausible as any other date (in June). She also said that after writing
1817 1797 # the article she had discovered another time change in 1916; this is the
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1818 1798 # subject of another article which she wrote in October 2010.
1819 1799 # http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56
1820 1800
1821 1801 # Here is a summary of the three clock change events in Creston's history:
1822 1802 # 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7)
1823 1803 # Exact date unknown
1824 1804 # 2. Oct 1916: switch to Pacific Standard Time (GMT-8)
1825 1805 # Exact date in October unknown; Sunday October 1 is a reasonable guess.
1826 1806 # 3. June 1918: switch to Pacific Daylight Time (GMT-7)
1827 1807 # Exact date in June unknown; Sunday June 2 is a reasonable guess.
1828 -# note#1:
1808 +# note 1:
1829 1809 # On Oct 27/1918 when daylight saving ended in the rest of Canada,
1830 1810 # Creston did not change its clocks.
1831 -# note#2:
1811 +# note 2:
1832 1812 # During WWII when the Federal Government legislated a mandatory clock change,
1833 1813 # Creston did not oblige.
1834 -# note#3:
1814 +# note 3:
1835 1815 # There is no guarantee that Creston will remain on Mountain Standard Time
1836 1816 # (UTC-7) forever.
1837 1817 # The subject was debated at least once this year by the town Council.
1838 1818 # http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html
1839 1819
1840 1820 # During a period WWII, summer time (Daylight saying) was mandatory in Canada.
1841 1821 # In Creston, that was handled by shifting the area to PST (-8:00) then applying
1842 1822 # summer time to cause the offset to be -7:00, the same as it had been before
1843 1823 # the change. It can be argued that the timezone abbreviation during this
1844 1824 # period should be PDT rather than MST, but that doesn't seem important enough
1845 1825 # (to anyone) to further complicate the rules.
1846 1826
1847 1827 # The transition dates (and times) are guesses.
1848 1828
1829 +# From Matt Johnson (2015-09-21):
1830 +# Fort Nelson, BC, Canada will cancel DST this year. So while previously they
1831 +# were aligned with America/Vancouver, they're now aligned with
1832 +# America/Dawson_Creek.
1833 +# http://www.northernrockies.ca/EN/meta/news/archives/2015/northern-rockies-time-change.html
1834 +#
1835 +# From Tim Parenti (2015-09-23):
1836 +# This requires a new zone for the Northern Rockies Regional Municipality,
1837 +# America/Fort_Nelson. The resolution of 2014-12-08 was reached following a
1838 +# 2014-11-15 poll with nearly 75% support. Effectively, the municipality has
1839 +# been on MST (-0700) like Dawson Creek since it advanced its clocks on
1840 +# 2015-03-08.
1841 +#
1842 +# From Paul Eggert (2015-09-23):
1843 +# Shanks says Fort Nelson did not observe DST in 1946, unlike Vancouver.
1844 +
1849 1845 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1850 1846 Rule Vanc 1918 only - Apr 14 2:00 1:00 D
1851 1847 Rule Vanc 1918 only - Oct 27 2:00 0 S
1852 1848 Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
1853 1849 Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
1854 1850 Rule Vanc 1945 only - Sep 30 2:00 0 S
1855 1851 Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
1856 1852 Rule Vanc 1946 only - Oct 13 2:00 0 S
1857 1853 Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
1858 1854 Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
1859 1855 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1860 1856 Zone America/Vancouver -8:12:28 - LMT 1884
1861 1857 -8:00 Vanc P%sT 1987
1862 1858 -8:00 Canada P%sT
1863 1859 Zone America/Dawson_Creek -8:00:56 - LMT 1884
1864 1860 -8:00 Canada P%sT 1947
1865 1861 -8:00 Vanc P%sT 1972 Aug 30 2:00
1866 1862 -7:00 - MST
1863 +Zone America/Fort_Nelson -8:10:47 - LMT 1884
1864 + -8:00 Vanc P%sT 1946
1865 + -8:00 - PST 1947
1866 + -8:00 Vanc P%sT 1987
1867 + -8:00 Canada P%sT 2015 Mar 8 2:00
1868 + -7:00 - MST
1867 1869 Zone America/Creston -7:46:04 - LMT 1884
1868 1870 -7:00 - MST 1916 Oct 1
1869 1871 -8:00 - PST 1918 Jun 2
1870 1872 -7:00 - MST
1871 1873
1872 1874 # Northwest Territories, Nunavut, Yukon
1873 1875
1874 1876 # From Paul Eggert (2006-03-22):
1875 1877 # Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
1876 1878 # Mathew Englander (1996-10-07) gives the following refs:
1877 1879 # * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
1878 -# c. 7 defines Yukon standard time as UTC-9. This is still valid;
1880 +# c. 7 defines Yukon standard time as UTC-9....
1879 1881 # see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).
1882 +# [http://canlii.ca/t/7vhg]
1880 1883 # * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00.
1881 1884 # * O.I.C. 1980/02 established DST.
1882 1885 # * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
1883 -# Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go
1884 -# with Englander.
1885 -# From Chris Walton (2006-06-26):
1886 -# Here is a link to the old daylight saving portion of the interpretation
1887 -# act which was last updated in 1987:
1888 -# http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf
1889 1886
1887 +# From Brian Inglis (2015-04-14):
1888 +#
1889 +# I tried to trace the history of Yukon time and found the following
1890 +# regulations, giving the reference title and URL if found, regulation name,
1891 +# and relevant quote if available. Each regulation specifically revokes its
1892 +# predecessor. The final reference is to the current Interpretation Act
1893 +# authorizing and resulting from these regulatory changes.
1894 +#
1895 +# Only recent regulations were retrievable via Yukon government site search or
1896 +# index, and only some via Canadian legal sources. Other sources used include
1897 +# articles titled "Standard Time and Time Zones in Canada" from JRASC via ADS
1898 +# Abstracts, cited by ADO for 1932 ..., and updated versions from 1958 and
1899 +# 1970 quoted below; each article includes current extracts from provincial
1900 +# and territorial ST and DST regulations at the end, summaries and details of
1901 +# standard times and daylight saving time at many locations across Canada,
1902 +# with time zone maps, tables and calculations for Canadian Sunrise, Sunset,
1903 +# and LMST; they also cover many countries and global locations, with a chart
1904 +# and table showing current Universal Time offsets, and may be useful as
1905 +# another source of information for 1970 and earlier.
1906 +#
1907 +# * Standard Time and Time Zones in Canada; Smith, C.C.; JRASC, Vol. 26,
1908 +# pp.49-77; February 1932; SAO/NASA Astrophysics Data System (ADS)
1909 +# http://adsabs.harvard.edu/abs/1932JRASC..26...49S from p.75:
1910 +# Yukon Interpretation Ordinance
1911 +# Yukon standard time is the local mean time at the one hundred and
1912 +# thirty-fifth meridian.
1913 +#
1914 +# * Standard Time and Time Zones in Canada; Smith, C.C.; Thomson, Malcolm M.;
1915 +# JRASC, Vol. 52, pp.193-223; October 1958; SAO/NASA Astrophysics Data System
1916 +# (ADS) http://adsabs.harvard.edu/abs/1958JRASC..52..193S from pp.220-1:
1917 +# Yukon Interpretation Ordinance, 1955, Chap. 16.
1918 +#
1919 +# (1) Subject to this section, standard time shall be reckoned as nine
1920 +# hours behind Greenwich Time and called Yukon Standard Time.
1921 +#
1922 +# (2) Notwithstanding subsection (1), the Commissioner may make regulations
1923 +# varying the manner of reckoning standard time.
1924 +#
1925 +# * Yukon Territory Commissioner's Order 1966-20 Interpretation Ordinance
1926 +# http://? - no online source found
1927 +#
1928 +# * Standard Time and Time Zones in Canada; Thomson, Malcolm M.; JRASC,
1929 +# Vol. 64, pp.129-162; June 1970; SAO/NASA Astrophysics Data System (ADS)
1930 +# http://adsabs.harvard.edu/abs/1970JRASC..64..129T from p.156: Yukon
1931 +# Territory Commissioner's Order 1967-59 Interpretation Ordinance ...
1932 +#
1933 +# 1. Commissioner's Order 1966-20 dated at Whitehorse in the Yukon
1934 +# Territory on 27th January, 1966, is hereby revoked.
1935 +#
1936 +# 2. Yukon (East) Standard Time as defined by section 36 of the
1937 +# Interpretation Ordinance from and after mid-night on the 28th day of May,
1938 +# 1967 shall be reckoned in the same manner as Pacific Standard Time, that
1939 +# is to say, eight hours behind Greenwich Time in the area of the Yukon
1940 +# Territory lying east of the 138th degree longitude west.
1941 +#
1942 +# 3. In the remainder of the Territory, lying west of the 138th degree
1943 +# longitude west, Yukon (West) Standard Time shall be reckoned as nine
1944 +# hours behind Greenwich Time.
1945 +#
1946 +# * Yukon Standard Time defined as Pacific Standard Time, YCO 1973/214
1947 +# http://www.canlii.org/en/yk/laws/regu/yco-1973-214/latest/yco-1973-214.html
1948 +# C.O. 1973/214 INTERPRETATION ACT ...
1949 +#
1950 +# 1. Effective October 28, 1973 Commissioner's Order 1967/59 is hereby
1951 +# revoked.
1952 +#
1953 +# 2. Yukon Standard Time as defined by section 36 of the Interpretation
1954 +# Act from and after midnight on the twenty-eighth day of October, 1973
1955 +# shall be reckoned in the same manner as Pacific Standard Time, that is
1956 +# to say eight hours behind Greenwich Time.
