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5722 Update timezone info db to 2015a
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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):
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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 -Rule US 1945 only - Sep 30 2:00 0 S
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
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:
230 230 # Public law 106-564 (2000-12-23) introduced the abbreviation
231 231 # "Chamorro Standard Time" for time in Guam and the Northern Marianas.
232 232 # See the file "australasia".
233 233
234 234 # From Arthur David Olson, 2005-08-09
235 235 # The following was signed into law on 2005-08-08.
236 236 #
237 237 # H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS.
238 238 # (a) Amendment.--Section 3(a) of the Uniform Time Act of 1966 (15
239 239 # U.S.C. 260a(a)) is amended--
240 240 # (1) by striking "first Sunday of April" and inserting "second
241 241 # Sunday of March"; and
242 242 # (2) by striking "last Sunday of October" and inserting "first
243 243 # Sunday of November'.
244 244 # (b) Effective Date.--Subsection (a) shall take effect 1 year after the
245 245 # date of enactment of this Act or March 1, 2007, whichever is later.
246 246 # (c) Report to Congress.--Not later than 9 months after the effective
247 247 # date stated in subsection (b), the Secretary shall report to Congress
248 248 # on the impact of this section on energy consumption in the United
249 249 # States.
250 250 # (d) Right to Revert.--Congress retains the right to revert the
251 251 # Daylight Saving Time back to the 2005 time schedules once the
252 252 # Department study is complete.
253 253
254 254 # US eastern time, represented by New York
255 255
256 256 # Connecticut, Delaware, District of Columbia, most of Florida,
257 257 # Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky
258 258 # (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts,
259 259 # New Hampshire, New Jersey, New York, North Carolina, Ohio,
260 260 # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
261 261 # Vermont, Virginia, West Virginia
262 262
263 263 # From Dave Cantor (2004-11-02):
264 264 # Early this summer I had the occasion to visit the Mount Washington
265 265 # Observatory weather station atop (of course!) Mount Washington [, NH]....
266 266 # One of the staff members said that the station was on Eastern Standard Time
267 267 # and didn't change their clocks for Daylight Saving ... so that their
268 268 # reports will always have times which are 5 hours behind UTC.
269 269
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270 270 # From Paul Eggert (2005-08-26):
271 271 # According to today's Huntsville Times
272 272 # http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1
273 273 # a few towns on Alabama's "eastern border with Georgia, such as Phenix City
274 274 # in Russell County, Lanett in Chambers County and some towns in Lee County,
275 275 # set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
276 276 # Roberts, city administrator in Phenix City. as saying "We are in the Central
277 277 # time zone, but we do go by the Eastern time zone because so many people work
278 278 # in Columbus."
279 279
280 +# From Paul Eggert (2014-09-06):
281 +# Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
282 +# says that New York City Hall time was 3 minutes 58.4 seconds fast of
283 +# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the
284 +# nearest second.
285 +
280 286 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
281 287 Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
282 288 Rule NYC 1920 only - Oct lastSun 2:00 0 S
283 289 Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
284 290 Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
285 291 Rule NYC 1955 1966 - Oct lastSun 2:00 0 S
286 292 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
287 293 Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58
288 294 -5:00 US E%sT 1920
289 295 -5:00 NYC E%sT 1942
290 296 -5:00 US E%sT 1946
291 297 -5:00 NYC E%sT 1967
292 298 -5:00 US E%sT
293 299
294 300 # US central time, represented by Chicago
295 301
296 302 # Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia,
297 303 # Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and
298 304 # Washington counties), Illinois, western Indiana
299 305 # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
300 306 # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western
301 307 # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern
302 308 # Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
303 309 # western Tennessee, most of Texas, Wisconsin
304 310
305 311 # From Larry M. Smith (2006-04-26) re Wisconsin:
306 312 # http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
307 313 # is currently enforced at the 01:00 time of change. Because the local
308 314 # "bar time" in the state corresponds to 02:00, a number of citations
309 315 # are issued for the "sale of class 'B' alcohol after prohibited
310 316 # hours" within the deviated hour of this change every year....
311 317 #
312 318 # From Douglas R. Bomberg (2007-03-12):
313 319 # Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
314 320 # Statue 175 closer in synch with the US Congress' intent....
315 321 # http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
316 322
317 323 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
318 324 Rule Chicago 1920 only - Jun 13 2:00 1:00 D
319 325 Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
320 326 Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
321 327 Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
322 328 Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
323 329 Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
324 330 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
325 331 Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
326 332 -6:00 US C%sT 1920
327 333 -6:00 Chicago C%sT 1936 Mar 1 2:00
328 334 -5:00 - EST 1936 Nov 15 2:00
329 335 -6:00 Chicago C%sT 1942
330 336 -6:00 US C%sT 1946
331 337 -6:00 Chicago C%sT 1967
332 338 -6:00 US C%sT
333 339 # Oliver County, ND switched from mountain to central time on 1992-10-25.
334 340 Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48
335 341 -7:00 US M%sT 1992 Oct 25 2:00
336 342 -6:00 US C%sT
337 343 # Morton County, ND, switched from mountain to central time on
338 344 # 2003-10-26, except for the area around Mandan which was already central time.
339 345 # See <http://dmses.dot.gov/docimages/p63/135818.pdf>.
340 346 # Officially this switch also included part of Sioux County, and
341 347 # Jones, Mellette, and Todd Counties in South Dakota;
342 348 # but in practice these other counties were already observing central time.
343 349 # See <http://www.epa.gov/fedrgstr/EPA-IMPACT/2003/October/Day-28/i27056.htm>.
344 350 Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21
345 351 -7:00 US M%sT 2003 Oct 26 2:00
346 352 -6:00 US C%sT
347 353
348 354 # From Josh Findley (2011-01-21):
349 355 # ...it appears that Mercer County, North Dakota, changed from the
350 356 # mountain time zone to the central time zone at the last transition from
351 357 # daylight-saving to standard time (on Nov. 7, 2010):
352 358 # http://www.gpo.gov/fdsys/pkg/FR-2010-09-29/html/2010-24376.htm
353 359 # http://www.bismarcktribune.com/news/local/article_1eb1b588-c758-11df-b472-001cc4c03286.html
354 360
355 361 # From Andy Lipscomb (2011-01-24):
356 362 # ...according to the Census Bureau, the largest city is Beulah (although
357 363 # it's commonly referred to as Beulah-Hazen, with Hazen being the next
358 364 # largest city in Mercer County). Google Maps places Beulah's city hall
359 365 # at 47 degrees 15' 51" N, 101 degrees 46' 40" W, which yields an offset
360 366 # of 6h47'07".
361 367
362 368 Zone America/North_Dakota/Beulah -6:47:07 - LMT 1883 Nov 18 12:12:53
363 369 -7:00 US M%sT 2010 Nov 7 2:00
364 370 -6:00 US C%sT
365 371
366 372 # US mountain time, represented by Denver
367 373 #
368 374 # Colorado, far western Kansas, Montana, western
369 375 # Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City),
370 376 # New Mexico, southwestern North Dakota,
371 377 # western South Dakota, far western Texas (El Paso County, Hudspeth County,
372 378 # and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
373 379 #
374 380 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
375 381 Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
376 382 Rule Denver 1920 only - Oct lastSun 2:00 0 S
377 383 Rule Denver 1921 only - May 22 2:00 0 S
378 384 Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D
379 385 Rule Denver 1965 1966 - Oct lastSun 2:00 0 S
380 386 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
381 387 Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04
382 388 -7:00 US M%sT 1920
383 389 -7:00 Denver M%sT 1942
384 390 -7:00 US M%sT 1946
385 391 -7:00 Denver M%sT 1967
386 392 -7:00 US M%sT
387 393
388 394 # US Pacific time, represented by Los Angeles
389 395 #
390 396 # California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
391 397 # Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county
392 398 # north of the Salmon River, and the towns of Burgdorf and Warren),
393 399 # Nevada (except West Wendover), Oregon (except the northern 3/4 of
394 400 # Malheur county), and Washington
395 401 #
396 402 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
397 403 Rule CA 1948 only - Mar 14 2:00 1:00 D
398 404 Rule CA 1949 only - Jan 1 2:00 0 S
399 405 Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
400 406 Rule CA 1950 1961 - Sep lastSun 2:00 0 S
401 407 Rule CA 1962 1966 - Oct lastSun 2:00 0 S
402 408 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
403 409 Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
404 410 -8:00 US P%sT 1946
405 411 -8:00 CA P%sT 1967
406 412 -8:00 US P%sT
407 413
408 414 # Alaska
409 415 # AK%sT is the modern abbreviation for -9:00 per USNO.
410 416 #
411 417 # From Paul Eggert (2001-05-30):
412 418 # Howse writes that Alaska switched from the Julian to the Gregorian calendar,
413 419 # and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
414 420 # This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
415 421 # also a Friday. Include only the time zone part of this transition,
416 422 # ignoring the switch from Julian to Gregorian, since we can't represent
417 423 # the Julian calendar.
418 424 #
419 425 # As far as we know, none of the exact locations mentioned below were
420 426 # permanently inhabited in 1867 by anyone using either calendar.
421 427 # (Yakutat was colonized by the Russians in 1799, but the settlement
422 428 # was destroyed in 1805 by a Yakutat-kon war party.) However, there
423 429 # were nearby inhabitants in some cases and for our purposes perhaps
424 430 # it's best to simply use the official transition.
425 431
426 432 # From Paul Eggert (2014-07-18):
427 433 # One opinion of the early-1980s turmoil in Alaska over time zones and
428 434 # daylight saving time appeared as graffiti on a Juneau airport wall:
429 435 # "Welcome to Juneau. Please turn your watch back to the 19th century."
430 436 # See: Turner W. Alaska's four time zones now two. NY Times 1983-11-01.
431 437 # http://www.nytimes.com/1983/11/01/us/alaska-s-four-time-zones-now-two.html
432 438 #
433 439 # Steve Ferguson (2011-01-31) referred to the following source:
434 440 # Norris F. Keeping time in Alaska: national directives, local response.
435 441 # Alaska History 2001;16(1-2).
436 442 # http://alaskahistoricalsociety.org/discover-alaska/glimpses-of-the-past/keeping-time-in-alaska/
437 443
438 444 # From Arthur David Olson (2011-02-01):
439 445 # Here's database-relevant material from the 2001 "Alaska History" article:
440 446 #
441 447 # On September 20 [1979]...DOT...officials decreed that on April 27,
442 448 # 1980, Juneau and other nearby communities would move to Yukon Time.
443 449 # Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on
444 450 # Pacific Time.
445 451 #
446 452 # ...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the
447 453 # Department's September 1979 decision. Juneau and other communities in
448 454 # northern Southeast reverted to Pacific Time on October 26.
449 455 #
450 456 # On October 28 [1983]...the Metlakatla Indian Community Council voted
451 457 # unanimously to keep the reservation on Pacific Time.
452 458 #
453 459 # According to DOT official Joanne Petrie, Indian reservations are not
454 460 # bound to follow time zones imposed by neighboring jurisdictions.
455 461 #
456 462 # (The last is consistent with how the database now handles the Navajo
457 463 # Nation.)
458 464
459 465 # From Arthur David Olson (2011-02-09):
460 466 # I just spoke by phone with a staff member at the Metlakatla Indian
461 467 # Community office (using contact information available at
462 468 # http://www.commerce.state.ak.us/dca/commdb/CIS.cfm?Comm_Boro_name=Metlakatla
463 469 # It's shortly after 1:00 here on the east coast of the United States;
464 470 # the staffer said it was shortly after 10:00 there. When I asked whether
465 471 # that meant they were on Pacific time, they said no - they were on their
466 472 # own time. I asked about daylight saving; they said it wasn't used. I
467 473 # did not inquire about practices in the past.
468 474
469 475 # From Arthur David Olson (2011-08-17):
470 476 # For lack of better information, assume that Metlakatla's
471 477 # abandonment of use of daylight saving resulted from the 1983 vote.