1957 +#
1958 +# * O.I.C. 1980/02 INTERPRETATION ACT
1959 +# http://? - no online source found
1960 +#
1961 +# * Yukon Daylight Saving Time, YOIC 1987/56
1962 +# http://www.canlii.org/en/yk/laws/regu/yoic-1987-56/latest/yoic-1987-56.html
1963 +# O.I.C. 1987/056 INTERPRETATION ACT ...
1964 +#
1965 +# In every year between
1966 +# (a) two o'clock in the morning in the first Sunday in April, and
1967 +# (b) two o'clock in the morning in the last Sunday in October,
1968 +# Standard Time shall be reckoned as seven hours behind Greenwich Time and
1969 +# called Yukon Daylight Saving Time.
1970 +# ...
1971 +# Dated ... 9th day of March, A.D., 1987.
1972 +#
1973 +# * Yukon Daylight Saving Time 2006, YOIC 2006/127
1974 +# http://www.canlii.org/en/yk/laws/regu/yoic-2006-127/latest/yoic-2006-127.html
1975 +# O.I.C. 2006/127 INTERPRETATION ACT ...
1976 +#
1977 +# 1. In Yukon each year the time for general purposes shall be 7 hours
1978 +# behind Greenwich mean time during the period commencing at two o'clock
1979 +# in the forenoon on the second Sunday of March and ending at two o'clock
1980 +# in the forenoon on the first Sunday of November and shall be called
1981 +# Yukon Daylight Saving Time.
1982 +#
1983 +# 2. Order-in-Council 1987/56 is revoked.
1984 +#
1985 +# 3. This order comes into force January 1, 2007.
1986 +#
1987 +# * Interpretation Act, RSY 2002, c 125
1988 +# http://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html
1989 +
1890 1990 # From Rives McDow (1999-09-04):
1891 1991 # Nunavut ... moved ... to incorporate the whole territory into one time zone.
1892 1992 # Nunavut moves to single time zone Oct. 31
1893 1993 # http://www.nunatsiaq.com/nunavut/nvt90903_13.html
1894 1994 #
1895 1995 # From Antoine Leca (1999-09-06):
1896 1996 # We then need to create a new timezone for the Kitikmeot region of Nunavut
1897 1997 # to differentiate it from the Yellowknife region.
1898 1998
1899 1999 # From Paul Eggert (1999-09-20):
1900 2000 # Basic Facts: The New Territory
1901 2001 # http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html
1902 2002 # (1999) reports that Pangnirtung operates on eastern time,
1903 2003 # and that Coral Harbour does not observe DST. We don't know when
1904 2004 # Pangnirtung switched to eastern time; we'll guess 1995.
1905 2005
1906 2006 # From Rives McDow (1999-11-08):
1907 2007 # On October 31, when the rest of Nunavut went to Central time,
1908 2008 # Pangnirtung wobbled. Here is the result of their wobble:
1909 2009 #
1910 2010 # The following businesses and organizations in Pangnirtung use Central Time:
1911 2011 #
1912 2012 # First Air, Power Corp, Nunavut Construction, Health Center, RCMP,
1913 2013 # Eastern Arctic National Parks, A & D Specialist
1914 2014 #
1915 2015 # The following businesses and organizations in Pangnirtung use Eastern Time:
1916 2016 #
1917 2017 # Hamlet office, All other businesses, Both schools, Airport operator
1918 2018 #
1919 2019 # This has made for an interesting situation there, which warranted the news.
1920 2020 # No one there that I spoke with seems concerned, or has plans to
1921 2021 # change the local methods of keeping time, as it evidently does not
1922 2022 # really interfere with any activities or make things difficult locally.
1923 2023 # They plan to celebrate New Year's turn-over twice, one hour apart,
1924 2024 # so it appears that the situation will last at least that long.
1925 2025 # The Nunavut Intergovernmental Affairs hopes that they will "come to
1926 2026 # their senses", but the locals evidently don't see any problem with
1927 2027 # the current state of affairs.
1928 2028
1929 2029 # From Michaela Rodrigue, writing in the
1930 2030 # Nunatsiaq News (1999-11-19):
1931 2031 # http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html
1932 2032 # Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
1933 2033 # central - or Nunavut time - for government offices, and eastern time
1934 2034 # for municipal offices and schools.... Igloolik [was similar but then]
1935 2035 # made the switch to central time on Saturday, Nov. 6.
1936 2036
1937 2037 # From Paul Eggert (2000-10-02):
1938 2038 # Matthews and Vincent (1998) say the following, but we lack histories
1939 2039 # for these potential new Zones.
1940 2040 #
1941 2041 # The Canadian Forces station at Alert uses Eastern Time while the
1942 2042 # handful of residents at the Eureka weather station [in the Central
1943 2043 # zone] skip daylight savings. Baffin Island, which is crossed by the
1944 2044 # Central, Eastern and Atlantic Time zones only uses Eastern Time.
1945 2045 # Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of
1946 2046 # Central Time and Southampton Island [in the Central zone] is not
1947 2047 # required to use daylight savings.
1948 2048
1949 2049 # From <http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html>
1950 2050 # Nunavut now has two time zones (2000-11-10):
1951 2051 # The Nunavut government would allow its employees in Kugluktuk and
1952 2052 # Cambridge Bay to operate on central time year-round, putting them
1953 2053 # one hour behind the rest of Nunavut for six months during the winter.
1954 2054 # At the end of October the two communities had rebelled against
1955 2055 # Nunavut's unified time zone, refusing to shift to eastern time with
1956 2056 # the rest of the territory for the winter. Cambridge Bay remained on
1957 2057 # central time, while Kugluktuk, even farther west, reverted to
1958 2058 # mountain time, which they had used before the advent of Nunavut's
1959 2059 # unified time zone in 1999.
1960 2060 #
1961 2061 # From Rives McDow (2001-01-20), quoting the Nunavut government:
1962 2062 # The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
1963 2063
1964 2064 # From Paul Eggert (2000-12-04):
1965 2065 # Let's just keep track of the official times for now.
1966 2066
1967 2067 # From Rives McDow (2001-03-07):
1968 2068 # The premier of Nunavut has issued a ministerial statement advising
1969 2069 # that effective 2001-04-01, the territory of Nunavut will revert
1970 2070 # back to three time zones (mountain, central, and eastern). Of the
1971 2071 # cities in Nunavut, Coral Harbor is the only one that I know of that
1972 2072 # has said it will not observe dst, staying on EST year round. I'm
1973 2073 # checking for more info, and will get back to you if I come up with
1974 2074 # more.
1975 2075 # [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
1976 2076
1977 2077 # From Gwillim Law (2005-05-21):
1978 2078 # According to ...
1979 2079 # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
1980 2080 # (from a 1998 Canadian Geographic article), the de facto and de jure time
1981 2081 # for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
1982 2082 # round. Using Google, it's easy to find other websites that confirm this.
1983 2083 # I wasn't able to find how far back this time regimen goes, but since it
1984 2084 # predates the creation of Nunavut, it probably goes back many years....
1985 2085 # The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
1986 2086 #
1987 2087 # From Paul Eggert (2014-10-17):
1988 2088 # For lack of better information, assume that Southampton Island observed
1989 2089 # daylight saving only during wartime. Gwillim Law's email also
1990 2090 # mentioned maps now maintained by National Research Council Canada;
1991 2091 # see above for an up-to-date link.
1992 2092
1993 2093 # From Chris Walton (2007-03-01):
1994 2094 # ... the community of Resolute (located on Cornwallis Island in
1995 2095 # Nunavut) moved from Central Time to Eastern Time last November.
1996 2096 # Basically the community did not change its clocks at the end of
1997 2097 # daylight saving....
1998 2098 # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html
1999 2099
2000 2100 # From Chris Walton (2011-03-21):
2001 2101 # Back in 2007 I initiated the creation of a new "zone file" for Resolute
2002 2102 # Bay. Resolute Bay is a small community located about 900km north of
2003 2103 # the Arctic Circle. The zone file was required because Resolute Bay had
2004 2104 # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007.
2005 2105 #
2006 2106 # According to new information which I received last week, Resolute Bay
2007 2107 # went back to using UTC-6 in the winter of 2007-2008...
2008 2108 #
2009 2109 # On March 11/2007 most of Canada went onto daylight saving. On March
2010 2110 # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I
2011 2111 # talked to somebody that was both knowledgeable and helpful. I was able
2012 2112 # to confirm that Resolute Bay was still operating on UTC-5. It was
2013 2113 # explained to me that Resolute Bay had been on the Eastern Time zone
2014 2114 # (EST) in the winter, and was now back on the Central Time zone (CDT).
2015 2115 # i.e. the time zone had changed twice in the last year but the clocks
2016 2116 # had not moved. The residents had to know which time zone they were in
2017 2117 # so they could follow the correct TV schedule...
2018 2118 #
2019 2119 # On Nov 02/2008 most of Canada went onto standard time. On Nov 03/2008 I
2020 2120 # phoned the Resolute Bay hamlet office...[D]ue to the challenging nature
2021 2121 # of the phone call, I decided to seek out an alternate source of
2022 2122 # information. I found an e-mail address for somebody by the name of
2023 2123 # Stephanie Adams whose job was listed as "Inns North Support Officer for
2024 2124 # Arctic Co-operatives." I was under the impression that Stephanie lived
2025 2125 # and worked in Resolute Bay...
2026 2126 #
2027 2127 # On March 14/2011 I phoned the hamlet office again. I was told that
2028 2128 # Resolute Bay had been using Central Standard Time over the winter of
2029 2129 # 2010-2011 and that the clocks had therefore been moved one hour ahead
2030 2130 # on March 13/2011. The person I talked to was aware that Resolute Bay
2031 2131 # had previously experimented with Eastern Standard Time but he could not
2032 2132 # tell me when the practice had stopped.