472 478
473 479 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
474 480 Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
475 481 -8:57:41 - LMT 1900 Aug 20 12:00
476 482 -8:00 - PST 1942
477 483 -8:00 US P%sT 1946
478 484 -8:00 - PST 1969
479 485 -8:00 US P%sT 1980 Apr 27 2:00
480 486 -9:00 US Y%sT 1980 Oct 26 2:00
481 487 -8:00 US P%sT 1983 Oct 30 2:00
482 488 -9:00 US Y%sT 1983 Nov 30
483 489 -9:00 US AK%sT
484 490 Zone America/Sitka 14:58:47 - LMT 1867 Oct 18
485 491 -9:01:13 - LMT 1900 Aug 20 12:00
486 492 -8:00 - PST 1942
487 493 -8:00 US P%sT 1946
488 494 -8:00 - PST 1969
489 495 -8:00 US P%sT 1983 Oct 30 2:00
490 496 -9:00 US Y%sT 1983 Nov 30
491 497 -9:00 US AK%sT
492 498 Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18
493 499 -8:46:18 - LMT 1900 Aug 20 12:00
494 500 -8:00 - PST 1942
495 501 -8:00 US P%sT 1946
496 502 -8:00 - PST 1969
497 503 -8:00 US P%sT 1983 Oct 30 2:00
498 504 -8:00 - PST
499 505 Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18
500 506 -9:18:55 - LMT 1900 Aug 20 12:00
501 507 -9:00 - YST 1942
502 508 -9:00 US Y%sT 1946
503 509 -9:00 - YST 1969
504 510 -9:00 US Y%sT 1983 Nov 30
505 511 -9:00 US AK%sT
506 512 Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
507 513 -9:59:36 - LMT 1900 Aug 20 12:00
508 514 -10:00 - CAT 1942
509 515 -10:00 US CAT/CAWT 1945 Aug 14 23:00u
510 516 -10:00 US CAT/CAPT 1946 # Peace
511 517 -10:00 - CAT 1967 Apr
512 518 -10:00 - AHST 1969
513 519 -10:00 US AH%sT 1983 Oct 30 2:00
514 520 -9:00 US Y%sT 1983 Nov 30
515 521 -9:00 US AK%sT
516 522 Zone America/Nome 12:58:21 - LMT 1867 Oct 18
517 523 -11:01:38 - LMT 1900 Aug 20 12:00
518 524 -11:00 - NST 1942
519 525 -11:00 US N%sT 1946
520 526 -11:00 - NST 1967 Apr
521 527 -11:00 - BST 1969
522 528 -11:00 US B%sT 1983 Oct 30 2:00
523 529 -9:00 US Y%sT 1983 Nov 30
524 530 -9:00 US AK%sT
525 531 Zone America/Adak 12:13:21 - LMT 1867 Oct 18
526 532 -11:46:38 - LMT 1900 Aug 20 12:00
527 533 -11:00 - NST 1942
528 534 -11:00 US N%sT 1946
529 535 -11:00 - NST 1967 Apr
530 536 -11:00 - BST 1969
531 537 -11:00 US B%sT 1983 Oct 30 2:00
532 538 -10:00 US AH%sT 1983 Nov 30
533 539 -10:00 US HA%sT
534 540 # The following switches don't quite make our 1970 cutoff.
535 541 #
536 542 # Shanks writes that part of southwest Alaska (e.g. Aniak)
537 543 # switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
538 544 # and another part (e.g. Akiak) made the same switch five weeks later.
539 545 #
540 546 # From David Flater (2004-11-09):
541 547 # In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska
542 548 # Historic Preservation Commission, provided this information, which
543 549 # suggests that Unalaska deviated from statutory time from early 1967
544 550 # possibly until 1983:
545 551 #
546 552 # Minutes of the Unalaska City Council Meeting, January 10, 1967:
547 553 # "Except for St. Paul and Akutan, Unalaska is the only important
548 554 # location not on Alaska Standard Time. The following resolution was
549 555 # made by William Robinson and seconded by Henry Swanson: Be it
550 556 # resolved that the City of Unalaska hereby goes to Alaska Standard
551 557 # Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday,
552 558 # January 14, Alaska Standard Time.) This resolution was passed with
553 559 # three votes for and one against."
554 560
555 561 # Hawaii
556 562
557 563 # From Arthur David Olson (2010-12-09):
558 564 # "Hawaiian Time" by Robert C. Schmitt and Doak C. Cox appears on pages 207-225
559 565 # of volume 26 of The Hawaiian Journal of History (1992). As of 2010-12-09,
560 566 # the article is available at
561 567 # http://evols.library.manoa.hawaii.edu/bitstream/10524/239/2/JL26215.pdf
562 568 # and indicates that standard time was adopted effective noon, January
563 569 # 13, 1896 (page 218), that in "1933, the Legislature decreed daylight
564 570 # saving for the period between the last Sunday of each April and the
565 571 # last Sunday of each September, but less than a month later repealed the
566 572 # act," (page 220), that year-round daylight saving time was in effect
567 573 # from 1942-02-09 to 1945-09-30 (page 221, with no time of day given for
568 574 # when clocks changed) and that clocks were changed by 30 minutes
569 575 # effective the second Sunday of June, 1947 (page 219, with no time of
570 576 # day given for when clocks changed). A footnote for the 1933 changes
571 577 # cites Session Laws of Hawaii 1933, "Act. 90 (approved 26 Apr. 1933)
572 578 # and Act 163 (approved 21 May 1933)."
573 579
574 580 # From Arthur David Olson (2011-01-19):
575 581 # The following is from "Laws of the Territory of Hawaii Passed by the
576 582 # Seventeenth Legislature: Regular Session 1933," available (as of
577 583 # 2011-01-19) at American University's Pence Law Library. Page 85: "Act
578 584 # 90...At 2 o'clock ante meridian of the last Sunday in April of each
579 585 # year, the standard time of this Territory shall be advanced one
580 586 # hour...This Act shall take effect upon its approval. Approved this 26th
581 587 # day of April, A. D. 1933. LAWRENCE M JUDD, Governor of the Territory of
582 588 # Hawaii." Page 172: "Act 163...Act 90 of the Session Laws of 1933 is
583 589 # hereby repealed...This Act shall take effect upon its approval, upon
584 590 # which date the standard time of this Territory shall be restored to
585 591 # that existing immediately prior to the taking effect of said Act 90.
586 592 # Approved this 21st day of May, A. D. 1933. LAWRENCE M. JUDD, Governor
587 593 # of the Territory of Hawaii."
588 594 #
589 595 # Note that 1933-05-21 was a Sunday.
590 596 # We're left to guess the time of day when Act 163 was approved; guess noon.
591 597
592 598 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
593 599 Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00
594 600 -10:30 - HST 1933 Apr 30 2:00
595 601 -10:30 1:00 HDT 1933 May 21 12:00
596 602 -10:30 - HST 1942 Feb 9 2:00
597 603 -10:30 1:00 HDT 1945 Sep 30 2:00
598 604 -10:30 - HST 1947 Jun 8 2:00
599 605 -10:00 - HST
600 606 Link Pacific/Honolulu Pacific/Johnston
601 607
602 608 # Now we turn to US areas that have diverged from the consensus since 1970.
603 609
604 610 # Arizona mostly uses MST.
605 611
606 612 # From Paul Eggert (2002-10-20):
607 613 #
608 614 # The information in the rest of this paragraph is derived from the
609 615 # Daylight Saving Time web page
610 616 # <http://www.dlapr.lib.az.us/links/daylight.htm> (2002-01-23)
611 617 # maintained by the Arizona State Library, Archives and Public Records.
612 618 # Between 1944-01-01 and 1944-04-01 the State of Arizona used standard
613 619 # time, but by federal law railroads, airlines, bus lines, military
614 620 # personnel, and some engaged in interstate commerce continued to
615 621 # observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix
616 622 # Gazette says that was the date the law changed, and that 04-01 was
617 623 # the date the state's clocks would change. In 1945 the State of
618 624 # Arizona used standard time all year, again with exceptions only as
619 625 # mandated by federal law. Arizona observed DST in 1967, but Arizona
620 626 # Laws 1968, ch. 183 (effective 1968-03-21) repealed DST.
621 627 #
622 628 # Shanks says the 1944 experiment came to an end on 1944-03-17.
623 629 # Go with the Arizona State Library instead.
624 630
625 631 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
626 632 Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
627 633 -7:00 US M%sT 1944 Jan 1 0:01
628 634 -7:00 - MST 1944 Apr 1 0:01
629 635 -7:00 US M%sT 1944 Oct 1 0:01
630 636 -7:00 - MST 1967
631 637 -7:00 US M%sT 1968 Mar 21
632 638 -7:00 - MST
633 639 # From Arthur David Olson (1988-02-13):
634 640 # A writer from the Inter Tribal Council of Arizona, Inc.,
635 641 # notes in private correspondence dated 1987-12-28 that "Presently, only the
636 642 # Navajo Nation participates in the Daylight Saving Time policy, due to its
637 643 # large size and location in three states." (The "only" means that other
638 644 # tribal nations don't use DST.)
639 645 #
640 646 # From Paul Eggert (2013-08-26):
641 647 # See America/Denver for a zone appropriate for the Navajo Nation.
642 648
643 649 # Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine,
644 650 # Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark,
645 651 # Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome,
646 652 # Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power,
647 653 # Teton, Twin Falls, Valley, Washington counties, and the southern
648 654 # quarter of Idaho county) and eastern Oregon (most of Malheur County)
649 655 # switched four weeks late in 1974.
650 656 #
651 657 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
652 658 Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11
653 659 -8:00 US P%sT 1923 May 13 2:00
654 660 -7:00 US M%sT 1974
655 661 -7:00 - MST 1974 Feb 3 2:00
656 662 -7:00 US M%sT
657 663
658 664 # Indiana
659 665 #
660 666 # For a map of Indiana's time zone regions, see:
661 667 # http://en.wikipedia.org/wiki/Time_in_Indiana
662 668 #
663 669 # From Paul Eggert (2007-08-17):
664 670 # Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
665 671 # with the following exceptions:
666 672 #
667 673 # - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
668 674 # Vanderburgh, and Warrick counties have been like America/Chicago.
669 675 #
670 676 # - Dearborn and Ohio counties have been like America/New_York.
671 677 #
672 678 # - Clark, Floyd, and Harrison counties have been like
673 679 # America/Kentucky/Louisville.
674 680 #
675 681 # - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke,
676 682 # and Switzerland counties have their own time zone histories as noted below.
677 683 #
678 684 # Shanks partitioned Indiana into 345 regions, each with its own time history,
679 685 # and wrote "Even newspaper reports present contradictory information."
680 686 # Those Hoosiers! Such a flighty and changeable people!
681 687 # Fortunately, most of the complexity occurred before our cutoff date of 1970.
682 688 #
683 689 # Other than Indianapolis, the Indiana place names are so nondescript
684 690 # that they would be ambiguous if we left them at the 'America' level.
685 691 # So we reluctantly put them all in a subdirectory 'America/Indiana'.
686 692
687 693 # From Paul Eggert (2014-06-26):
688 694 # https://www.federalregister.gov/articles/2006/01/20/06-563/standard-time-zone-boundary-in-the-state-of-indiana
689 695 # says "DOT is relocating the time zone boundary in Indiana to move Starke,
690 696 # Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the
691 697 # Eastern Time Zone to the Central Time Zone.... The effective date of
692 698 # this rule is 2 a.m. EST Sunday, April 2, 2006, which is the
693 699 # changeover date from standard time to Daylight Saving Time."
694 700 # Strictly speaking, this meant the affected counties changed their
695 701 # clocks twice that night, but this obviously was in error. The intent
696 702 # was that 01:59:59 EST be followed by 02:00:00 CDT.
697 703
698 704 # From Gwillim Law (2007-02-10):
699 705 # The Associated Press has been reporting that Pulaski County, Indiana is
700 706 # going to switch from Central to Eastern Time on March 11, 2007....
701 707 # http://www.indystar.com/apps/pbcs.dll/article?AID=/20070207/LOCAL190108/702070524/0/LOCAL
702 708
703 709 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
704 710 Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D
705 711 Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S
706 712 Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D
707 713 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
708 714 Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22
709 715 -6:00 US C%sT 1920
710 716 -6:00 Indianapolis C%sT 1942
711 717 -6:00 US C%sT 1946
712 718 -6:00 Indianapolis C%sT 1955 Apr 24 2:00
713 719 -5:00 - EST 1957 Sep 29 2:00
714 720 -6:00 - CST 1958 Apr 27 2:00
715 721 -5:00 - EST 1969
716 722 -5:00 US E%sT 1971
717 723 -5:00 - EST 2006
718 724 -5:00 US E%sT
719 725 #
720 726 # Eastern Crawford County, Indiana, left its clocks alone in 1974,
721 727 # as well as from 1976 through 2005.
722 728 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
723 729 Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
724 730 Rule Marengo 1951 only - Sep lastSun 2:00 0 S
725 731 Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D
726 732 Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S
727 733 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
728 734 Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37
729 735 -6:00 US C%sT 1951
730 736 -6:00 Marengo C%sT 1961 Apr 30 2:00
731 737 -5:00 - EST 1969
732 738 -5:00 US E%sT 1974 Jan 6 2:00
733 739 -6:00 1:00 CDT 1974 Oct 27 2:00
734 740 -5:00 US E%sT 1976
735 741 -5:00 - EST 2006
736 742 -5:00 US E%sT
737 743 #
738 744 # Daviess, Dubois, Knox, and Martin Counties, Indiana,
739 745 # switched from eastern to central time in April 2006, then switched back
740 746 # in November 2007.
741 747 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
742 748 Rule Vincennes 1946 only - Apr lastSun 2:00 1:00 D
743 749 Rule Vincennes 1946 only - Sep lastSun 2:00 0 S
744 750 Rule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D
745 751 Rule Vincennes 1953 1959 - Sep lastSun 2:00 0 S
746 752 Rule Vincennes 1955 only - May 1 0:00 1:00 D
747 753 Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D
748 754 Rule Vincennes 1960 only - Oct lastSun 2:00 0 S
749 755 Rule Vincennes 1961 only - Sep lastSun 2:00 0 S
750 756 Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S
751 757 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
752 758 Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53
753 759 -6:00 US C%sT 1946
754 760 -6:00 Vincennes C%sT 1964 Apr 26 2:00
755 761 -5:00 - EST 1969
756 762 -5:00 US E%sT 1971
757 763 -5:00 - EST 2006 Apr 2 2:00
758 764 -6:00 US C%sT 2007 Nov 4 2:00
759 765 -5:00 US E%sT
760 766 #
761 767 # Perry County, Indiana, switched from eastern to central time in April 2006.
762 768 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
763 769 Rule Perry 1946 only - Apr lastSun 2:00 1:00 D
764 770 Rule Perry 1946 only - Sep lastSun 2:00 0 S
765 771 Rule Perry 1953 1954 - Apr lastSun 2:00 1:00 D
766 772 Rule Perry 1953 1959 - Sep lastSun 2:00 0 S
767 773 Rule Perry 1955 only - May 1 0:00 1:00 D
768 774 Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D
769 775 Rule Perry 1960 only - Oct lastSun 2:00 0 S
770 776 Rule Perry 1961 only - Sep lastSun 2:00 0 S
771 777 Rule Perry 1962 1963 - Oct lastSun 2:00 0 S
772 778 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
773 779 Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57
774 780 -6:00 US C%sT 1946
775 781 -6:00 Perry C%sT 1964 Apr 26 2:00
776 782 -5:00 - EST 1969
777 783 -5:00 US E%sT 1971
778 784 -5:00 - EST 2006 Apr 2 2:00
779 785 -6:00 US C%sT
780 786 #
781 787 # Pike County, Indiana moved from central to eastern time in 1977,
782 788 # then switched back in 2006, then switched back again in 2007.
783 789 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
784 790 Rule Pike 1955 only - May 1 0:00 1:00 D
785 791 Rule Pike 1955 1960 - Sep lastSun 2:00 0 S
786 792 Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D
787 793 Rule Pike 1961 1964 - Oct lastSun 2:00 0 S
788 794 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
789 795 Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53
790 796 -6:00 US C%sT 1955
791 797 -6:00 Pike C%sT 1965 Apr 25 2:00
792 798 -5:00 - EST 1966 Oct 30 2:00
793 799 -6:00 US C%sT 1977 Oct 30 2:00
794 800 -5:00 - EST 2006 Apr 2 2:00
795 801 -6:00 US C%sT 2007 Nov 4 2:00
796 802 -5:00 US E%sT
797 803 #
798 804 # Starke County, Indiana moved from central to eastern time in 1991,
799 805 # then switched back in 2006.
800 806 # From Arthur David Olson (1991-10-28):
801 807 # An article on page A3 of the Sunday, 1991-10-27 Washington Post
802 808 # notes that Starke County switched from Central time to Eastern time as of
803 809 # 1991-10-27.
804 810 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
805 811 Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
806 812 Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
807 813 Rule Starke 1955 1956 - Oct lastSun 2:00 0 S
808 814 Rule Starke 1957 1958 - Sep lastSun 2:00 0 S
809 815 Rule Starke 1959 1961 - Oct lastSun 2:00 0 S
810 816 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
811 817 Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30
812 818 -6:00 US C%sT 1947
813 819 -6:00 Starke C%sT 1962 Apr 29 2:00
814 820 -5:00 - EST 1963 Oct 27 2:00
815 821 -6:00 US C%sT 1991 Oct 27 2:00
816 822 -5:00 - EST 2006 Apr 2 2:00
817 823 -6:00 US C%sT
818 824 #
819 825 # Pulaski County, Indiana, switched from eastern to central time in
820 826 # April 2006 and then switched back in March 2007.
821 827 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
822 828 Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D
823 829 Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S
824 830 Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S
825 831 Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S
826 832 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
827 833 Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35
828 834 -6:00 US C%sT 1946
829 835 -6:00 Pulaski C%sT 1961 Apr 30 2:00
830 836 -5:00 - EST 1969
831 837 -5:00 US E%sT 1971
832 838 -5:00 - EST 2006 Apr 2 2:00
833 839 -6:00 US C%sT 2007 Mar 11 2:00
834 840 -5:00 US E%sT
835 841 #
836 842 # Switzerland County, Indiana, did not observe DST from 1973 through 2005.
837 843 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
838 844 Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44
839 845 -6:00 US C%sT 1954 Apr 25 2:00
840 846 -5:00 - EST 1969
841 847 -5:00 US E%sT 1973
842 848 -5:00 - EST 2006
843 849 -5:00 US E%sT
844 850
845 851 # Part of Kentucky left its clocks alone in 1974.
846 852 # This also includes Clark, Floyd, and Harrison counties in Indiana.
847 853 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
848 854 Rule Louisville 1921 only - May 1 2:00 1:00 D
849 855 Rule Louisville 1921 only - Sep 1 2:00 0 S
850 856 Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
851 857 Rule Louisville 1941 only - Sep lastSun 2:00 0 S
852 858 Rule Louisville 1946 only - Jun 2 2:00 0 S
853 859 Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S
854 860 Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S
855 861 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
856 862 Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58
857 863 -6:00 US C%sT 1921
858 864 -6:00 Louisville C%sT 1942
859 865 -6:00 US C%sT 1946
860 866 -6:00 Louisville C%sT 1961 Jul 23 2:00
861 867 -5:00 - EST 1968
862 868 -5:00 US E%sT 1974 Jan 6 2:00
863 869 -6:00 1:00 CDT 1974 Oct 27 2:00
864 870 -5:00 US E%sT
865 871 #
866 872 # Wayne County, Kentucky
867 873 #
868 874 # From Lake Cumberland LIFE
869 875 # http://www.lake-cumberland.com/life/archive/news990129time.shtml
870 876 # (1999-01-29) via WKYM-101.7:
871 877 # Clinton County has joined Wayne County in asking the DoT to change from
872 878 # the Central to the Eastern time zone.... The Wayne County government made
873 879 # the same request in December. And while Russell County officials have not
874 880 # taken action, the majority of respondents to a poll conducted there in
875 881 # August indicated they would like to change to "fast time" also.
876 882 # The three Lake Cumberland counties are the farthest east of any U.S.
877 883 # location in the Central time zone.
878 884 #
879 885 # From Rich Wales (2000-08-29):
880 886 # After prolonged debate, and despite continuing deep differences of opinion,
881 887 # Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
882 888 # (-0500) time. They won't "fall back" this year. See Sara Shipley,
883 889 # The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
884 890 #
885 891 # From Paul Eggert (2001-07-16):
886 892 # The final rule was published in the
887 893 # Federal Register 65, 160 (2000-08-17), pp 50154-50158.
888 894 # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22
889 895 #
890 896 Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36
891 897 -6:00 US C%sT 1946
892 898 -6:00 - CST 1968
893 899 -6:00 US C%sT 2000 Oct 29 2:00
894 900 -5:00 US E%sT
895 901
896 902
897 903 # From Rives McDow (2000-08-30):
898 904 # Here ... are all the changes in the US since 1985.
899 905 # Kearny County, KS (put all of county on central;
900 906 # previously split between MST and CST) ... 1990-10
901 907 # Starke County, IN (from CST to EST) ... 1991-10
902 908 # Oliver County, ND (from MST to CST) ... 1992-10
903 909 # West Wendover, NV (from PST TO MST) ... 1999-10
904 910 # Wayne County, KY (from CST to EST) ... 2000-10
905 911 #
906 912 # From Paul Eggert (2001-07-17):
907 913 # We don't know where the line used to be within Kearny County, KS,
908 914 # so omit that change for now.
909 915 # See America/Indiana/Knox for the Starke County, IN change.
910 916 # See America/North_Dakota/Center for the Oliver County, ND change.
911 917 # West Wendover, NV officially switched from Pacific to mountain time on
912 918 # 1999-10-31. See the
913 919 # Federal Register 64, 203 (1999-10-21), pp 56705-56707.
914 920 # http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15
915 921 # However, the Federal Register says that West Wendover already operated
916 922 # on mountain time, and the rule merely made this official;
917 923 # hence a separate tz entry is not needed.
918 924
919 925 # Michigan
920 926 #
921 927 # From Bob Devine (1988-01-28):
922 928 # Michigan didn't observe DST from 1968 to 1973.
923 929 #
924 930 # From Paul Eggert (1999-03-31):
925 931 # Shanks writes that Michigan started using standard time on 1885-09-18,
926 932 # but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01)
927 933 # that Detroit kept
928 934 #
929 935 # local time until 1900 when the City Council decreed that clocks should
930 936 # be put back twenty-eight minutes to Central Standard Time. Half the
931 937 # city obeyed, half refused. After considerable debate, the decision
932 938 # was rescinded and the city reverted to Sun time. A derisive offer to
933 939 # erect a sundial in front of the city hall was referred to the
934 940 # Committee on Sewers. Then, in 1905, Central time was adopted
935 941 # by city vote.
936 942 #
937 943 # This story is too entertaining to be false, so go with Howse over Shanks.
938 944 #
939 945 # From Paul Eggert (2001-03-06):
940 946 # Garland (1927) writes "Cleveland and Detroit advanced their clocks
941 947 # one hour in 1914." This change is not in Shanks. We have no more
942 948 # info, so omit this for now.
943 949 #
944 950 # Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
945 951 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
946 952 Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
947 953 Rule Detroit 1948 only - Sep lastSun 2:00 0 S
948 954 Rule Detroit 1967 only - Jun 14 2:00 1:00 D
949 955 Rule Detroit 1967 only - Oct lastSun 2:00 0 S
950 956 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
951 957 Zone America/Detroit -5:32:11 - LMT 1905
952 958 -6:00 - CST 1915 May 15 2:00
953 959 -5:00 - EST 1942
954 960 -5:00 US E%sT 1946
955 961 -5:00 Detroit E%sT 1973
956 962 -5:00 US E%sT 1975
957 963 -5:00 - EST 1975 Apr 27 2:00
958 964 -5:00 US E%sT
959 965 #
960 966 # Dickinson, Gogebic, Iron, and Menominee Counties, Michigan,
961 967 # switched from EST to CST/CDT in 1973.
962 968 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
963 969 Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
964 970 Rule Menominee 1946 only - Sep lastSun 2:00 0 S
965 971 Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
966 972 Rule Menominee 1966 only - Oct lastSun 2:00 0 S
967 973 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
968 974 Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
969 975 -6:00 US C%sT 1946
970 976 -6:00 Menominee C%sT 1969 Apr 27 2:00
971 977 -5:00 - EST 1973 Apr 29 2:00
972 978 -6:00 US C%sT
973 979
974 980 # Navassa
975 981 # administered by the US Fish and Wildlife Service
976 982 # claimed by US under the provisions of the 1856 Guano Islands Act
977 983 # also claimed by Haiti
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978 984 # occupied 1857/1900 by the Navassa Phosphate Co
979 985 # US lighthouse 1917/1996-09
980 986 # currently uninhabited
981 987 # see Mark Fineman, "An Isle Rich in Guano and Discord",
982 988 # _Los Angeles Times_ (1998-11-10), A1, A10; it cites
983 989 # Jimmy Skaggs, _The Great Guano Rush_ (1994).
984 990
985 991 ################################################################################
986 992
987 993
988 -# From Paul Eggert (2006-03-22):
989 -# A good source for time zone historical data outside the U.S. is
994 +# From Paul Eggert (2014-10-31):
995 +#
996 +# Unless otherwise specified, the source for data through 1990 is:
990 997 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
991 998 # San Diego: ACS Publications, Inc. (2003).
999 +# Unfortunately this book contains many errors and cites no sources.
992 1000 #
993 1001 # Gwillim Law writes that a good source
994 1002 # for recent time zone data is the International Air Transport
995 1003 # Association's Standard Schedules Information Manual (IATA SSIM),
996 1004 # published semiannually. Law sent in several helpful summaries
997 -# of the IATA's data after 1990.
1005 +# of the IATA's data after 1990. Except where otherwise noted,
1006 +# IATA SSIM is the source for entries after 1990.
998 1007 #
999 -# Except where otherwise noted, Shanks & Pottenger is the source for
1000 -# entries through 1990, and IATA SSIM is the source for entries afterwards.
1001 -#
1002 1008 # Other sources occasionally used include:
1003 1009 #
1004 1010 # Edward W. Whitman, World Time Differences,
1005 1011 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
1006 1012 # which I found in the UCLA library.
1007 1013 #
1008 1014 # William Willett, The Waste of Daylight, 19th edition
1009 1015 # <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf>
1010 1016 # [PDF] (1914-03)
1011 1017 #
1012 1018 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
1013 1019 # <http://www.jstor.org/stable/1774359>.
1014 1020 #
1015 1021 # See the 'europe' file for Greenland.