2033 2133 #
2034 2134 # On March 17/2011 I searched the Web to find an e-mail address of
2035 2135 # somebody that might be able to tell me exactly when Resolute Bay went
2036 2136 # off Eastern Standard Time. I stumbled on the name "Aziz Kheraj." Aziz
2037 2137 # used to be the mayor of Resolute Bay and he apparently owns half the
2038 2138 # businesses including "South Camp Inn." This website has some info on
2039 2139 # Aziz:
2040 2140 # http://www.uphere.ca/node/493
2041 2141 #
2042 2142 # I sent Aziz an e-mail asking when Resolute Bay had stopped using
2043 2143 # Eastern Standard Time.
2044 2144 #
2045 2145 # Aziz responded quickly with this: "hi, The time was not changed for the
2046 2146 # 1 year only, the following year, the community went back to the old way
2047 2147 # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in
2048 2148 # the winter Zulu plus 6 hrs"
2049 2149 #
2050 2150 # This of course conflicted with everything I had ascertained in November 2008.
2051 2151 #
2052 2152 # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz
2053 2153 # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You
2054 2154 # may want to check with the weather office in Resolute Bay or do a
2055 2155 # search on the weather through Env. Canada. web site"
2056 2156 #
2057 2157 # If I had realized the Stephanie did not live in Resolute Bay I would
2058 2158 # never have contacted her. I now believe that all the information I
2059 2159 # obtained in November 2008 should be ignored...
2060 2160 # I apologize for reporting incorrect information in 2008.
2061 2161
2062 2162 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2063 2163 Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
2064 2164 Rule NT_YK 1918 only - Oct 27 2:00 0 S
2065 2165 Rule NT_YK 1919 only - May 25 2:00 1:00 D
2066 2166 Rule NT_YK 1919 only - Nov 1 0:00 0 S
2067 2167 Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
2068 2168 Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
2069 2169 Rule NT_YK 1945 only - Sep 30 2:00 0 S
2070 2170 Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
2071 2171 Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
2072 2172 Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
2073 2173 Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
2074 2174 Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
2075 2175 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2076 2176 # aka Panniqtuuq
2077 2177 Zone America/Pangnirtung 0 - zzz 1921 # trading post est.
2078 2178 -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
2079 2179 -5:00 Canada E%sT 1999 Oct 31 2:00
2080 2180 -6:00 Canada C%sT 2000 Oct 29 2:00
2081 2181 -5:00 Canada E%sT
2082 2182 # formerly Frobisher Bay
2083 2183 Zone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est.
2084 2184 -5:00 NT_YK E%sT 1999 Oct 31 2:00
2085 2185 -6:00 Canada C%sT 2000 Oct 29 2:00
2086 2186 -5:00 Canada E%sT
2087 2187 # aka Qausuittuq
2088 2188 Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded
2089 2189 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2090 2190 -5:00 - EST 2001 Apr 1 3:00
2091 2191 -6:00 Canada C%sT 2006 Oct 29 2:00
2092 2192 -5:00 - EST 2007 Mar 11 3:00
2093 2193 -6:00 Canada C%sT
2094 2194 # aka Kangiqiniq
2095 2195 Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded
2096 2196 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2097 2197 -5:00 - EST 2001 Apr 1 3:00
2098 2198 -6:00 Canada C%sT
2099 2199 # aka Iqaluktuuttiaq
2100 2200 Zone America/Cambridge_Bay 0 - zzz 1920 # trading post est.?
2101 2201 -7:00 NT_YK M%sT 1999 Oct 31 2:00
2102 2202 -6:00 Canada C%sT 2000 Oct 29 2:00
2103 2203 -5:00 - EST 2000 Nov 5 0:00
|
↓ open down ↓ |
204 lines elided |
↑ open up ↑ |
2104 2204 -6:00 - CST 2001 Apr 1 3:00
2105 2205 -7:00 Canada M%sT
2106 2206 Zone America/Yellowknife 0 - zzz 1935 # Yellowknife founded?
2107 2207 -7:00 NT_YK M%sT 1980
2108 2208 -7:00 Canada M%sT
2109 2209 Zone America/Inuvik 0 - zzz 1953 # Inuvik founded
2110 2210 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
2111 2211 -7:00 NT_YK M%sT 1980
2112 2212 -7:00 Canada M%sT
2113 2213 Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
2114 - -9:00 NT_YK Y%sT 1966 Jul 1 2:00
2214 + -9:00 NT_YK Y%sT 1967 May 28 0:00
2115 2215 -8:00 NT_YK P%sT 1980
2116 2216 -8:00 Canada P%sT
2117 2217 Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
2118 2218 -9:00 NT_YK Y%sT 1973 Oct 28 0:00
2119 2219 -8:00 NT_YK P%sT 1980
2120 2220 -8:00 Canada P%sT
2121 2221
2122 2222
2123 2223 ###############################################################################
2124 2224
2125 2225 # Mexico
2126 2226
2127 2227 # From Paul Eggert (2014-12-07):
2128 2228 # The Investigation and Analysis Service of the
2129 2229 # Mexican Library of Congress (MLoC) has published a
2130 2230 # history of Mexican local time (in Spanish)
2131 2231 # http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
2132 2232 #
2133 2233 # Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2134 2234 # (In all cases we go with the MLoC.)
2135 2235 # S&P report that Baja was at -8:00 in 1922/1923.
2136 2236 # S&P say the 1930 transition in Baja was 1930-11-16.
2137 2237 # S&P report no DST during summer 1931.
2138 2238 # S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2139 2239
2140 2240 # From Gwillim Law (2001-02-20):
2141 2241 # There are some other discrepancies between the Decrees page and the
2142 2242 # tz database. I think they can best be explained by supposing that
2143 2243 # the researchers who prepared the Decrees page failed to find some of
2144 2244 # the relevant documents.
2145 2245
2146 2246 # From Alan Perry (1996-02-15):
2147 2247 # A guy from our Mexico subsidiary finally found the Presidential Decree
2148 2248 # outlining the timezone changes in Mexico.
2149 2249 #
2150 2250 # ------------- Begin Forwarded Message -------------
2151 2251 #
2152 2252 # I finally got my hands on the Official Presidential Decree that sets up the
2153 2253 # rules for the DST changes. The rules are:
2154 2254 #
2155 2255 # 1. The country is divided in 3 timezones:
2156 2256 # - Baja California Norte (the Mexico/BajaNorte TZ)
2157 2257 # - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ)
2158 2258 # - The rest of the country (the Mexico/General TZ)
2159 2259 #
2160 2260 # 2. From the first Sunday in April at 2:00 AM to the last Sunday in October
2161 2261 # at 2:00 AM, the times in each zone are as follows:
2162 2262 # BajaNorte: GMT+7
2163 2263 # BajaSur: GMT+6
2164 2264 # General: GMT+5
2165 2265 #
2166 2266 # 3. The rest of the year, the times are as follows:
2167 2267 # BajaNorte: GMT+8
2168 2268 # BajaSur: GMT+7
2169 2269 # General: GMT+6
2170 2270 #
2171 2271 # The Decree was published in Mexico's Official Newspaper on January 4th.
2172 2272 #
2173 2273 # -------------- End Forwarded Message --------------
2174 2274 # From Paul Eggert (1996-06-12):
2175 2275 # For an English translation of the decree, see
2176 2276 # "Diario Oficial: Time Zone Changeover" (1996-01-04).
2177 2277 # http://mexico-travel.com/extra/timezone_eng.html
2178 2278
2179 2279 # From Rives McDow (1998-10-08):
2180 2280 # The State of Quintana Roo has reverted back to central STD and DST times
2181 2281 # (i.e. UTC -0600 and -0500 as of 1998-08-02).
2182 2282
2183 2283 # From Rives McDow (2000-01-10):
2184 2284 # Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time
2185 2285 # zone 5 hours from the International Date Line, and will not observe daylight
2186 2286 # savings time so as to stay on the same time zone as the southern part of
2187 2287 # Arizona year round.
2188 2288
2189 2289 # From Jesper Nørgaard, translating
2190 2290 # <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17):
2191 2291 # In Oaxaca, the 55.000 teachers from the Section 22 of the National
2192 2292 # Syndicate of Education Workers, refuse to apply daylight saving each
2193 2293 # year, so that the more than 10,000 schools work at normal hour the
2194 2294 # whole year.
2195 2295
2196 2296 # From Gwillim Law (2001-01-19):
2197 2297 # <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says
2198 2298 # (translated):...
2199 2299 # January 17, 2000 - The Energy Secretary, Ernesto Martens, announced
2200 2300 # that Summer Time will be reduced from seven to five months, starting
2201 2301 # this year....
2202 2302 # http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001
2203 2303 # [translated], says "summer time will ... take effect on the first Sunday
2204 2304 # in May, and end on the last Sunday of September.
2205 2305
2206 2306 # From Arthur David Olson (2001-01-25):
2207 2307 # The 2001-01-24 traditional Washington Post contained the page one
2208 2308 # story "Timely Issue Divides Mexicans."...
2209 2309 # http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html
2210 2310 # ... Mexico City Mayor López Obrador "...is threatening to keep
2211 2311 # Mexico City and its 20 million residents on a different time than
2212 2312 # the rest of the country..." In particular, López Obrador would abolish
2213 2313 # observation of Daylight Saving Time.
2214 2314
2215 2315 # Official statute published by the Energy Department
2216 2316 # http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre
2217 2317 # (2001-02-01) shows Baja and Chihauhua as still using US DST rules,
2218 2318 # and Sonora with no DST. This was reported by Jesper Nørgaard (2001-02-03).
2219 2319
2220 2320 # From Paul Eggert (2001-03-03):
2221 2321 #
2222 2322 # http://www.latimes.com/news/nation/20010303/t000018766.html
2223 2323 # James F. Smith writes in today's LA Times
2224 2324 # * Sonora will continue to observe standard time.
2225 2325 # * Last week Mexico City's mayor Andrés Manuel López Obrador decreed that
2226 2326 # the Federal District will not adopt DST.
2227 2327 # * 4 of 16 district leaders announced they'll ignore the decree.
2228 2328 # * The decree does not affect federal-controlled facilities including
2229 2329 # the airport, banks, hospitals, and schools.
2230 2330 #
2231 2331 # For now we'll assume that the Federal District will bow to federal rules.
2232 2332
2233 2333 # From Jesper Nørgaard (2001-04-01):
2234 2334 # I found some references to the Mexican application of daylight
2235 2335 # saving, which modifies what I had already sent you, stating earlier
2236 2336 # that a number of northern Mexican states would go on daylight
2237 2337 # saving. The modification reverts this to only cover Baja California
2238 2338 # (Norte), while all other states (except Sonora, who has no daylight
2239 2339 # saving all year) will follow the original decree of president
2240 2340 # Vicente Fox, starting daylight saving May 6, 2001 and ending
2241 2341 # September 30, 2001.
2242 2342 # References: "Diario de Monterrey" <http://www.diariodemonterrey.com/index.asp>
2243 2343 # Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
2244 2344
2245 2345 # From Reuters (2001-09-04):
2246 2346 # Mexico's Supreme Court on Tuesday declared that daylight savings was
2247 2347 # unconstitutional in Mexico City, creating the possibility the
2248 2348 # capital will be in a different time zone from the rest of the nation
2249 2349 # next year.... The Supreme Court's ruling takes effect at 2:00
2250 2350 # a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to
2251 2351 # standard time. "This is so residents of the Federal District are not
2252 2352 # subject to unexpected time changes," a statement from the court said.
2253 2353
2254 2354 # From Jesper Nørgaard Welen (2002-03-12):
2255 2355 # ... consulting my local grocery store(!) and my coworkers, they all insisted
2256 2356 # that a new decision had been made to reinstate US style DST in Mexico....
2257 2357 # http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20)
2258 2358 # confirms this. Sonora as usual is the only state where DST is not applied.
2259 2359
2260 2360 # From Steffen Thorsen (2009-12-28):
2261 2361 #
2262 2362 # Steffen Thorsen wrote:
2263 2363 # > Mexico's House of Representatives has approved a proposal for northern
2264 2364 # > Mexico's border cities to share the same daylight saving schedule as
2265 2365 # > the United States.
2266 2366 # Now this has passed both the Congress and the Senate, so starting from
2267 2367 # 2010, some border regions will be the same:
2268 2368 # http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides-border/
2269 2369 # http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario_de_frontera_con_eu/621939
2270 2370 # (Spanish)
2271 2371 #
2272 2372 # Could not find the new law text, but the proposed law text changes are here:
2273 2373 # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf
2274 2374 # (Gaceta Parlamentaria)
2275 2375 #
2276 2376 # There is also a list of the votes here:
2277 2377 # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html
2278 2378 #
2279 2379 # Our page:
2280 2380 # http://www.timeanddate.com/news/time/north-mexico-dst-change.html
2281 2381
2282 2382 # From Arthur David Olson (2010-01-20):
2283 2383 # The page
2284 2384 # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010
2285 2385 # includes this text:
2286 2386 # En los municipios fronterizos de Tijuana y Mexicali en Baja California;
2287 2387 # Juárez y Ojinaga en Chihuahua; Acuña y Piedras Negras en Coahuila;
2288 2388 # Anáhuac en Nuevo León; y Nuevo Laredo, Reynosa y Matamoros en
2289 2389 # Tamaulipas, la aplicación de este horario estacional surtirá efecto
2290 2390 # desde las dos horas del segundo domingo de marzo y concluirá a las dos
2291 2391 # horas del primer domingo de noviembre.
2292 2392 # En los municipios fronterizos que se encuentren ubicados en la franja
2293 2393 # fronteriza norte en el territorio comprendido entre la línea
2294 2394 # internacional y la línea paralela ubicada a una distancia de veinte
2295 2395 # kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el
2296 2396 # interior del país, la aplicación de este horario estacional surtirá
2297 2397 # efecto desde las dos horas del segundo domingo de marzo y concluirá a
2298 2398 # las dos horas del primer domingo de noviembre.
2299 2399
2300 2400 # From Steffen Thorsen (2014-12-08), translated by Gwillim Law:
2301 2401 # The Mexican state of Quintana Roo will likely change to EST in 2015.
2302 2402 #
2303 2403 # http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo
2304 2404 # "With this change, the time conflict that has existed between the municipios
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2305 2405 # of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an
2306 2406 # end. The latter declared itself in rebellion 15 years ago when a time change
2307 2407 # was initiated in Mexico, and since then it has refused to change its time
2308 2408 # zone along with the rest of the country."
2309 2409 #
2310 2410 # From Steffen Thorsen (2015-01-14), translated by Gwillim Law:
2311 2411 # http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html
2312 2412 # "...the new time zone will come into effect at two o'clock on the first Sunday
2313 2413 # of February, when we will have to advance the clock one hour from its current
2314 2414 # time..."
2315 -#
2316 2415 # Also, the new zone will not use DST.
2416 +#
2417 +# From Carlos Raúl Perasso (2015-02-02):
2418 +# The decree that modifies the Mexican Hour System Law has finally
2419 +# been published at the Diario Oficial de la Federación
2420 +# http://www.dof.gob.mx/nota_detalle.php?codigo=5380123&fecha=31/01/2015
2421 +# It establishes 5 zones for Mexico:
2422 +# 1- Zona Centro (Central Zone): Corresponds to longitude 90 W,
2423 +# includes most of Mexico, excluding what's mentioned below.
2424 +# 2- Zona Pacífico (Pacific Zone): Longitude 105 W, includes the
2425 +# states of Baja California Sur; Chihuahua; Nayarit (excluding Bahía
2426 +# de Banderas which lies in Central Zone); Sinaloa and Sonora.
2427 +# 3- Zona Noroeste (Northwest Zone): Longitude 120 W, includes the
2428 +# state of Baja California.
2429 +# 4- Zona Sureste (Southeast Zone): Longitude 75 W, includes the state
2430 +# of Quintana Roo.
2431 +# 5- The islands, reefs and keys shall take their timezone from the
2432 +# longitude they are located at.
2317 2433
2318 2434 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2319 2435 Rule Mexico 1939 only - Feb 5 0:00 1:00 D
2320 2436 Rule Mexico 1939 only - Jun 25 0:00 0 S
2321 2437 Rule Mexico 1940 only - Dec 9 0:00 1:00 D
2322 2438 Rule Mexico 1941 only - Apr 1 0:00 0 S
2323 2439 Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
2324 2440 Rule Mexico 1944 only - May 1 0:00 0 S
2325 2441 Rule Mexico 1950 only - Feb 12 0:00 1:00 D
2326 2442 Rule Mexico 1950 only - Jul 30 0:00 0 S
2327 2443 Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
2328 2444 Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
2329 2445 Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
2330 2446 Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2331 2447 Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2332 2448 Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2333 2449 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2334 2450 # Quintana Roo; represented by Cancún
2335 2451 Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2336 2452 -6:00 - CST 1981 Dec 23
2337 2453 -5:00 Mexico E%sT 1998 Aug 2 2:00
2338 2454 -6:00 Mexico C%sT 2015 Feb 1 2:00
2339 2455 -5:00 - EST
2340 2456 # Campeche, Yucatán; represented by Mérida
2341 2457 Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2342 2458 -6:00 - CST 1981 Dec 23
2343 2459 -5:00 - EST 1982 Dec 2
2344 2460 -6:00 Mexico C%sT
2345 2461 # Coahuila, Durango, Nuevo León, Tamaulipas (near US border)
2346 2462 Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2347 2463 -6:00 - CST 1988
2348 2464 -6:00 US C%sT 1989
2349 2465 -6:00 Mexico C%sT 2010
2350 2466 -6:00 US C%sT
2351 2467 # Coahuila, Durango, Nuevo León, Tamaulipas (away from US border)
2352 2468 Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
2353 2469 -6:00 - CST 1988
2354 2470 -6:00 US C%sT 1989
2355 2471 -6:00 Mexico C%sT
2356 2472 # Central Mexico
2357 2473 Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
2358 2474 -7:00 - MST 1927 Jun 10 23:00
2359 2475 -6:00 - CST 1930 Nov 15
2360 2476 -7:00 - MST 1931 May 1 23:00
2361 2477 -6:00 - CST 1931 Oct
2362 2478 -7:00 - MST 1932 Apr 1
2363 2479 -6:00 Mexico C%sT 2001 Sep 30 2:00
2364 2480 -6:00 - CST 2002 Feb 20
2365 2481 -6:00 Mexico C%sT
2366 2482 # Chihuahua (near US border)
2367 2483 Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20
2368 2484 -7:00 - MST 1927 Jun 10 23:00
2369 2485 -6:00 - CST 1930 Nov 15
2370 2486 -7:00 - MST 1931 May 1 23:00
2371 2487 -6:00 - CST 1931 Oct
2372 2488 -7:00 - MST 1932 Apr 1
2373 2489 -6:00 - CST 1996
2374 2490 -6:00 Mexico C%sT 1998
2375 2491 -6:00 - CST 1998 Apr Sun>=1 3:00
2376 2492 -7:00 Mexico M%sT 2010
2377 2493 -7:00 US M%sT
2378 2494 # Chihuahua (away from US border)
2379 2495 Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
2380 2496 -7:00 - MST 1927 Jun 10 23:00
2381 2497 -6:00 - CST 1930 Nov 15
2382 2498 -7:00 - MST 1931 May 1 23:00
2383 2499 -6:00 - CST 1931 Oct
2384 2500 -7:00 - MST 1932 Apr 1
2385 2501 -6:00 - CST 1996
2386 2502 -6:00 Mexico C%sT 1998
2387 2503 -6:00 - CST 1998 Apr Sun>=1 3:00
2388 2504 -7:00 Mexico M%sT
2389 2505 # Sonora
2390 2506 Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08
2391 2507 -7:00 - MST 1927 Jun 10 23:00
2392 2508 -6:00 - CST 1930 Nov 15
2393 2509 -7:00 - MST 1931 May 1 23:00
2394 2510 -6:00 - CST 1931 Oct
2395 2511 -7:00 - MST 1932 Apr 1
2396 2512 -6:00 - CST 1942 Apr 24
2397 2513 -7:00 - MST 1949 Jan 14
2398 2514 -8:00 - PST 1970
2399 2515 -7:00 Mexico M%sT 1999
2400 2516 -7:00 - MST
2401 2517
2402 2518 # From Alexander Krivenyshev (2010-04-21):
2403 2519 # According to news, Bahía de Banderas (Mexican state of Nayarit)
2404 2520 # changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to
2405 2521 # share the same time zone as nearby city Puerto Vallarta, Jalisco).