1016 1022
1017 1023 # Canada
1018 1024
1019 1025 # From Alain LaBonté (1994-11-14):
1020 1026 # I post here the time zone abbreviations standardized in Canada
1021 1027 # for both English and French in the CAN/CSA-Z234.4-89 standard....
1022 1028 #
1023 1029 # UTC Standard time Daylight saving time
1024 1030 # offset French English French English
1025 1031 # -2:30 - - HAT NDT
1026 1032 # -3 - - HAA ADT
1027 1033 # -3:30 HNT NST - -
1028 1034 # -4 HNA AST HAE EDT
1029 1035 # -5 HNE EST HAC CDT
1030 1036 # -6 HNC CST HAR MDT
1031 1037 # -7 HNR MST HAP PDT
1032 1038 # -8 HNP PST HAY YDT
1033 1039 # -9 HNY YST - -
1034 1040 #
1035 1041 # HN: Heure Normale ST: Standard Time
1036 1042 # HA: Heure Avancée DT: Daylight saving Time
1037 1043 #
1038 1044 # A: de l'Atlantique Atlantic
1039 1045 # C: du Centre Central
1040 1046 # E: de l'Est Eastern
1041 1047 # M: Mountain
1042 1048 # N: Newfoundland
1043 1049 # P: du Pacifique Pacific
1044 1050 # R: des Rocheuses
1045 1051 # T: de Terre-Neuve
1046 1052 # Y: du Yukon Yukon
1047 1053 #
1048 1054 # From Paul Eggert (1994-11-22):
1049 1055 # Alas, this sort of thing must be handled by localization software.
1050 1056
1051 1057 # Unless otherwise specified, the data entries for Canada are all from Shanks
1052 1058 # & Pottenger.
1053 1059
1054 1060 # From Chris Walton (2006-04-01, 2006-04-25, 2006-06-26, 2007-01-31,
1055 1061 # 2007-03-01):
1056 1062 # The British Columbia government announced yesterday that it will
1057 1063 # adjust daylight savings next year to align with changes in the
1058 1064 # U.S. and the rest of Canada....
1059 1065 # http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm
1060 1066 # ...
1061 1067 # Nova Scotia
1062 1068 # Daylight saving time will be extended by four weeks starting in 2007....
1063 1069 # http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf
1064 1070 #
1065 1071 # [For New Brunswick] the new legislation dictates that the time change is to
1066 1072 # be done at 02:00 instead of 00:01.
1067 1073 # http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf
1068 1074 # ...
1069 1075 # Manitoba has traditionally changed the clock every fall at 03:00.
1070 1076 # As of 2006, the transition is to take place one hour earlier at 02:00.
1071 1077 # http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php
1072 1078 # ...
1073 1079 # [Alberta, Ontario, Quebec] will follow US rules.
1074 1080 # http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM
1075 1081 # http://www.e-laws.gov.on.ca/DBLaws/Source/Regs/English/2006/R06111_e.htm
1076 1082 # http://www2.publicationsduquebec.gouv.qc.ca/dynamicSearch/telecharge.php?type=5&file=2006C39A.PDF
1077 1083 # ...
1078 1084 # P.E.I. will follow US rules....
1079 1085 # http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf
1080 1086 # ...
1081 1087 # Province of Newfoundland and Labrador....
1082 1088 # http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
1083 1089 # ...
1084 1090 # Yukon
1085 1091 # http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
1086 1092 # ...
1087 1093 # N.W.T. will follow US rules. Whoever maintains the government web site
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1088 1094 # does not seem to believe in bookmarks. To see the news release, click the
1089 1095 # following link and search for "Daylight Savings Time Change". Press the
1090 1096 # "Daylight Savings Time Change" link; it will fire off a popup using
1091 1097 # JavaScript.
1092 1098 # http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive
1093 1099 # ...
1094 1100 # Nunavut
1095 1101 # An amendment to the Interpretation Act was registered on February 19/2007....
1096 1102 # http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
1097 1103
1098 -# From Paul Eggert (2006-04-25):
1104 +# From Paul Eggert (2014-10-18):
1099 1105 # H. David Matthews and Mary Vincent's map
1100 1106 # "It's about TIME", _Canadian Geographic_ (September-October 1998)
1101 -# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
1107 +# http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp
1102 1108 # contains detailed boundaries for regions observing nonstandard
1103 1109 # time and daylight saving time arrangements in Canada circa 1998.
1104 1110 #
1105 -# INMS, the Institute for National Measurement Standards in Ottawa, has
1106 -# information about standard and daylight saving time zones in Canada.
1107 -# http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php
1108 -# (updated periodically).
1111 +# National Research Council Canada maintains info about time zones and DST.
1112 +# http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
1113 +# http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
1109 1114 # Its unofficial information is often taken from Matthews and Vincent.
1110 1115
1111 1116 # From Paul Eggert (2006-06-27):
1112 1117 # For now, assume all of DST-observing Canada will fall into line with the
1113 1118 # new US DST rules,
1114 1119
1115 1120 # From Chris Walton (2011-12-01)
1116 1121 # In the first of Tammy Hardwick's articles
1117 1122 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1118 1123 # she quotes the Friday November 1/1918 edition of the Creston Review.
1119 1124 # The quote includes these two statements:
1120 1125 # 'Sunday the CPR went back to the old system of time...'
1121 1126 # '... The daylight saving scheme was dropped all over Canada at the same time,'
1122 1127 # These statements refer to a transition from daylight time to standard time
1123 1128 # that occurred nationally on Sunday October 27/1918. This transition was
1124 1129 # also documented in the Saturday October 26/1918 edition of the Toronto Star.
1125 1130
1126 1131 # In light of that evidence, we alter the date from the earlier believed
1127 1132 # Oct 31, to Oct 27, 1918 (and Sunday is a more likely transition day
1128 1133 # than Thursday) in all Canadian rulesets.
1129 1134
1130 1135 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1131 1136 Rule Canada 1918 only - Apr 14 2:00 1:00 D
1132 1137 Rule Canada 1918 only - Oct 27 2:00 0 S
1133 1138 Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
1134 1139 Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
1135 1140 Rule Canada 1945 only - Sep 30 2:00 0 S
1136 1141 Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
1137 1142 Rule Canada 1974 2006 - Oct lastSun 2:00 0 S
1138 1143 Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D
1139 1144 Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D
1140 1145 Rule Canada 2007 max - Nov Sun>=1 2:00 0 S
1141 1146
1142 1147
1143 1148 # Newfoundland and Labrador
1144 1149
1145 1150 # From Paul Eggert (2000-10-02):
1146 1151 # Matthews and Vincent (1998) write that Labrador should use NST/NDT,
1147 1152 # but the only part of Labrador that follows the rules is the
1148 1153 # southeast corner, including Port Hope Simpson and Mary's Harbour,
1149 1154 # but excluding, say, Black Tickle.
1150 1155
1151 1156 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1152 1157 Rule StJohns 1917 only - Apr 8 2:00 1:00 D
1153 1158 Rule StJohns 1917 only - Sep 17 2:00 0 S
1154 1159 # Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks & Pottenger.
1155 1160 Rule StJohns 1919 only - May 5 23:00 1:00 D
1156 1161 Rule StJohns 1919 only - Aug 12 23:00 0 S
1157 1162 # For 1931-1935 Whitman gives Apr same date; go with Shanks & Pottenger.
1158 1163 Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D
1159 1164 Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S
1160 1165 # For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks &
1161 1166 # Pottenger.
1162 1167 Rule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D
1163 1168 Rule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S
1164 1169 # Whitman gives the following transitions:
1165 1170 # 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07
1166 1171 # but go with Shanks & Pottenger and assume they used Canadian rules.
1167 1172 # For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives
1168 1173 # Apr 30 - Sep 24; go with Shanks & Pottenger.
1169 1174 Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D
1170 1175 Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S
1171 1176 Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D
1172 1177 Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S
1173 1178 Rule StJohns 1960 1986 - Oct lastSun 2:00 0 S
1174 1179 # From Paul Eggert (2000-10-02):
1175 1180 # INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches
1176 1181 # at 00:01 local time. For now, assume it started in 1987.
1177 1182
1178 1183 # From Michael Pelley (2011-09-12):
1179 1184 # We received today, Monday, September 12, 2011, notification that the
1180 1185 # changes to the Newfoundland Standard Time Act have been proclaimed.
1181 1186 # The change in the Act stipulates that the change from Daylight Savings
1182 1187 # Time to Standard Time and from Standard Time to Daylight Savings Time
1183 1188 # now occurs at 2:00AM.
1184 1189 # ...
1185 1190 # http://www.assembly.nl.ca/legislation/sr/annualstatutes/2011/1106.chp.htm
1186 1191 # ...
1187 1192 # MICHAEL PELLEY | Manager of Enterprise Architecture - Solution Delivery
1188 1193 # Office of the Chief Information Officer
1189 1194 # Executive Council
1190 1195 # Government of Newfoundland & Labrador
1191 1196
1192 1197 Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D
1193 1198 Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S
1194 1199 Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD
1195 1200 Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D
1196 1201 Rule StJohns 2007 2011 - Mar Sun>=8 0:01 1:00 D
1197 1202 Rule StJohns 2007 2010 - Nov Sun>=1 0:01 0 S
1198 1203 #
1199 1204 # St John's has an apostrophe, but Posix file names can't have apostrophes.
1200 1205 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1201 1206 Zone America/St_Johns -3:30:52 - LMT 1884
1202 1207 -3:30:52 StJohns N%sT 1918
1203 1208 -3:30:52 Canada N%sT 1919
1204 1209 -3:30:52 StJohns N%sT 1935 Mar 30
1205 1210 -3:30 StJohns N%sT 1942 May 11
1206 1211 -3:30 Canada N%sT 1946
1207 1212 -3:30 StJohns N%sT 2011 Nov
1208 1213 -3:30 Canada N%sT
1209 1214
1210 1215 # most of east Labrador
1211 1216
1212 1217 # The name 'Happy Valley-Goose Bay' is too long; use 'Goose Bay'.
1213 1218 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1214 1219 Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
1215 1220 -3:30:52 - NST 1918
1216 1221 -3:30:52 Canada N%sT 1919
1217 1222 -3:30:52 - NST 1935 Mar 30
1218 1223 -3:30 - NST 1936
1219 1224 -3:30 StJohns N%sT 1942 May 11
1220 1225 -3:30 Canada N%sT 1946
1221 1226 -3:30 StJohns N%sT 1966 Mar 15 2:00
1222 1227 -4:00 StJohns A%sT 2011 Nov
1223 1228 -4:00 Canada A%sT
1224 1229
1225 1230
1226 1231 # west Labrador, Nova Scotia, Prince Edward I
1227 1232
1228 1233 # From Paul Eggert (2006-03-22):
1229 1234 # Shanks & Pottenger write that since 1970 most of this region has been like
1230 1235 # Halifax. Many locales did not observe peacetime DST until 1972;
1231 1236 # Glace Bay, NS is the largest that we know of.
1232 1237 # Shanks & Pottenger also write that Liverpool, NS was the only town
1233 1238 # in Canada to observe DST in 1971 but not 1970; for now we'll assume
1234 1239 # this is a typo.
1235 1240
1236 1241 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1237 1242 Rule Halifax 1916 only - Apr 1 0:00 1:00 D
1238 1243 Rule Halifax 1916 only - Oct 1 0:00 0 S
1239 1244 Rule Halifax 1920 only - May 9 0:00 1:00 D
1240 1245 Rule Halifax 1920 only - Aug 29 0:00 0 S
1241 1246 Rule Halifax 1921 only - May 6 0:00 1:00 D
1242 1247 Rule Halifax 1921 1922 - Sep 5 0:00 0 S
1243 1248 Rule Halifax 1922 only - Apr 30 0:00 1:00 D
1244 1249 Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
1245 1250 Rule Halifax 1923 only - Sep 4 0:00 0 S
1246 1251 Rule Halifax 1924 only - Sep 15 0:00 0 S
1247 1252 Rule Halifax 1925 only - Sep 28 0:00 0 S
1248 1253 Rule Halifax 1926 only - May 16 0:00 1:00 D
1249 1254 Rule Halifax 1926 only - Sep 13 0:00 0 S
1250 1255 Rule Halifax 1927 only - May 1 0:00 1:00 D
1251 1256 Rule Halifax 1927 only - Sep 26 0:00 0 S
1252 1257 Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
1253 1258 Rule Halifax 1928 only - Sep 9 0:00 0 S
1254 1259 Rule Halifax 1929 only - Sep 3 0:00 0 S
1255 1260 Rule Halifax 1930 only - Sep 15 0:00 0 S
1256 1261 Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S
1257 1262 Rule Halifax 1932 only - May 1 0:00 1:00 D
1258 1263 Rule Halifax 1933 only - Apr 30 0:00 1:00 D
1259 1264 Rule Halifax 1933 only - Oct 2 0:00 0 S
1260 1265 Rule Halifax 1934 only - May 20 0:00 1:00 D
1261 1266 Rule Halifax 1934 only - Sep 16 0:00 0 S
1262 1267 Rule Halifax 1935 only - Jun 2 0:00 1:00 D
1263 1268 Rule Halifax 1935 only - Sep 30 0:00 0 S
1264 1269 Rule Halifax 1936 only - Jun 1 0:00 1:00 D
1265 1270 Rule Halifax 1936 only - Sep 14 0:00 0 S
1266 1271 Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D
1267 1272 Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S
1268 1273 Rule Halifax 1939 only - May 28 0:00 1:00 D
1269 1274 Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D
1270 1275 Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D
1271 1276 Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S
1272 1277 Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D
1273 1278 Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S
1274 1279 Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D
1275 1280 Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S
1276 1281 Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D
1277 1282 Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S
1278 1283 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1279 1284 Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
1280 1285 -4:00 Halifax A%sT 1918
1281 1286 -4:00 Canada A%sT 1919
1282 1287 -4:00 Halifax A%sT 1942 Feb 9 2:00s
1283 1288 -4:00 Canada A%sT 1946
1284 1289 -4:00 Halifax A%sT 1974
1285 1290 -4:00 Canada A%sT
1286 1291 Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
1287 1292 -4:00 Canada A%sT 1953
1288 1293 -4:00 Halifax A%sT 1954
1289 1294 -4:00 - AST 1972
1290 1295 -4:00 Halifax A%sT 1974
1291 1296 -4:00 Canada A%sT
1292 1297
1293 1298 # New Brunswick
1294 1299
1295 1300 # From Paul Eggert (2007-01-31):
1296 1301 # The Time Definition Act <http://www.gnb.ca/0062/PDF-acts/t-06.pdf>
1297 1302 # says they changed at 00:01 through 2006, and
1298 1303 # <http://www.canlii.org/nb/laws/sta/t-6/20030127/whole.html> makes it
1299 1304 # clear that this was the case since at least 1993.