2406 2522 #
2407 2523 # (Spanish)
2408 2524 # Bahía de Banderas homologa su horario al del centro del
2409 2525 # país, a partir de este domingo
2410 2526 # http://www.nayarit.gob.mx/notes.asp?id=20748
2411 2527 #
2412 2528 # Bahía de Banderas homologa su horario con el del Centro del
2413 2529 # País
2414 2530 # http://www.bahiadebanderas.gob.mx/principal/index.php?option=com_content&view=article&id=261:bahia-de-banderas-homologa-su-horario-con-el-del-centro-del-pais&catid=42:comunicacion-social&Itemid=50
2415 2531 #
2416 2532 # (English)
2417 2533 # Puerto Vallarta and Bahía de Banderas: One Time Zone
2418 2534 # http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-03-Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml
2419 2535 # http://www.worldtimezone.com/dst_news/dst_news_mexico08.html
2420 2536 #
2421 2537 # "Mexico's Senate approved the amendments to the Mexican Schedule System that
2422 2538 # will allow Bahía de Banderas and Puerto Vallarta to share the same time
2423 2539 # zone ..."
2424 2540 # Baja California Sur, Nayarit, Sinaloa
2425 2541
2426 2542 # From Arthur David Olson (2010-05-01):
2427 2543 # Use "Bahia_Banderas" to keep the name to fourteen characters.
2428 2544
2429 2545 # Mazatlán
2430 2546 Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
2431 2547 -7:00 - MST 1927 Jun 10 23:00
2432 2548 -6:00 - CST 1930 Nov 15
2433 2549 -7:00 - MST 1931 May 1 23:00
2434 2550 -6:00 - CST 1931 Oct
2435 2551 -7:00 - MST 1932 Apr 1
2436 2552 -6:00 - CST 1942 Apr 24
2437 2553 -7:00 - MST 1949 Jan 14
2438 2554 -8:00 - PST 1970
2439 2555 -7:00 Mexico M%sT
2440 2556
2441 2557 # Bahía de Banderas
2442 2558 Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00
2443 2559 -7:00 - MST 1927 Jun 10 23:00
2444 2560 -6:00 - CST 1930 Nov 15
2445 2561 -7:00 - MST 1931 May 1 23:00
2446 2562 -6:00 - CST 1931 Oct
2447 2563 -7:00 - MST 1932 Apr 1
2448 2564 -6:00 - CST 1942 Apr 24
2449 2565 -7:00 - MST 1949 Jan 14
2450 2566 -8:00 - PST 1970
2451 2567 -7:00 Mexico M%sT 2010 Apr 4 2:00
2452 2568 -6:00 Mexico C%sT
2453 2569
2454 2570 # Baja California (near US border)
2455 2571 Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
2456 2572 -7:00 - MST 1924
2457 2573 -8:00 - PST 1927 Jun 10 23:00
2458 2574 -7:00 - MST 1930 Nov 15
2459 2575 -8:00 - PST 1931 Apr 1
2460 2576 -8:00 1:00 PDT 1931 Sep 30
2461 2577 -8:00 - PST 1942 Apr 24
2462 2578 -8:00 1:00 PWT 1945 Aug 14 23:00u
2463 2579 -8:00 1:00 PPT 1945 Nov 12 # Peace
2464 2580 -8:00 - PST 1948 Apr 5
2465 2581 -8:00 1:00 PDT 1949 Jan 14
2466 2582 -8:00 - PST 1954
2467 2583 -8:00 CA P%sT 1961
2468 2584 -8:00 - PST 1976
2469 2585 -8:00 US P%sT 1996
2470 2586 -8:00 Mexico P%sT 2001
2471 2587 -8:00 US P%sT 2002 Feb 20
2472 2588 -8:00 Mexico P%sT 2010
2473 2589 -8:00 US P%sT
2474 2590 # Baja California (away from US border)
2475 2591 Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32
2476 2592 -7:00 - MST 1924
2477 2593 -8:00 - PST 1927 Jun 10 23:00
2478 2594 -7:00 - MST 1930 Nov 15
2479 2595 -8:00 - PST 1931 Apr 1
2480 2596 -8:00 1:00 PDT 1931 Sep 30
2481 2597 -8:00 - PST 1942 Apr 24
2482 2598 -8:00 1:00 PWT 1945 Aug 14 23:00u
2483 2599 -8:00 1:00 PPT 1945 Nov 12 # Peace
2484 2600 -8:00 - PST 1948 Apr 5
2485 2601 -8:00 1:00 PDT 1949 Jan 14
2486 2602 -8:00 - PST 1954
2487 2603 -8:00 CA P%sT 1961
2488 2604 -8:00 - PST 1976
2489 2605 -8:00 US P%sT 1996
2490 2606 -8:00 Mexico P%sT 2001
2491 2607 -8:00 US P%sT 2002 Feb 20
2492 2608 -8:00 Mexico P%sT
2493 2609 # From Paul Eggert (2006-03-22):
2494 2610 # Formerly there was an America/Ensenada zone, which differed from
2495 2611 # America/Tijuana only in that it did not observe DST from 1976
2496 2612 # through 1995. This was as per Shanks (1999). But Shanks & Pottenger say
2497 2613 # Ensenada did not observe DST from 1948 through 1975. Guy Harris reports
2498 2614 # that the 1987 OAG says "Only Ensenada, Mexicali, San Felipe and
2499 2615 # Tijuana observe DST," which agrees with Shanks & Pottenger but implies that
2500 2616 # DST-observance was a town-by-town matter back then. This concerns
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2501 2617 # data after 1970 so most likely there should be at least one Zone
2502 2618 # other than America/Tijuana for Baja, but it's not clear yet what its
2503 2619 # name or contents should be.
2504 2620 #
2505 2621 # Revillagigedo Is
2506 2622 # no information
2507 2623
2508 2624 ###############################################################################
2509 2625
2510 2626 # Anguilla
2627 +# Antigua and Barbuda
2511 2628 # See America/Port_of_Spain.
2512 2629
2513 -# Antigua and Barbuda
2514 -# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2515 -Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
2516 - -5:00 - EST 1951
2517 - -4:00 - AST
2518 -
2519 2630 # Bahamas
2520 2631 #
2521 2632 # For 1899 Milne gives -5:09:29.5; round that.
2522 2633 #
2523 2634 # From Sue Williams (2006-12-07):
2524 2635 # The Bahamas announced about a month ago that they plan to change their DST
2525 2636 # rules to sync with the U.S. starting in 2007....
2526 2637 # http://www.jonesbahamas.com/?c=45&a=10412
2527 2638
2528 2639 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2529 2640 Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2530 2641 Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D
2531 2642 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2532 2643 Zone America/Nassau -5:09:30 - LMT 1912 Mar 2
2533 2644 -5:00 Bahamas E%sT 1976
2534 2645 -5:00 US E%sT
2535 2646
2536 2647 # Barbados
2537 2648
2538 2649 # For 1899 Milne gives -3:58:29.2; round that.
2539 2650
2540 2651 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2541 2652 Rule Barb 1977 only - Jun 12 2:00 1:00 D
2542 2653 Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
2543 2654 Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
2544 2655 Rule Barb 1979 only - Sep 30 2:00 0 S
2545 2656 Rule Barb 1980 only - Sep 25 2:00 0 S
2546 2657 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2547 2658 Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown
2548 2659 -3:58:29 - BMT 1932 # Bridgetown Mean Time
2549 2660 -4:00 Barb A%sT
2550 2661
2551 2662 # Belize
2552 2663 # Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
2553 2664 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2554 2665 Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
2555 2666 Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
2556 2667 Rule Belize 1973 only - Dec 5 0:00 1:00 D
2557 2668 Rule Belize 1974 only - Feb 9 0:00 0 S
2558 2669 Rule Belize 1982 only - Dec 18 0:00 1:00 D
2559 2670 Rule Belize 1983 only - Feb 12 0:00 0 S
2560 2671 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2561 2672 Zone America/Belize -5:52:48 - LMT 1912 Apr
2562 2673 -6:00 Belize C%sT
2563 2674
2564 2675 # Bermuda
2565 2676
2566 2677 # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
2567 2678 # Bermuda dockyard, Ireland I; round that.
2568 2679
2569 2680 # From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2570 2681
2571 2682 # Next year, however, clocks in the US will go forward on the second Sunday
2572 2683 # in March, until the first Sunday in November. And, after the Time Zone
2573 2684 # (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
|
↓ open down ↓ |
45 lines elided |
↑ open up ↑ |
2574 2685 # Friday, the same thing will happen in Bermuda.
2575 2686 # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2576 2687
2577 2688 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2578 2689 Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
2579 2690 -4:00 - AST 1974 Apr 28 2:00
2580 2691 -4:00 Canada A%sT 1976
2581 2692 -4:00 US A%sT
2582 2693
2583 2694 # Cayman Is
2584 -# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2695 +
2696 +# From Paul Eggert (2015-05-15):
2697 +# The Cayman government has decided to introduce DST in 2016, the idea being
2698 +# to keep in sync with New York. The legislation hasn't passed but the change
2699 +# seems quite likely. See: Meade B. Cayman 27.
2700 +# http://www.cayman27.com.ky/2015/05/15/clock-ticks-toward-daylight-saving-time-in-cayman
2701 +
2585 2702 Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
2586 2703 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
2587 - -5:00 - EST
2704 + -5:00 - EST 2016
2705 + -5:00 US E%sT
2588 2706
2589 2707 # Costa Rica
2590 2708
2591 2709 # Milne gives -5:36:13.3 as San José mean time; round to nearest.
2592 2710
2593 2711 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2594 2712 Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2595 2713 Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2596 2714 Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2597 2715 # IATA SSIM (1991-09) says the following was at 1:00;
2598 2716 # go with Shanks & Pottenger.
2599 2717 Rule CR 1991 only - Jul 1 0:00 0 S
2600 2718 Rule CR 1992 only - Mar 15 0:00 0 S
2601 2719 # There are too many San Josés elsewhere, so we'll use 'Costa Rica'.
2602 2720 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2603 2721 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José
2604 2722 -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time
2605 2723 -6:00 CR C%sT
2606 2724 # Coco
2607 2725 # no information; probably like America/Costa_Rica
2608 2726
2609 2727 # Cuba
2610 2728
2611 2729 # From Paul Eggert (2013-02-21):
2612 2730 # Milne gives -5:28:50.45 for the observatory at Havana, -5:29:23.57
2613 2731 # for the port, and -5:30 for meteorological observations.
2614 2732 # For now, stick with Shanks & Pottenger.
2615 2733
2616 2734 # From Arthur David Olson (1999-03-29):
2617 2735 # The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
2618 2736 # the Cuban National Team and the Baltimore Orioles was carried live on
2619 2737 # the Orioles Radio Network, including affiliate WTOP in Washington, DC.
2620 2738 # During the game, play-by-play announcer Jim Hunter noted that
2621 2739 # "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
2622 2740 # Time today." (The "two hour" remark referred to losing one hour of
2623 2741 # sleep on 1999-03-28 - when the announcers were in Cuba as it switched
2624 2742 # to DST - and one more hour on 1999-04-04 - when the announcers will have
2625 2743 # returned to Baltimore, which switches on that date.)
2626 2744
2627 2745 # From Steffen Thorsen (2013-11-11):
2628 2746 # DST start in Cuba in 2004 ... does not follow the same rules as the
2629 2747 # years before. The correct date should be Sunday 2004-03-28 00:00 ...
2630 2748 # https://web.archive.org/web/20040402060750/http://www.granma.cu/espanol/2004/marzo/sab27/reloj.html
2631 2749
2632 2750 # From Evert van der Veer via Steffen Thorsen (2004-10-28):
2633 2751 # Cuba is not going back to standard time this year.
2634 2752 # From Paul Eggert (2006-03-22):
2635 2753 # http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html
2636 2754 # says that it's due to a problem at the Antonio Guiteras
2637 2755 # thermoelectric plant, and says "This October there will be no return
2638 2756 # to normal hours (after daylight saving time)".
2639 2757 # For now, let's assume that it's a temporary measure.
2640 2758
2641 2759 # From Carlos A. Carnero Delgado (2005-11-12):
2642 2760 # This year (just like in 2004-2005) there's no change in time zone
2643 2761 # adjustment in Cuba. We will stay in daylight saving time:
2644 2762 # http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html
2645 2763
2646 2764 # From Jesper Nørgaard Welen (2006-10-21):
2647 2765 # An article in GRANMA INTERNACIONAL claims that Cuba will end
2648 2766 # the 3 years of permanent DST next weekend, see
2649 2767 # http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html
2650 2768 # "On Saturday night, October 28 going into Sunday, October 29, at 01:00,
2651 2769 # watches should be set back one hour - going back to 00:00 hours - returning
2652 2770 # to the normal schedule....
2653 2771
2654 2772 # From Paul Eggert (2007-03-02):
2655 2773 # <http://www.granma.cubaweb.cu/english/news/art89.html>, dated yesterday,
2656 2774 # says Cuban clocks will advance at midnight on March 10.
2657 2775 # For lack of better information, assume Cuba will use US rules,
2658 2776 # except that it switches at midnight standard time as usual.
2659 2777 #
2660 2778 # From Steffen Thorsen (2007-10-25):
2661 2779 # Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week
2662 2780 # earlier - on the last Sunday of October, just like in 2006.
2663 2781 #
2664 2782 # He supplied these references:
2665 2783 #
2666 2784 # http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES
2667 2785 # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm
2668 2786 #
2669 2787 # From Alex Krivenyshev (2007-10-25):
2670 2788 # Here is also article from Granma (Cuba):
2671 2789 #
2672 2790 # Regirá el Horario Normal desde el próximo domingo 28 de octubre
2673 2791 # http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html
2674 2792 #
2675 2793 # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html
2676 2794
2677 2795 # From Arthur David Olson (2008-03-09):
2678 2796 # I'm in Maryland which is now observing United States Eastern Daylight
2679 2797 # Time. At 9:44 local time I used RealPlayer to listen to
2680 2798 # http://media.enet.cu/radioreloj
2681 2799 # a Cuban information station, and heard
2682 2800 # the time announced as "ocho cuarenta y cuatro" ("eight forty-four"),
2683 2801 # indicating that Cuba is still on standard time.
2684 2802
2685 2803 # From Steffen Thorsen (2008-03-12):
2686 2804 # It seems that Cuba will start DST on Sunday, 2007-03-16...
2687 2805 # It was announced yesterday, according to this source (in Spanish):
2688 2806 # http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm
2689 2807 #
2690 2808 # Some more background information is posted here:
2691 2809 # http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html
2692 2810 #
2693 2811 # The article also says that Cuba has been observing DST since 1963,
2694 2812 # while Shanks (and tzdata) has 1965 as the first date (except in the
2695 2813 # 1940's). Many other web pages in Cuba also claim that it has been
2696 2814 # observed since 1963, but with the exception of 1970 - an exception
2697 2815 # which is not present in tzdata/Shanks. So there is a chance we need to
2698 2816 # change some historic records as well.
2699 2817 #
2700 2818 # One example:
2701 2819 # http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm
2702 2820
2703 2821 # From Jesper Nørgaard Welen (2008-03-13):
2704 2822 # The Cuban time change has just been confirmed on the most authoritative
2705 2823 # web site, the Granma. Please check out
2706 2824 # http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html
2707 2825 #
2708 2826 # Basically as expected after Steffen Thorsen's information, the change
2709 2827 # will take place midnight between Saturday and Sunday.
2710 2828
2711 2829 # From Arthur David Olson (2008-03-12):
2712 2830 # Assume Sun>=15 (third Sunday) going forward.
2713 2831
2714 2832 # From Alexander Krivenyshev (2009-03-04)
2715 2833 # According to the Radio Reloj - Cuba will start Daylight Saving Time on
2716 2834 # midnight between Saturday, March 07, 2009 and Sunday, March 08, 2009-
2717 2835 # not on midnight March 14 / March 15 as previously thought.
2718 2836 #
2719 2837 # http://www.worldtimezone.com/dst_news/dst_news_cuba05.html
2720 2838 # (in Spanish)
2721 2839
2722 2840 # From Arthur David Olson (2009-03-09)
2723 2841 # I listened over the Internet to
2724 2842 # http://media.enet.cu/readioreloj
2725 2843 # this morning; when it was 10:05 a. m. here in Bethesda, Maryland the
2726 2844 # the time was announced as "diez cinco" - the same time as here, indicating
2727 2845 # that has indeed switched to DST. Assume second Sunday from 2009 forward.
2728 2846
2729 2847 # From Steffen Thorsen (2011-03-08):
2730 2848 # Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00
2731 2849 # this year. Nothing about the end date known so far (if that has
2732 2850 # changed at all).
2733 2851 #
2734 2852 # Source:
2735 2853 # http://granma.co.cu/2011/03/08/nacional/artic01.html
2736 2854 #
2737 2855 # Our info:
2738 2856 # http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html
2739 2857 #
2740 2858 # From Steffen Thorsen (2011-10-30)
2741 2859 # Cuba will end DST two weeks later this year. Instead of going back
2742 2860 # tonight, it has been delayed to 2011-11-13 at 01:00.
2743 2861 #
2744 2862 # One source (Spanish)
2745 2863 # http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html
2746 2864 #
2747 2865 # Our page:
2748 2866 # http://www.timeanddate.com/news/time/cuba-time-changes-2011.html
2749 2867 #
2750 2868 # From Steffen Thorsen (2012-03-01)
2751 2869 # According to Radio Reloj, Cuba will start DST on Midnight between March
2752 2870 # 31 and April 1.
2753 2871 #
2754 2872 # Radio Reloj has the following info (Spanish):
2755 2873 # http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril
2756 2874 #
2757 2875 # Our info on it:
2758 2876 # http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html
2759 2877
2760 2878 # From Steffen Thorsen (2012-11-03):
2761 2879 # Radio Reloj and many other sources report that Cuba is changing back
2762 2880 # to standard time on 2012-11-04:
2763 2881 # http://www.radioreloj.cu/index.php/noticias-radio-reloj/36-nacionales/9961-regira-horario-normal-en-cuba-desde-el-domingo-cuatro-de-noviembre
2764 2882 # From Paul Eggert (2012-11-03):
2765 2883 # For now, assume the future rule is first Sunday in November.