1300 1305 # For now, assume it started in 1993.
1301 1306
1302 1307 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1303 1308 Rule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D
1304 1309 Rule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S
1305 1310 Rule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D
1306 1311 Rule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S
1307 1312 Rule Moncton 1939 only - May 27 1:00 1:00 D
1308 1313 Rule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S
1309 1314 Rule Moncton 1940 only - May 19 1:00 1:00 D
1310 1315 Rule Moncton 1941 only - May 4 1:00 1:00 D
1311 1316 Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D
1312 1317 Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
1313 1318 Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
1314 1319 Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
1315 1320 Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
1316 1321 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1317 1322 Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
1318 1323 -5:00 - EST 1902 Jun 15
1319 1324 -4:00 Canada A%sT 1933
1320 1325 -4:00 Moncton A%sT 1942
1321 1326 -4:00 Canada A%sT 1946
1322 1327 -4:00 Moncton A%sT 1973
1323 1328 -4:00 Canada A%sT 1993
1324 1329 -4:00 Moncton A%sT 2007
1325 1330 -4:00 Canada A%sT
1326 1331
1327 1332 # Quebec
1328 1333
1329 1334 # From Paul Eggert (2013-08-30):
1330 1335 # Since 1970 most of Quebec has been like Toronto.
1331 1336 # However, because earlier versions of the tz database mistakenly relied on data
1332 1337 # from Shanks & Pottenger saying that Quebec differed from Ontario after 1970,
1333 1338 # a separate entry was created for most of Quebec. We're loath to lose
1334 1339 # its pre-1970 info, even though the tz database is normally limited to
1335 1340 # zones that differ after 1970, so keep this otherwise out-of-scope entry.
1336 1341
1337 1342 # Matthews and Vincent (1998) also write that Quebec east of the -63
1338 1343 # meridian is supposed to observe AST, but residents as far east as
1339 1344 # Natashquan use EST/EDT, and residents east of Natashquan use AST.
1340 1345 # The Quebec department of justice writes in
1341 1346 # "The situation in Minganie and Basse-Côte-Nord"
1342 1347 # http://www.justice.gouv.qc.ca/english/publications/generale/temps-minganie-a.htm
1343 1348 # that the coastal strip from just east of Natashquan to Blanc-Sablon
1344 1349 # observes Atlantic standard time all year round.
1345 1350 # http://www.assnat.qc.ca/Media/Process.aspx?MediaId=ANQ.Vigie.Bll.DocumentGenerique_8845en
1346 1351 # says this common practice was codified into law as of 2007.
1347 1352 # For lack of better info, guess this practice began around 1970, contra to
1348 1353 # Shanks & Pottenger who have this region observing AST/ADT.
1349 1354
1350 1355 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1351 1356 Rule Mont 1917 only - Mar 25 2:00 1:00 D
1352 1357 Rule Mont 1917 only - Apr 24 0:00 0 S
1353 1358 Rule Mont 1919 only - Mar 31 2:30 1:00 D
1354 1359 Rule Mont 1919 only - Oct 25 2:30 0 S
1355 1360 Rule Mont 1920 only - May 2 2:30 1:00 D
1356 1361 Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S
1357 1362 Rule Mont 1921 only - May 1 2:00 1:00 D
1358 1363 Rule Mont 1922 only - Apr 30 2:00 1:00 D
1359 1364 Rule Mont 1924 only - May 17 2:00 1:00 D
1360 1365 Rule Mont 1924 1926 - Sep lastSun 2:30 0 S
1361 1366 Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D
1362 1367 Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D
1363 1368 Rule Mont 1927 1937 - Sep lastSat 24:00 0 S
1364 1369 Rule Mont 1938 1940 - Apr lastSun 0:00 1:00 D
1365 1370 Rule Mont 1938 1939 - Sep lastSun 0:00 0 S
1366 1371 Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D
1367 1372 Rule Mont 1945 1948 - Sep lastSun 2:00 0 S
1368 1373 Rule Mont 1949 1950 - Oct lastSun 2:00 0 S
1369 1374 Rule Mont 1951 1956 - Sep lastSun 2:00 0 S
1370 1375 Rule Mont 1957 1973 - Oct lastSun 2:00 0 S
1371 1376
1372 1377 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1373 1378 Zone America/Blanc-Sablon -3:48:28 - LMT 1884
1374 1379 -4:00 Canada A%sT 1970
1375 1380 -4:00 - AST
1376 1381 Zone America/Montreal -4:54:16 - LMT 1884
1377 1382 -5:00 Mont E%sT 1918
1378 1383 -5:00 Canada E%sT 1919
1379 1384 -5:00 Mont E%sT 1942 Feb 9 2:00s
1380 1385 -5:00 Canada E%sT 1946
1381 1386 -5:00 Mont E%sT 1974
1382 1387 -5:00 Canada E%sT
1383 1388
1384 1389 # Ontario
1385 1390
1386 1391 # From Paul Eggert (2006-07-09):
1387 1392 # Shanks & Pottenger write that since 1970 most of Ontario has been like
1388 1393 # Toronto.
1389 1394 # Thunder Bay skipped DST in 1973.
1390 1395 # Many smaller locales did not observe peacetime DST until 1974;
1391 1396 # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1392 1397 # Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
1393 1398
1394 1399 # From Mark Brader (2003-07-26):
1395 1400 # [According to the Toronto Star] Orillia, Ontario, adopted DST
1396 1401 # effective Saturday, 1912-06-22, 22:00; the article mentions that
1397 1402 # Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
1398 1403 # have already done so. In Orillia DST was to run until Saturday,
1399 1404 # 1912-08-31 (no time mentioned), but it was met with considerable
1400 1405 # hostility from certain segments of the public, and was revoked after
1401 1406 # only two weeks - I copied it as Saturday, 1912-07-07, 22:00, but
1402 1407 # presumably that should be -07-06. (1912-06-19, -07-12; also letters
1403 1408 # earlier in June).
1404 1409 #
1405 1410 # Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
1406 1411
1407 1412 # From Paul Eggert (1997-10-17):
1408 1413 # Mark Brader writes that an article in the 1997-10-14 Toronto Star
1409 1414 # says that Atikokan, Ontario currently does not observe DST,
1410 1415 # but will vote on 11-10 whether to use EST/EDT.
1411 1416 # He also writes that the Ontario Time Act (1990, Chapter T.9)
1412 1417 # http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html
1413 1418 # says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
1414 1419 # Officially Atikokan is therefore on CST/CDT, and most likely this report
1415 1420 # concerns a non-official time observed as a matter of local practice.
1416 1421 #
1417 1422 # From Paul Eggert (2000-10-02):
1418 1423 # Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and
1419 1424 # New Osnaburgh observe CST all year, that Big Trout Lake observes
1420 1425 # CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in
1421 1426 # violation of the official Ontario rules.
1422 1427 #
1423 1428 # From Paul Eggert (2006-07-09):
1424 1429 # Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the
1425 1430 # 2005-07-21 Chronicle-Journal, which said:
1426 1431 #
1427 1432 # The clocks in Atikokan stay set on standard time year-round.
1428 1433 # This means they spend about half the time on central time and
1429 1434 # the other half on eastern time.
1430 1435 #
1431 1436 # For the most part, the system works, Mayor Dennis Brown said.
1432 1437 #
1433 1438 # "The majority of businesses in Atikokan deal more with Eastern
1434 1439 # Canada, but there are some that deal with Western Canada," he
1435 1440 # said. "I don't see any changes happening here."
1436 1441 #
1437 1442 # Walton also writes "Supposedly Pickle Lake and Mishkeegogamang
1438 1443 # [New Osnaburgh] follow the same practice."
1439 1444
1440 1445 # From Garry McKinnon (2006-07-14) via Chris Walton:
1441 1446 # I chatted with a member of my board who has an outstanding memory
1442 1447 # and a long history in Atikokan (and in the telecom industry) and he
1443 1448 # can say for certain that Atikokan has been practicing the current
1444 1449 # time keeping since 1952, at least.
1445 1450
1446 1451 # From Paul Eggert (2006-07-17):
1447 1452 # Shanks & Pottenger say that Atikokan has agreed with Rainy River
1448 1453 # ever since standard time was introduced, but the information from
1449 1454 # McKinnon sounds more authoritative. For now, assume that Atikokan
1450 1455 # switched to EST immediately after WWII era daylight saving time
1451 1456 # ended. This matches the old (less-populous) America/Coral_Harbour
1452 1457 # entry since our cutoff date of 1970, so we can move
1453 1458 # America/Coral_Harbour to the 'backward' file.
1454 1459
1455 1460 # From Mark Brader (2010-03-06):
1456 1461 #
1457 1462 # Currently the database has:
1458 1463 #
1459 1464 # # Ontario
1460 1465 #
1461 1466 # # From Paul Eggert (2006-07-09):
1462 1467 # # Shanks & Pottenger write that since 1970 most of Ontario has been like
1463 1468 # # Toronto.
1464 1469 # # Thunder Bay skipped DST in 1973.
1465 1470 # # Many smaller locales did not observe peacetime DST until 1974;
1466 1471 # # Nipigon (EST) and Rainy River (CST) are the largest that we know of.
1467 1472 #
1468 1473 # In the (Toronto) Globe and Mail for Saturday, 1955-09-24, in the bottom
1469 1474 # right corner of page 1, it says that Toronto will return to standard
1470 1475 # time at 2 am Sunday morning (which agrees with the database), and that:
1471 1476 #
1472 1477 # The one-hour setback will go into effect throughout most of Ontario,
1473 1478 # except in areas like Windsor which remains on standard time all year.
1474 1479 #
1475 1480 # Windsor is, of course, a lot larger than Nipigon.
1476 1481 #
1477 1482 # I only came across this incidentally. I don't know if Windsor began
1478 1483 # observing DST when Detroit did, or in 1974, or on some other date.
1479 1484 #
1480 1485 # By the way, the article continues by noting that:
1481 1486 #
1482 1487 # Some cities in the United States have pushed the deadline back
1483 1488 # three weeks and will change over from daylight saving in October.
1484 1489
1485 1490 # From Arthur David Olson (2010-07-17):
1486 1491 #
1487 1492 # "Standard Time and Time Zones in Canada" appeared in
1488 1493 # The Journal of The Royal Astronomical Society of Canada,
1489 1494 # volume 26, number 2 (February 1932) and, as of 2010-07-17,
1490 1495 # was available at
1491 1496 # http://adsabs.harvard.edu/full/1932JRASC..26...49S
1492 1497 #
1493 1498 # It includes the text below (starting on page 57):
1494 1499 #
1495 1500 # A list of the places in Canada using daylight saving time would
1496 1501 # require yearly revision. From information kindly furnished by
1497 1502 # the provincial governments and by the postmasters in many cities
1498 1503 # and towns, it is found that the following places used daylight sav-
1499 1504 # ing in 1930. The information for the province of Quebec is definite,
1500 1505 # for the other provinces only approximate:
1501 1506 #
1502 1507 # Province Daylight saving time used
1503 1508 # Prince Edward Island Not used.
1504 1509 # Nova Scotia In Halifax only.
1505 1510 # New Brunswick In St. John only.