2766 2884
2767 2885 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2768 2886 Rule Cuba 1928 only - Jun 10 0:00 1:00 D
2769 2887 Rule Cuba 1928 only - Oct 10 0:00 0 S
2770 2888 Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D
2771 2889 Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S
2772 2890 Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D
2773 2891 Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S
2774 2892 Rule Cuba 1965 only - Jun 1 0:00 1:00 D
2775 2893 Rule Cuba 1965 only - Sep 30 0:00 0 S
2776 2894 Rule Cuba 1966 only - May 29 0:00 1:00 D
2777 2895 Rule Cuba 1966 only - Oct 2 0:00 0 S
2778 2896 Rule Cuba 1967 only - Apr 8 0:00 1:00 D
2779 2897 Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S
2780 2898 Rule Cuba 1968 only - Apr 14 0:00 1:00 D
2781 2899 Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D
2782 2900 Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
2783 2901 Rule Cuba 1972 1974 - Oct 8 0:00 0 S
2784 2902 Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
2785 2903 Rule Cuba 1978 only - May 7 0:00 1:00 D
2786 2904 Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
2787 2905 Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
2788 2906 Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
2789 2907 Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
2790 2908 Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D
2791 2909 Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
2792 2910 Rule Cuba 1996 only - Oct 6 0:00s 0 S
2793 2911 Rule Cuba 1997 only - Oct 12 0:00s 0 S
2794 2912 Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D
2795 2913 Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S
2796 2914 Rule Cuba 2000 2003 - Apr Sun>=1 0:00s 1:00 D
2797 2915 Rule Cuba 2004 only - Mar lastSun 0:00s 1:00 D
2798 2916 Rule Cuba 2006 2010 - Oct lastSun 0:00s 0 S
2799 2917 Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D
2800 2918 Rule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D
2801 2919 Rule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D
2802 2920 Rule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D
2803 2921 Rule Cuba 2011 only - Nov 13 0:00s 0 S
2804 2922 Rule Cuba 2012 only - Apr 1 0:00s 1:00 D
2805 2923 Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S
2806 2924 Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D
2807 2925
2808 2926 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2809 2927 Zone America/Havana -5:29:28 - LMT 1890
2810 2928 -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
2811 2929 -5:00 Cuba C%sT
2812 2930
2813 2931 # Dominica
2814 2932 # See America/Port_of_Spain.
2815 2933
2816 2934 # Dominican Republic
2817 2935
2818 2936 # From Steffen Thorsen (2000-10-30):
2819 2937 # Enrique Morales reported to me that the Dominican Republic has changed the
2820 2938 # time zone to Eastern Standard Time as of Sunday 29 at 2 am....
2821 2939 # http://www.listin.com.do/antes/261000/republica/princi.html
2822 2940
2823 2941 # From Paul Eggert (2000-12-04):
2824 2942 # That URL (2000-10-26, in Spanish) says they planned to use US-style DST.
2825 2943
2826 2944 # From Rives McDow (2000-12-01):
2827 2945 # Dominican Republic changed its mind and presidential decree on Tuesday,
2828 2946 # November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the
2829 2947 # Dominican Republic will be reverting to 8 hours from the International Date
2830 2948 # Line, and will not be using DST in the foreseeable future. The reason they
2831 2949 # decided to use DST was to be in synch with Puerto Rico, who was also going
2832 2950 # to implement DST. When Puerto Rico didn't implement DST, the president
2833 2951 # decided to revert.
2834 2952
2835 2953
2836 2954 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2837 2955 Rule DR 1966 only - Oct 30 0:00 1:00 D
2838 2956 Rule DR 1967 only - Feb 28 0:00 0 S
2839 2957 Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
2840 2958 Rule DR 1970 only - Feb 21 0:00 0 S
2841 2959 Rule DR 1971 only - Jan 20 0:00 0 S
2842 2960 Rule DR 1972 1974 - Jan 21 0:00 0 S
2843 2961 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2844 2962 Zone America/Santo_Domingo -4:39:36 - LMT 1890
2845 2963 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
2846 2964 -5:00 DR E%sT 1974 Oct 27
2847 2965 -4:00 - AST 2000 Oct 29 2:00
2848 2966 -5:00 US E%sT 2000 Dec 3 1:00
2849 2967 -4:00 - AST
2850 2968
2851 2969 # El Salvador
2852 2970
2853 2971 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2854 2972 Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
2855 2973 Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
2856 2974 # There are too many San Salvadors elsewhere, so use America/El_Salvador
2857 2975 # instead of America/San_Salvador.
2858 2976 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2859 2977 Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
2860 2978 -6:00 Salv C%sT
2861 2979
2862 2980 # Grenada
2863 2981 # Guadeloupe
2864 2982 # St Barthélemy
2865 2983 # St Martin (French part)
2866 2984 # See America/Port_of_Spain.
2867 2985
2868 2986 # Guatemala
2869 2987 #
2870 2988 # From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen:
2871 2989 # Diario Co Latino, at
2872 2990 # <http://www.diariocolatino.com/internacionales/detalles.asp?NewsID=8079>,
2873 2991 # says in an article dated 2006-04-19 that the Guatemalan government had
2874 2992 # decided on that date to advance official time by 60 minutes, to lessen the
2875 2993 # impact of the elevated cost of oil.... Daylight saving time will last from
2876 2994 # 2006-04-29 24:00 (Guatemalan standard time) to 2006-09-30 (time unspecified).
2877 2995 # From Paul Eggert (2006-06-22):
2878 2996 # The Ministry of Energy and Mines, press release CP-15/2006
2879 2997 # (2006-04-19), says DST ends at 24:00. See
2880 2998 # http://www.sieca.org.gt/Sitio_publico/Energeticos/Doc/Medidas/Cambio_Horario_Nac_190406.pdf
2881 2999
2882 3000 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2883 3001 Rule Guat 1973 only - Nov 25 0:00 1:00 D
2884 3002 Rule Guat 1974 only - Feb 24 0:00 0 S
2885 3003 Rule Guat 1983 only - May 21 0:00 1:00 D
2886 3004 Rule Guat 1983 only - Sep 22 0:00 0 S
2887 3005 Rule Guat 1991 only - Mar 23 0:00 1:00 D
2888 3006 Rule Guat 1991 only - Sep 7 0:00 0 S
2889 3007 Rule Guat 2006 only - Apr 30 0:00 1:00 D
2890 3008 Rule Guat 2006 only - Oct 1 0:00 0 S
2891 3009 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2892 3010 Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
2893 3011 -6:00 Guat C%sT
2894 3012
2895 3013 # Haiti
2896 3014 # From Gwillim Law (2005-04-15):
2897 3015 # Risto O. Nykänen wrote me that Haiti is now on DST.
2898 3016 # I searched for confirmation, and I found a press release
2899 3017 # on the Web page of the Haitian Consulate in Chicago (2005-03-31),
2900 3018 # <http://www.haitianconsulate.org/time.doc>. Translated from French, it says:
2901 3019 #
2902 3020 # "The Prime Minister's Communication Office notifies the public in general
2903 3021 # and the press in particular that, following a decision of the Interior
2904 3022 # Ministry and the Territorial Collectivities [I suppose that means the
2905 3023 # provinces], Haiti will move to Eastern Daylight Time in the night from next
2906 3024 # Saturday the 2nd to Sunday the 3rd.
2907 3025 #
2908 3026 # "Consequently, the Prime Minister's Communication Office wishes to inform
2909 3027 # the population that the country's clocks will be set forward one hour
2910 3028 # starting at midnight. This provision will hold until the last Saturday in
2911 3029 # October 2005.
2912 3030 #
2913 3031 # "Port-au-Prince, March 31, 2005"
2914 3032 #
2915 3033 # From Steffen Thorsen (2006-04-04):
2916 3034 # I have been informed by users that Haiti observes DST this year like
2917 3035 # last year, so the current "only" rule for 2005 might be changed to a
2918 3036 # "max" rule or to last until 2006. (Who knows if they will observe DST
2919 3037 # next year or if they will extend their DST like US/Canada next year).
2920 3038 #
2921 3039 # I have found this article about it (in French):
2922 3040 # http://www.haitipressnetwork.com/news.cfm?articleID=7612
2923 3041 #
2924 3042 # The reason seems to be an energy crisis.
2925 3043
2926 3044 # From Stephen Colebourne (2007-02-22):
2927 3045 # Some IATA info: Haiti won't be having DST in 2007.
2928 3046
2929 3047 # From Steffen Thorsen (2012-03-11):
2930 3048 # According to several news sources, Haiti will observe DST this year,
2931 3049 # apparently using the same start and end date as USA/Canada.
2932 3050 # So this means they have already changed their time.
2933 3051 #
2934 3052 # http://www.alterpresse.org/spip.php?article12510
2935 3053 # http://radiovision2000haiti.net/home/?p=13253
2936 3054 #
2937 3055 # From Arthur David Olson (2012-03-11):
2938 3056 # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
2939 3057 # 3:00 a.m. rather than the traditional Haitian jump at midnight.
2940 3058 # Assume a US-style fall back as well.
2941 3059
2942 3060 # From Steffen Thorsen (2013-03-10):
2943 3061 # It appears that Haiti is observing DST this year as well, same rules
2944 3062 # as US/Canada. They did it last year as well, and it looks like they
2945 3063 # are going to observe DST every year now...
2946 3064 #
2947 3065 # http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
2948 3066 # http://www.canalplushaiti.net/?p=6714
2949 3067
2950 3068 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2951 3069 Rule Haiti 1983 only - May 8 0:00 1:00 D
2952 3070 Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
2953 3071 Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
2954 3072 # Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
2955 3073 # Go with IATA.