1506 1511 # Quebec In the following places:
1507 1512 # Montreal Lachine
1508 1513 # Quebec Mont-Royal
1509 1514 # Lévis Iberville
1510 1515 # St. Lambert Cap de la Madelèine
1511 1516 # Verdun Loretteville
1512 1517 # Westmount Richmond
1513 1518 # Outremont St. Jérôme
1514 1519 # Longueuil Greenfield Park
1515 1520 # Arvida Waterloo
1516 1521 # Chambly-Canton Beaulieu
1517 1522 # Melbourne La Tuque
1518 1523 # St. Théophile Buckingham
1519 1524 # Ontario Used generally in the cities and towns along
1520 1525 # the southerly part of the province. Not
1521 1526 # used in the northwesterly part.
1522 1527 # Manitoba Not used.
1523 1528 # Saskatchewan In Regina only.
1524 1529 # Alberta Not used.
1525 1530 # British Columbia Not used.
1526 1531 #
1527 1532 # With some exceptions, the use of daylight saving may be said to be limited
1528 1533 # to those cities and towns lying between Quebec city and Windsor, Ont.
1529 1534
1530 1535 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1531 1536 Rule Toronto 1919 only - Mar 30 23:30 1:00 D
1532 1537 Rule Toronto 1919 only - Oct 26 0:00 0 S
1533 1538 Rule Toronto 1920 only - May 2 2:00 1:00 D
1534 1539 Rule Toronto 1920 only - Sep 26 0:00 0 S
1535 1540 Rule Toronto 1921 only - May 15 2:00 1:00 D
1536 1541 Rule Toronto 1921 only - Sep 15 2:00 0 S
1537 1542 Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D
1538 1543 # Shanks & Pottenger say 1923-09-19; assume it's a typo and that "-16"
1539 1544 # was meant.
1540 1545 Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S
1541 1546 Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D
1542 1547 # The 1927-to-1939 rules can be expressed more simply as
1543 1548 # Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S
1544 1549 # Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D
1545 1550 # Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D
1546 1551 # Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S
1547 1552 # The rules below avoid use of Sun>=25
1548 1553 # (which pre-2004 versions of zic cannot handle).
1549 1554 Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S
1550 1555 Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D
1551 1556 Rule Toronto 1932 only - May 1 2:00 1:00 D
1552 1557 Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D
1553 1558 Rule Toronto 1933 only - Oct 1 2:00 0 S
1554 1559 Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S
1555 1560 Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S
1556 1561 Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D
1557 1562 Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D
1558 1563 Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S
1559 1564 Rule Toronto 1949 only - Nov lastSun 0:00 0 S
1560 1565 Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D
1561 1566 Rule Toronto 1950 only - Nov lastSun 2:00 0 S
1562 1567 Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S
1563 1568 # Shanks & Pottenger say Toronto ended DST a week early in 1971,
1564 1569 # namely on 1971-10-24, but Mark Brader wrote (2003-05-31) that this
1565 1570 # is wrong, and that he had confirmed it by checking the 1971-10-30
1566 1571 # Toronto Star, which said that DST was ending 1971-10-31 as usual.
1567 1572 Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
1568 1573
1569 1574 # From Paul Eggert (2003-07-27):
1570 1575 # Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and
1571 1576 # Port Arthur, Ontario, the principle of the Bill has been in
1572 1577 # operation for the past three years, and in the City of Moose Jaw,
1573 1578 # Saskatchewan, for one year."
1574 1579
1575 1580 # From David Bryan via Tory Tronrud, Director/Curator,
1576 1581 # Thunder Bay Museum (2003-11-12):
1577 1582 # There is some suggestion, however, that, by-law or not, daylight
1578 1583 # savings time was being practiced in Fort William and Port Arthur
1579 1584 # before 1909.... [I]n 1910, the line between the Eastern and Central
1580 1585 # Time Zones was permanently moved about two hundred miles west to
1581 1586 # include the Thunder Bay area.... When Canada adopted daylight
1582 1587 # savings time in 1916, Fort William and Port Arthur, having done so
1583 1588 # already, did not change their clocks.... During the Second World
1584 1589 # War,... [t]he cities agreed to implement DST during the summer
1585 1590 # months for the remainder of the war years.
1586 1591
1587 1592 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1588 1593 Zone America/Toronto -5:17:32 - LMT 1895
1589 1594 -5:00 Canada E%sT 1919
1590 1595 -5:00 Toronto E%sT 1942 Feb 9 2:00s
1591 1596 -5:00 Canada E%sT 1946
1592 1597 -5:00 Toronto E%sT 1974
1593 1598 -5:00 Canada E%sT
1594 1599 Zone America/Thunder_Bay -5:57:00 - LMT 1895
1595 1600 -6:00 - CST 1910
1596 1601 -5:00 - EST 1942
1597 1602 -5:00 Canada E%sT 1970
1598 1603 -5:00 Toronto E%sT 1973
1599 1604 -5:00 - EST 1974
1600 1605 -5:00 Canada E%sT
1601 1606 Zone America/Nipigon -5:53:04 - LMT 1895
1602 1607 -5:00 Canada E%sT 1940 Sep 29
1603 1608 -5:00 1:00 EDT 1942 Feb 9 2:00s
1604 1609 -5:00 Canada E%sT
1605 1610 Zone America/Rainy_River -6:18:16 - LMT 1895
1606 1611 -6:00 Canada C%sT 1940 Sep 29
1607 1612 -6:00 1:00 CDT 1942 Feb 9 2:00s
1608 1613 -6:00 Canada C%sT
1609 1614 Zone America/Atikokan -6:06:28 - LMT 1895
1610 1615 -6:00 Canada C%sT 1940 Sep 29
1611 1616 -6:00 1:00 CDT 1942 Feb 9 2:00s
1612 1617 -6:00 Canada C%sT 1945 Sep 30 2:00
1613 1618 -5:00 - EST
1614 1619
1615 1620
1616 1621 # Manitoba
1617 1622
1618 1623 # From Rob Douglas (2006-04-06):
1619 1624 # the old Manitoba Time Act - as amended by Bill 2, assented to
1620 1625 # March 27, 1987 ... said ...
1621 1626 # "between two o'clock Central Standard Time in the morning of
1622 1627 # the first Sunday of April of each year and two o'clock Central
1623 1628 # Standard Time in the morning of the last Sunday of October next
1624 1629 # following, one hour in advance of Central Standard Time."...
1625 1630 # I believe that the English legislation [of the old time act] had
1626 1631 # been assented to (March 22, 1967)....
1627 1632 # Also, as far as I can tell, there was no order-in-council varying
1628 1633 # the time of Daylight Saving Time for 2005 and so the provisions of
1629 1634 # the 1987 version would apply - the changeover was at 2:00 Central
1630 1635 # Standard Time (i.e. not until 3:00 Central Daylight Time).
1631 1636
1632 1637 # From Paul Eggert (2006-04-10):
1633 1638 # Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s)
1634 1639 # starting 1966. Since 02:00s is clearly correct for 1967 on, assume
1635 1640 # it was also 02:00s in 1966.
1636 1641
1637 1642 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1638 1643 Rule Winn 1916 only - Apr 23 0:00 1:00 D
1639 1644 Rule Winn 1916 only - Sep 17 0:00 0 S
1640 1645 Rule Winn 1918 only - Apr 14 2:00 1:00 D
1641 1646 Rule Winn 1918 only - Oct 27 2:00 0 S
1642 1647 Rule Winn 1937 only - May 16 2:00 1:00 D
1643 1648 Rule Winn 1937 only - Sep 26 2:00 0 S
1644 1649 Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
1645 1650 Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
1646 1651 Rule Winn 1945 only - Sep lastSun 2:00 0 S
1647 1652 Rule Winn 1946 only - May 12 2:00 1:00 D
1648 1653 Rule Winn 1946 only - Oct 13 2:00 0 S
1649 1654 Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D
1650 1655 Rule Winn 1947 1949 - Sep lastSun 2:00 0 S
1651 1656 Rule Winn 1950 only - May 1 2:00 1:00 D
1652 1657 Rule Winn 1950 only - Sep 30 2:00 0 S
1653 1658 Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D
1654 1659 Rule Winn 1951 1958 - Sep lastSun 2:00 0 S
1655 1660 Rule Winn 1959 only - Oct lastSun 2:00 0 S
1656 1661 Rule Winn 1960 only - Sep lastSun 2:00 0 S
1657 1662 Rule Winn 1963 only - Apr lastSun 2:00 1:00 D
1658 1663 Rule Winn 1963 only - Sep 22 2:00 0 S
1659 1664 Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D
1660 1665 Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S
1661 1666 Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D
1662 1667 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1663 1668 Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
1664 1669 -6:00 Winn C%sT 2006
1665 1670 -6:00 Canada C%sT
1666 1671
1667 1672
1668 1673 # Saskatchewan
1669 1674
1670 1675 # From Mark Brader (2003-07-26):
1671 1676 # The first actual adoption of DST in Canada was at the municipal
1672 1677 # level. As the [Toronto] Star put it (1912-06-07), "While people
1673 1678 # elsewhere have long been talking of legislation to save daylight,
1674 1679 # the city of Moose Jaw [Saskatchewan] has acted on its own hook."
1675 1680 # DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned:
1676 1681 # presumably late evening, as below), and would run until "the end of
1677 1682 # the summer". The discrepancy between municipal time and railroad
1678 1683 # time was noted.
1679 1684
1680 1685 # From Paul Eggert (2003-07-27):
1681 1686 # Willett (1914-03) notes that DST "has been in operation ... in the
1682 1687 # City of Moose Jaw, Saskatchewan, for one year."
1683 1688
1684 1689 # From Paul Eggert (2006-03-22):
1685 1690 # Shanks & Pottenger say that since 1970 this region has mostly been as Regina.
1686 1691 # Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
1687 1692 # Other western towns (e.g. Lloydminster) are like Edmonton.
1688 1693 # Matthews and Vincent (1998) write that Denare Beach and Creighton
1689 1694 # are like Winnipeg, in violation of Saskatchewan law.
1690 1695
1691 1696 # From W. Jones (1992-11-06):
1692 1697 # The. . .below is based on information I got from our law library, the
1693 1698 # provincial archives, and the provincial Community Services department.
1694 1699 # A precise history would require digging through newspaper archives, and
1695 1700 # since you didn't say what you wanted, I didn't bother.
1696 1701 #
1697 1702 # Saskatchewan is split by a time zone meridian (105W) and over the years
1698 1703 # the boundary became pretty ragged as communities near it reevaluated
1699 1704 # their affiliations in one direction or the other. In 1965 a provincial
1700 1705 # referendum favoured legislating common time practices.
1701 1706 #
1702 1707 # On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
1703 1708 # Saskatchewan 1978) was proclaimed, and established that the eastern
1704 1709 # part of Saskatchewan would use CST year round, that districts in
1705 1710 # northwest Saskatchewan would by default follow CST but could opt to
1706 1711 # follow Mountain Time rules (thus 1 hour difference in the winter and
1707 1712 # zero in the summer), and that districts in southwest Saskatchewan would
1708 1713 # by default follow MT but could opt to follow CST.
1709 1714 #
1710 1715 # It took a few years for the dust to settle (I know one story of a town
1711 1716 # on one time zone having its school in another, such that a mom had to
1712 1717 # serve her family lunch in two shifts), but presently it seems that only
1713 1718 # a few towns on the border with Alberta (e.g. Lloydminster) follow MT
1714 1719 # rules any more; all other districts appear to have used CST year round
1715 1720 # since sometime in the 1960s.
1716 1721
1717 1722 # From Chris Walton (2006-06-26):
1718 1723 # The Saskatchewan time act which was last updated in 1996 is about 30 pages
1719 1724 # long and rather painful to read.
1720 1725 # http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf
1721 1726
1722 1727 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1723 1728 Rule Regina 1918 only - Apr 14 2:00 1:00 D
1724 1729 Rule Regina 1918 only - Oct 27 2:00 0 S
1725 1730 Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
1726 1731 Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
1727 1732 Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
1728 1733 Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
1729 1734 Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
1730 1735 Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
1731 1736 Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
1732 1737 Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace
1733 1738 Rule Regina 1945 only - Sep lastSun 2:00 0 S
1734 1739 Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
1735 1740 Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
1736 1741 Rule Regina 1947 1957 - Apr lastSun 2:00 1:00 D
1737 1742 Rule Regina 1947 1957 - Sep lastSun 2:00 0 S
1738 1743 Rule Regina 1959 only - Apr lastSun 2:00 1:00 D
1739 1744 Rule Regina 1959 only - Oct lastSun 2:00 0 S
1740 1745 #
1741 1746 Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
1742 1747 Rule Swift 1957 only - Oct lastSun 2:00 0 S
1743 1748 Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
1744 1749 Rule Swift 1959 only - Oct lastSun 2:00 0 S
1745 1750 Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
1746 1751 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1747 1752 Zone America/Regina -6:58:36 - LMT 1905 Sep
1748 1753 -7:00 Regina M%sT 1960 Apr lastSun 2:00
1749 1754 -6:00 - CST
1750 1755 Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
1751 1756 -7:00 Canada M%sT 1946 Apr lastSun 2:00
1752 1757 -7:00 Regina M%sT 1950
1753 1758 -7:00 Swift M%sT 1972 Apr lastSun 2:00
1754 1759 -6:00 - CST
1755 1760
1756 1761
1757 1762 # Alberta
1758 1763
1759 1764 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1760 1765 Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
1761 1766 Rule Edm 1918 only - Oct 27 2:00 0 S
1762 1767 Rule Edm 1919 only - May 27 2:00 0 S
1763 1768 Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
1764 1769 Rule Edm 1920 only - Oct lastSun 2:00 0 S
1765 1770 Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
1766 1771 Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
1767 1772 Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
1768 1773 Rule Edm 1945 only - Sep lastSun 2:00 0 S
1769 1774 Rule Edm 1947 only - Apr lastSun 2:00 1:00 D
1770 1775 Rule Edm 1947 only - Sep lastSun 2:00 0 S
1771 1776 Rule Edm 1967 only - Apr lastSun 2:00 1:00 D
1772 1777 Rule Edm 1967 only - Oct lastSun 2:00 0 S
1773 1778 Rule Edm 1969 only - Apr lastSun 2:00 1:00 D
1774 1779 Rule Edm 1969 only - Oct lastSun 2:00 0 S
1775 1780 Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
1776 1781 Rule Edm 1972 2006 - Oct lastSun 2:00 0 S
1777 1782 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1778 1783 Zone America/Edmonton -7:33:52 - LMT 1906 Sep
1779 1784 -7:00 Edm M%sT 1987
1780 1785 -7:00 Canada M%sT
1781 1786
1782 1787
1783 1788 # British Columbia
1784 1789
1785 1790 # From Paul Eggert (2006-03-22):
1786 1791 # Shanks & Pottenger write that since 1970 most of this region has
1787 1792 # been like Vancouver.
1788 1793 # Dawson Creek uses MST. Much of east BC is like Edmonton.
1789 1794 # Matthews and Vincent (1998) write that Creston is like Dawson Creek.
1790 1795
1791 1796 # It seems though that (re: Creston) is not entirely correct:
1792 1797
1793 1798 # From Chris Walton (2011-12-01):
1794 1799 # There are two areas within the Canadian province of British Columbia
1795 1800 # that do not currently observe daylight saving:
1796 1801 # a) The Creston Valley (includes the town of Creston and surrounding area)
1797 1802 # b) The eastern half of the Peace River Regional District
1798 1803 # (includes the cities of Dawson Creek and Fort St. John)
1799 1804
1800 1805 # Earlier this year I stumbled across a detailed article about the time
1801 1806 # keeping history of Creston; it was written by Tammy Hardwick who is the
1802 1807 # manager of the Creston & District Museum. The article was written in May 2009.
1803 1808 # http://www.ilovecreston.com/?p=articles&t=spec&ar=260
1804 1809 # According to the article, Creston has not changed its clocks since June 1918.
1805 1810 # i.e. Creston has been stuck on UTC-7 for 93 years.
1806 1811 # Dawson Creek, on the other hand, changed its clocks as recently as April 1972.
1807 1812
1808 1813 # Unfortunately the exact date for the time change in June 1918 remains
1809 1814 # unknown and will be difficult to ascertain. I e-mailed Tammy a few months
1810 1815 # ago to ask if Sunday June 2 was a reasonable guess. She said it was just
1811 1816 # as plausible as any other date (in June). She also said that after writing
1812 1817 # the article she had discovered another time change in 1916; this is the
1813 1818 # subject of another article which she wrote in October 2010.
1814 1819 # http://www.creston.museum.bc.ca/index.php?module=comments&uop=view_comment&cm+id=56
1815 1820
1816 1821 # Here is a summary of the three clock change events in Creston's history:
1817 1822 # 1. 1884 or 1885: adoption of Mountain Standard Time (GMT-7)
1818 1823 # Exact date unknown
1819 1824 # 2. Oct 1916: switch to Pacific Standard Time (GMT-8)
1820 1825 # Exact date in October unknown; Sunday October 1 is a reasonable guess.
1821 1826 # 3. June 1918: switch to Pacific Daylight Time (GMT-7)
1822 1827 # Exact date in June unknown; Sunday June 2 is a reasonable guess.
1823 1828 # note#1:
1824 1829 # On Oct 27/1918 when daylight saving ended in the rest of Canada,
1825 1830 # Creston did not change its clocks.
1826 1831 # note#2:
1827 1832 # During WWII when the Federal Government legislated a mandatory clock change,
1828 1833 # Creston did not oblige.
1829 1834 # note#3:
1830 1835 # There is no guarantee that Creston will remain on Mountain Standard Time
1831 1836 # (UTC-7) forever.
1832 1837 # The subject was debated at least once this year by the town Council.
1833 1838 # http://www.bclocalnews.com/kootenay_rockies/crestonvalleyadvance/news/116760809.html
1834 1839
1835 1840 # During a period WWII, summer time (Daylight saying) was mandatory in Canada.
1836 1841 # In Creston, that was handled by shifting the area to PST (-8:00) then applying
1837 1842 # summer time to cause the offset to be -7:00, the same as it had been before
1838 1843 # the change. It can be argued that the timezone abbreviation during this
1839 1844 # period should be PDT rather than MST, but that doesn't seem important enough
1840 1845 # (to anyone) to further complicate the rules.
1841 1846
1842 1847 # The transition dates (and times) are guesses.
1843 1848
1844 1849 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1845 1850 Rule Vanc 1918 only - Apr 14 2:00 1:00 D
1846 1851 Rule Vanc 1918 only - Oct 27 2:00 0 S
1847 1852 Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
1848 1853 Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
1849 1854 Rule Vanc 1945 only - Sep 30 2:00 0 S
1850 1855 Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
1851 1856 Rule Vanc 1946 only - Oct 13 2:00 0 S
1852 1857 Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
1853 1858 Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
1854 1859 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1855 1860 Zone America/Vancouver -8:12:28 - LMT 1884
1856 1861 -8:00 Vanc P%sT 1987
1857 1862 -8:00 Canada P%sT
1858 1863 Zone America/Dawson_Creek -8:00:56 - LMT 1884
1859 1864 -8:00 Canada P%sT 1947
1860 1865 -8:00 Vanc P%sT 1972 Aug 30 2:00
1861 1866 -7:00 - MST
1862 1867 Zone America/Creston -7:46:04 - LMT 1884
1863 1868 -7:00 - MST 1916 Oct 1
1864 1869 -8:00 - PST 1918 Jun 2
1865 1870 -7:00 - MST
1866 1871
1867 1872 # Northwest Territories, Nunavut, Yukon
1868 1873
1869 1874 # From Paul Eggert (2006-03-22):
1870 1875 # Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
1871 1876 # Mathew Englander (1996-10-07) gives the following refs:
1872 1877 # * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
1873 1878 # c. 7 defines Yukon standard time as UTC-9. This is still valid;
1874 1879 # see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).
1875 1880 # * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00.
1876 1881 # * O.I.C. 1980/02 established DST.
1877 1882 # * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
1878 1883 # Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go
1879 1884 # with Englander.
1880 1885 # From Chris Walton (2006-06-26):
1881 1886 # Here is a link to the old daylight saving portion of the interpretation
1882 1887 # act which was last updated in 1987:
1883 1888 # http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf
1884 1889
1885 1890 # From Rives McDow (1999-09-04):
1886 1891 # Nunavut ... moved ... to incorporate the whole territory into one time zone.
1887 1892 # Nunavut moves to single time zone Oct. 31
1888 1893 # http://www.nunatsiaq.com/nunavut/nvt90903_13.html
1889 1894 #
1890 1895 # From Antoine Leca (1999-09-06):
1891 1896 # We then need to create a new timezone for the Kitikmeot region of Nunavut
1892 1897 # to differentiate it from the Yellowknife region.
1893 1898
1894 1899 # From Paul Eggert (1999-09-20):
1895 1900 # Basic Facts: The New Territory
1896 1901 # http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html
1897 1902 # (1999) reports that Pangnirtung operates on eastern time,
1898 1903 # and that Coral Harbour does not observe DST. We don't know when
1899 1904 # Pangnirtung switched to eastern time; we'll guess 1995.
1900 1905
1901 1906 # From Rives McDow (1999-11-08):
1902 1907 # On October 31, when the rest of Nunavut went to Central time,
1903 1908 # Pangnirtung wobbled. Here is the result of their wobble:
1904 1909 #
1905 1910 # The following businesses and organizations in Pangnirtung use Central Time:
1906 1911 #
1907 1912 # First Air, Power Corp, Nunavut Construction, Health Center, RCMP,
1908 1913 # Eastern Arctic National Parks, A & D Specialist
1909 1914 #
1910 1915 # The following businesses and organizations in Pangnirtung use Eastern Time:
1911 1916 #
1912 1917 # Hamlet office, All other businesses, Both schools, Airport operator
1913 1918 #
1914 1919 # This has made for an interesting situation there, which warranted the news.
1915 1920 # No one there that I spoke with seems concerned, or has plans to
1916 1921 # change the local methods of keeping time, as it evidently does not
1917 1922 # really interfere with any activities or make things difficult locally.
1918 1923 # They plan to celebrate New Year's turn-over twice, one hour apart,
1919 1924 # so it appears that the situation will last at least that long.
1920 1925 # The Nunavut Intergovernmental Affairs hopes that they will "come to
1921 1926 # their senses", but the locals evidently don't see any problem with
1922 1927 # the current state of affairs.
1923 1928
1924 1929 # From Michaela Rodrigue, writing in the
1925 1930 # Nunatsiaq News (1999-11-19):
1926 1931 # http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html
1927 1932 # Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
1928 1933 # central - or Nunavut time - for government offices, and eastern time
1929 1934 # for municipal offices and schools.... Igloolik [was similar but then]
1930 1935 # made the switch to central time on Saturday, Nov. 6.
1931 1936
1932 1937 # From Paul Eggert (2000-10-02):
1933 1938 # Matthews and Vincent (1998) say the following, but we lack histories
1934 1939 # for these potential new Zones.
1935 1940 #
1936 1941 # The Canadian Forces station at Alert uses Eastern Time while the
1937 1942 # handful of residents at the Eureka weather station [in the Central
1938 1943 # zone] skip daylight savings. Baffin Island, which is crossed by the
1939 1944 # Central, Eastern and Atlantic Time zones only uses Eastern Time.
1940 1945 # Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of
1941 1946 # Central Time and Southampton Island [in the Central zone] is not
1942 1947 # required to use daylight savings.
1943 1948
1944 1949 # From <http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html>
1945 1950 # Nunavut now has two time zones (2000-11-10):
1946 1951 # The Nunavut government would allow its employees in Kugluktuk and
1947 1952 # Cambridge Bay to operate on central time year-round, putting them
1948 1953 # one hour behind the rest of Nunavut for six months during the winter.
1949 1954 # At the end of October the two communities had rebelled against
1950 1955 # Nunavut's unified time zone, refusing to shift to eastern time with
1951 1956 # the rest of the territory for the winter. Cambridge Bay remained on
1952 1957 # central time, while Kugluktuk, even farther west, reverted to
1953 1958 # mountain time, which they had used before the advent of Nunavut's
1954 1959 # unified time zone in 1999.
1955 1960 #
1956 1961 # From Rives McDow (2001-01-20), quoting the Nunavut government:
1957 1962 # The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
1958 1963
1959 1964 # From Paul Eggert (2000-12-04):
1960 1965 # Let's just keep track of the official times for now.
1961 1966
1962 1967 # From Rives McDow (2001-03-07):
|
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1963 1968 # The premier of Nunavut has issued a ministerial statement advising
1964 1969 # that effective 2001-04-01, the territory of Nunavut will revert
1965 1970 # back to three time zones (mountain, central, and eastern). Of the
1966 1971 # cities in Nunavut, Coral Harbor is the only one that I know of that
1967 1972 # has said it will not observe dst, staying on EST year round. I'm
1968 1973 # checking for more info, and will get back to you if I come up with
1969 1974 # more.
1970 1975 # [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
1971 1976
1972 1977 # From Gwillim Law (2005-05-21):
1973 -# According to maps at
1974 -# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg
1975 -# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg
1976 -# (both dated 2003), and
1978 +# According to ...
1977 1979 # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
1978 1980 # (from a 1998 Canadian Geographic article), the de facto and de jure time
1979 1981 # for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
1980 1982 # round. Using Google, it's easy to find other websites that confirm this.
1981 1983 # I wasn't able to find how far back this time regimen goes, but since it
1982 1984 # predates the creation of Nunavut, it probably goes back many years....
1983 1985 # The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
1984 1986 #
1985 -# From Paul Eggert (2005-07-26):
1987 +# From Paul Eggert (2014-10-17):
1986 1988 # For lack of better information, assume that Southampton Island observed
1987 -# daylight saving only during wartime.
1989 +# daylight saving only during wartime. Gwillim Law's email also
1990 +# mentioned maps now maintained by National Research Council Canada;
1991 +# see above for an up-to-date link.