2956 3074 Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
2957 3075 Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
2958 3076 Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
2959 3077 Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
2960 3078 Rule Haiti 2012 max - Mar Sun>=8 2:00 1:00 D
2961 3079 Rule Haiti 2012 max - Nov Sun>=1 2:00 0 S
2962 3080 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2963 3081 Zone America/Port-au-Prince -4:49:20 - LMT 1890
2964 3082 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
2965 3083 -5:00 Haiti E%sT
2966 3084
2967 3085 # Honduras
2968 3086 # Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
2969 3087
2970 3088 # From Paul Eggert (2006-05-05):
2971 3089 # worldtimezone.com reports a 2006-05-02 Spanish-language AP article
2972 3090 # saying Honduras will start using DST midnight Saturday, effective 4
2973 3091 # months until September. La Tribuna reported today
2974 3092 # <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president
2975 3093 # of Honduras, refused to back down on this.
2976 3094
2977 3095 # From Jesper Nørgaard Welen (2006-08-08):
2978 3096 # It seems that Honduras has returned from DST to standard time this Monday at
2979 3097 # 00:00 hours (prolonging Sunday to 25 hours duration).
2980 3098 # http://www.worldtimezone.com/dst_news/dst_news_honduras04.html
2981 3099
2982 3100 # From Paul Eggert (2006-08-08):
2983 3101 # Also see Diario El Heraldo, The country returns to standard time (2006-08-08).
2984 3102 # http://www.elheraldo.hn/nota.php?nid=54941&sec=12
2985 3103 # It mentions executive decree 18-2006.
2986 3104
2987 3105 # From Steffen Thorsen (2006-08-17):
2988 3106 # Honduras will observe DST from 2007 to 2009, exact dates are not
2989 3107 # published, I have located this authoritative source:
2990 3108 # http://www.presidencia.gob.hn/noticia.aspx?nId=47
2991 3109
2992 3110 # From Steffen Thorsen (2007-03-30):
2993 3111 # http://www.laprensahn.com/pais_nota.php?id04962=7386
2994 3112 # So it seems that Honduras will not enter DST this year....
2995 3113
2996 3114 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2997 3115 Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
2998 3116 Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
2999 3117 Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
3000 3118 Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
3001 3119 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3002 3120 Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
3003 3121 -6:00 Hond C%sT
3004 3122 #
3005 3123 # Great Swan I ceded by US to Honduras in 1972
3006 3124
3007 3125 # Jamaica
3008 3126 # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
3009 3127 # unspecified official document, and says "This time is used throughout the
3010 3128 # island". Go with Milne. Round to the nearest second as required by zic.
3011 3129 #
3012 3130 # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but
3013 3131 # Lance Neita writes that Prime Minister Michael Manley decreed it January 5.
3014 3132 # Assume Neita meant Jan 6 02:00, the same as the US. Neita also writes that
3015 3133 # Manley's supporters associated this act with Manley's nickname "Joshua"
3016 3134 # (recall that in the Bible the sun stood still at Joshua's request),
3017 3135 # and with the Rod of Correction which Manley said he had received from
3018 3136 # Haile Selassie, Emperor of Ethiopia. See:
3019 3137 # Neita L. The politician in all of us. Jamaica Observer 2014-09-20
3020 3138 # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
3021 3139 #
3022 3140 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3023 3141 Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
3024 3142 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
3025 3143 -5:00 - EST 1974
3026 3144 -5:00 US E%sT 1984
3027 3145 -5:00 - EST
3028 3146
3029 3147 # Martinique
3030 3148 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3031 3149 Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
3032 3150 -4:04:20 - FFMT 1911 May # Fort-de-France MT
3033 3151 -4:00 - AST 1980 Apr 6
3034 3152 -4:00 1:00 ADT 1980 Sep 28
3035 3153 -4:00 - AST
3036 3154
3037 3155 # Montserrat
3038 3156 # See America/Port_of_Spain.
3039 3157
3040 3158 # Nicaragua
3041 3159 #
3042 3160 # This uses Shanks & Pottenger for times before 2005.
3043 3161 #
3044 3162 # From Steffen Thorsen (2005-04-12):
3045 3163 # I've got reports from 8 different people that Nicaragua just started
3046 3164 # DST on Sunday 2005-04-10, in order to save energy because of
3047 3165 # expensive petroleum. The exact end date for DST is not yet
3048 3166 # announced, only "September" but some sites also say "mid-September".
3049 3167 # Some background information is available on the President's official site:
3050 3168 # http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm
3051 3169 # The Decree, no 23-2005 is available here:
3052 3170 # http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2005/Decreto%2023-2005%20Se%20adelanta%20en%20una%20hora%20en%20todo%20el%20territorio%20nacional%20apartir%20de%20las%2024horas%20del%2009%20de%20Abril.pdf
3053 3171 #
3054 3172 # From Paul Eggert (2005-05-01):
3055 3173 # The decree doesn't say anything about daylight saving, but for now let's
3056 3174 # assume that it is daylight saving....
3057 3175 #
3058 3176 # From Gwillim Law (2005-04-21):
3059 3177 # The Associated Press story on the time change, which can be found at
3060 3178 # http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html
3061 3179 # and elsewhere, says (fifth paragraph, translated from Spanish): "The last
3062 3180 # time that a change of clocks was applied to save energy was in the year 2000
3063 3181 # during the Arnoldo Alemán administration."...
3064 3182 # The northamerica file says that Nicaragua has been on UTC-6 continuously
3065 3183 # since December 1998. I wasn't able to find any details of Nicaraguan time
3066 3184 # changes in 2000. Perhaps a note could be added to the northamerica file, to
3067 3185 # the effect that we have indirect evidence that DST was observed in 2000.
3068 3186 #
3069 3187 # From Jesper Nørgaard Welen (2005-11-02):
3070 3188 # Nicaragua left DST the 2005-10-02 at 00:00 (local time).
3071 3189 # http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm
3072 3190 # (2005-09-26)
3073 3191 #
3074 3192 # From Jesper Nørgaard Welen (2006-05-05):
3075 3193 # http://www.elnuevodiario.com.ni/2006/05/01/nacionales/18410
3076 3194 # (my informal translation)
3077 3195 # By order of the president of the republic, Enrique Bolaños, Nicaragua
3078 3196 # advanced by sixty minutes their official time, yesterday at 2 in the
3079 3197 # morning, and will stay that way until 30th of September.
3080 3198 #
3081 3199 # From Jesper Nørgaard Welen (2006-09-30):
3082 3200 # http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2006/D-063-2006P-PRN-Cambio-Hora.pdf
3083 3201 # My informal translation runs:
3084 3202 # The natural sun time is restored in all the national territory, in that the
3085 3203 # time is returned one hour at 01:00 am of October 1 of 2006.
3086 3204 #
3087 3205 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3088 3206 Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
3089 3207 Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
3090 3208 Rule Nic 2005 only - Apr 10 0:00 1:00 D
3091 3209 Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
3092 3210 Rule Nic 2006 only - Apr 30 2:00 1:00 D
3093 3211 Rule Nic 2006 only - Oct Sun>=1 1:00 0 S
3094 3212 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3095 3213 Zone America/Managua -5:45:08 - LMT 1890
3096 3214 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
3097 3215 -6:00 - CST 1973 May
3098 3216 -5:00 - EST 1975 Feb 16
3099 3217 -6:00 Nic C%sT 1992 Jan 1 4:00
3100 3218 -5:00 - EST 1992 Sep 24
3101 3219 -6:00 - CST 1993
3102 3220 -5:00 - EST 1997
3103 3221 -6:00 Nic C%sT
3104 3222
3105 3223 # Panama
3106 3224 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3107 3225 Zone America/Panama -5:18:08 - LMT 1890
3108 3226 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time
3109 3227 -5:00 - EST
3110 3228
3111 3229 # Puerto Rico
3112 3230 # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
3113 3231 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3114 3232 Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
3115 3233 -4:00 - AST 1942 May 3
3116 3234 -4:00 US A%sT 1946
3117 3235 -4:00 - AST
3118 3236
3119 3237 # St Kitts-Nevis
3120 3238 # St Lucia
3121 3239 # See America/Port_of_Spain.
3122 3240
3123 3241 # St Pierre and Miquelon
3124 3242 # There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
3125 3243 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3126 3244 Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
3127 3245 -4:00 - AST 1980 May
3128 3246 -3:00 - PMST 1987 # Pierre & Miquelon Time
3129 3247 -3:00 Canada PM%sT
3130 3248
3131 3249 # St Vincent and the Grenadines
3132 3250 # See America/Port_of_Spain.
3133 3251
3134 3252 # Turks and Caicos
3135 3253 #
3136 3254 # From Chris Dunn in
3137 3255 # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007
3138 3256 # (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the
3139 3257 # daylight saving dates for time changes have been adjusted to match
3140 3258 # the recent U.S. change of dates.
3141 3259 #
3142 3260 # From Brian Inglis (2007-04-28):
3143 3261 # http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26]
3144 3262 # there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three
3145 3263 # rows before that there is an out of date entry for Oct:
3146 3264 # "Eastern Standard Times Begins 2007
3147 3265 # Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time"
3148 3266 # indicating that the normal ET rules are followed.
3149 3267 #
3150 3268 # From Paul Eggert (2014-08-19):
3151 3269 # The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
3152 3270 # http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
3153 3271 # Model this as a switch from EST/EDT to AST ...
3154 3272 # From Chris Walton (2014-11-04):
3155 3273 # ... the TCI government appears to have delayed the switch to
3156 3274 # "permanent daylight saving time" by one year....
3157 3275 # http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
3158 3276 #
3159 3277 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3160 3278 Zone America/Grand_Turk -4:44:32 - LMT 1890
3161 3279 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
3162 3280 -5:00 - EST 1979
3163 3281 -5:00 US E%sT 2015 Nov Sun>=1 2:00
3164 3282 -4:00 - AST
3165 3283
3166 3284 # British Virgin Is
3167 3285 # Virgin Is
3168 3286 # See America/Port_of_Spain.
3169 3287
3170 3288
3171 3289 # Local Variables:
3172 3290 # coding: utf-8
3173 3291 # End:
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