1988 1992
1989 1993 # From Chris Walton (2007-03-01):
1990 1994 # ... the community of Resolute (located on Cornwallis Island in
1991 1995 # Nunavut) moved from Central Time to Eastern Time last November.
1992 1996 # Basically the community did not change its clocks at the end of
1993 1997 # daylight saving....
1994 1998 # http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html
1995 1999
1996 2000 # From Chris Walton (2011-03-21):
1997 2001 # Back in 2007 I initiated the creation of a new "zone file" for Resolute
1998 2002 # Bay. Resolute Bay is a small community located about 900km north of
1999 2003 # the Arctic Circle. The zone file was required because Resolute Bay had
2000 2004 # decided to use UTC-5 instead of UTC-6 for the winter of 2006-2007.
2001 2005 #
2002 2006 # According to new information which I received last week, Resolute Bay
2003 2007 # went back to using UTC-6 in the winter of 2007-2008...
2004 2008 #
2005 2009 # On March 11/2007 most of Canada went onto daylight saving. On March
2006 2010 # 14/2007 I phoned the Resolute Bay hamlet office to do a "time check." I
2007 2011 # talked to somebody that was both knowledgeable and helpful. I was able
2008 2012 # to confirm that Resolute Bay was still operating on UTC-5. It was
2009 2013 # explained to me that Resolute Bay had been on the Eastern Time zone
2010 2014 # (EST) in the winter, and was now back on the Central Time zone (CDT).
2011 2015 # i.e. the time zone had changed twice in the last year but the clocks
2012 2016 # had not moved. The residents had to know which time zone they were in
2013 2017 # so they could follow the correct TV schedule...
2014 2018 #
2015 2019 # On Nov 02/2008 most of Canada went onto standard time. On Nov 03/2008 I
2016 2020 # phoned the Resolute Bay hamlet office...[D]ue to the challenging nature
2017 2021 # of the phone call, I decided to seek out an alternate source of
2018 2022 # information. I found an e-mail address for somebody by the name of
2019 2023 # Stephanie Adams whose job was listed as "Inns North Support Officer for
2020 2024 # Arctic Co-operatives." I was under the impression that Stephanie lived
2021 2025 # and worked in Resolute Bay...
2022 2026 #
2023 2027 # On March 14/2011 I phoned the hamlet office again. I was told that
2024 2028 # Resolute Bay had been using Central Standard Time over the winter of
2025 2029 # 2010-2011 and that the clocks had therefore been moved one hour ahead
2026 2030 # on March 13/2011. The person I talked to was aware that Resolute Bay
2027 2031 # had previously experimented with Eastern Standard Time but he could not
2028 2032 # tell me when the practice had stopped.
2029 2033 #
2030 2034 # On March 17/2011 I searched the Web to find an e-mail address of
2031 2035 # somebody that might be able to tell me exactly when Resolute Bay went
2032 2036 # off Eastern Standard Time. I stumbled on the name "Aziz Kheraj." Aziz
2033 2037 # used to be the mayor of Resolute Bay and he apparently owns half the
2034 2038 # businesses including "South Camp Inn." This website has some info on
2035 2039 # Aziz:
2036 2040 # http://www.uphere.ca/node/493
2037 2041 #
2038 2042 # I sent Aziz an e-mail asking when Resolute Bay had stopped using
2039 2043 # Eastern Standard Time.
2040 2044 #
2041 2045 # Aziz responded quickly with this: "hi, The time was not changed for the
2042 2046 # 1 year only, the following year, the community went back to the old way
2043 2047 # of "spring ahead-fall behind" currently we are zulu plus 5 hrs and in
2044 2048 # the winter Zulu plus 6 hrs"
2045 2049 #
2046 2050 # This of course conflicted with everything I had ascertained in November 2008.
2047 2051 #
2048 2052 # I sent Aziz a copy of my 2008 e-mail exchange with Stephanie. Aziz
2049 2053 # responded with this: "Hi, Stephanie lives in Winnipeg. I live here, You
2050 2054 # may want to check with the weather office in Resolute Bay or do a
2051 2055 # search on the weather through Env. Canada. web site"
2052 2056 #
2053 2057 # If I had realized the Stephanie did not live in Resolute Bay I would
2054 2058 # never have contacted her. I now believe that all the information I
2055 2059 # obtained in November 2008 should be ignored...
2056 2060 # I apologize for reporting incorrect information in 2008.
2057 2061
2058 2062 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2059 2063 Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
2060 2064 Rule NT_YK 1918 only - Oct 27 2:00 0 S
2061 2065 Rule NT_YK 1919 only - May 25 2:00 1:00 D
2062 2066 Rule NT_YK 1919 only - Nov 1 0:00 0 S
2063 2067 Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
2064 2068 Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
2065 2069 Rule NT_YK 1945 only - Sep 30 2:00 0 S
2066 2070 Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
2067 2071 Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
2068 2072 Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
2069 2073 Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
2070 2074 Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
2071 2075 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2072 2076 # aka Panniqtuuq
2073 2077 Zone America/Pangnirtung 0 - zzz 1921 # trading post est.
2074 2078 -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
2075 2079 -5:00 Canada E%sT 1999 Oct 31 2:00
2076 2080 -6:00 Canada C%sT 2000 Oct 29 2:00
2077 2081 -5:00 Canada E%sT
2078 2082 # formerly Frobisher Bay
2079 2083 Zone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est.
2080 2084 -5:00 NT_YK E%sT 1999 Oct 31 2:00
2081 2085 -6:00 Canada C%sT 2000 Oct 29 2:00
2082 2086 -5:00 Canada E%sT
2083 2087 # aka Qausuittuq
2084 2088 Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded
2085 2089 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2086 2090 -5:00 - EST 2001 Apr 1 3:00
2087 2091 -6:00 Canada C%sT 2006 Oct 29 2:00
2088 2092 -5:00 - EST 2007 Mar 11 3:00
2089 2093 -6:00 Canada C%sT
2090 2094 # aka Kangiqiniq
2091 2095 Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded
2092 2096 -6:00 NT_YK C%sT 2000 Oct 29 2:00
2093 2097 -5:00 - EST 2001 Apr 1 3:00
2094 2098 -6:00 Canada C%sT
2095 2099 # aka Iqaluktuuttiaq
2096 2100 Zone America/Cambridge_Bay 0 - zzz 1920 # trading post est.?
2097 2101 -7:00 NT_YK M%sT 1999 Oct 31 2:00
2098 2102 -6:00 Canada C%sT 2000 Oct 29 2:00
2099 2103 -5:00 - EST 2000 Nov 5 0:00
2100 2104 -6:00 - CST 2001 Apr 1 3:00
2101 2105 -7:00 Canada M%sT
2102 2106 Zone America/Yellowknife 0 - zzz 1935 # Yellowknife founded?
2103 2107 -7:00 NT_YK M%sT 1980
2104 2108 -7:00 Canada M%sT
2105 2109 Zone America/Inuvik 0 - zzz 1953 # Inuvik founded
2106 2110 -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
2107 2111 -7:00 NT_YK M%sT 1980
2108 2112 -7:00 Canada M%sT
2109 2113 Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
2110 2114 -9:00 NT_YK Y%sT 1966 Jul 1 2:00
2111 2115 -8:00 NT_YK P%sT 1980
2112 2116 -8:00 Canada P%sT
|
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2113 2117 Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
2114 2118 -9:00 NT_YK Y%sT 1973 Oct 28 0:00
2115 2119 -8:00 NT_YK P%sT 1980
2116 2120 -8:00 Canada P%sT
2117 2121
2118 2122
2119 2123 ###############################################################################
2120 2124
2121 2125 # Mexico
2122 2126
2123 -# From Paul Eggert (2001-03-05):
2127 +# From Paul Eggert (2014-12-07):
2124 2128 # The Investigation and Analysis Service of the
2125 2129 # Mexican Library of Congress (MLoC) has published a
2126 2130 # history of Mexican local time (in Spanish)
2127 -# http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/
2131 +# http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
2128 2132 #
2129 2133 # Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2130 2134 # (In all cases we go with the MLoC.)
2131 2135 # S&P report that Baja was at -8:00 in 1922/1923.
2132 2136 # S&P say the 1930 transition in Baja was 1930-11-16.
2133 2137 # S&P report no DST during summer 1931.
2134 2138 # S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2135 2139
2136 2140 # From Gwillim Law (2001-02-20):
2137 2141 # There are some other discrepancies between the Decrees page and the
2138 2142 # tz database. I think they can best be explained by supposing that
2139 2143 # the researchers who prepared the Decrees page failed to find some of
2140 2144 # the relevant documents.
2141 2145
2142 2146 # From Alan Perry (1996-02-15):
2143 2147 # A guy from our Mexico subsidiary finally found the Presidential Decree
2144 2148 # outlining the timezone changes in Mexico.
2145 2149 #
2146 2150 # ------------- Begin Forwarded Message -------------
2147 2151 #
2148 2152 # I finally got my hands on the Official Presidential Decree that sets up the
2149 2153 # rules for the DST changes. The rules are:
2150 2154 #
2151 2155 # 1. The country is divided in 3 timezones:
2152 2156 # - Baja California Norte (the Mexico/BajaNorte TZ)
2153 2157 # - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ)
2154 2158 # - The rest of the country (the Mexico/General TZ)
2155 2159 #
2156 2160 # 2. From the first Sunday in April at 2:00 AM to the last Sunday in October
2157 2161 # at 2:00 AM, the times in each zone are as follows:
2158 2162 # BajaNorte: GMT+7
2159 2163 # BajaSur: GMT+6
2160 2164 # General: GMT+5
2161 2165 #
2162 2166 # 3. The rest of the year, the times are as follows:
2163 2167 # BajaNorte: GMT+8
2164 2168 # BajaSur: GMT+7
2165 2169 # General: GMT+6
2166 2170 #
2167 2171 # The Decree was published in Mexico's Official Newspaper on January 4th.
2168 2172 #
2169 2173 # -------------- End Forwarded Message --------------
2170 2174 # From Paul Eggert (1996-06-12):
2171 2175 # For an English translation of the decree, see
2172 2176 # "Diario Oficial: Time Zone Changeover" (1996-01-04).
2173 2177 # http://mexico-travel.com/extra/timezone_eng.html
2174 2178
2175 2179 # From Rives McDow (1998-10-08):
2176 2180 # The State of Quintana Roo has reverted back to central STD and DST times
2177 2181 # (i.e. UTC -0600 and -0500 as of 1998-08-02).
2178 2182
2179 2183 # From Rives McDow (2000-01-10):
2180 2184 # Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time
2181 2185 # zone 5 hours from the International Date Line, and will not observe daylight
2182 2186 # savings time so as to stay on the same time zone as the southern part of
2183 2187 # Arizona year round.
2184 2188
2185 2189 # From Jesper Nørgaard, translating
2186 2190 # <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17):
2187 2191 # In Oaxaca, the 55.000 teachers from the Section 22 of the National
2188 2192 # Syndicate of Education Workers, refuse to apply daylight saving each
2189 2193 # year, so that the more than 10,000 schools work at normal hour the
2190 2194 # whole year.
2191 2195
2192 2196 # From Gwillim Law (2001-01-19):
2193 2197 # <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says
2194 2198 # (translated):...
2195 2199 # January 17, 2000 - The Energy Secretary, Ernesto Martens, announced
2196 2200 # that Summer Time will be reduced from seven to five months, starting
2197 2201 # this year....
2198 2202 # http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001
2199 2203 # [translated], says "summer time will ... take effect on the first Sunday
2200 2204 # in May, and end on the last Sunday of September.
2201 2205
2202 2206 # From Arthur David Olson (2001-01-25):
2203 2207 # The 2001-01-24 traditional Washington Post contained the page one
2204 2208 # story "Timely Issue Divides Mexicans."...
2205 2209 # http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html
2206 2210 # ... Mexico City Mayor López Obrador "...is threatening to keep
2207 2211 # Mexico City and its 20 million residents on a different time than
2208 2212 # the rest of the country..." In particular, López Obrador would abolish
2209 2213 # observation of Daylight Saving Time.
2210 2214
2211 2215 # Official statute published by the Energy Department
2212 2216 # http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre
2213 2217 # (2001-02-01) shows Baja and Chihauhua as still using US DST rules,
2214 2218 # and Sonora with no DST. This was reported by Jesper Nørgaard (2001-02-03).
2215 2219
2216 2220 # From Paul Eggert (2001-03-03):
2217 2221 #
2218 2222 # http://www.latimes.com/news/nation/20010303/t000018766.html
2219 2223 # James F. Smith writes in today's LA Times
2220 2224 # * Sonora will continue to observe standard time.
2221 2225 # * Last week Mexico City's mayor Andrés Manuel López Obrador decreed that
2222 2226 # the Federal District will not adopt DST.
2223 2227 # * 4 of 16 district leaders announced they'll ignore the decree.
2224 2228 # * The decree does not affect federal-controlled facilities including
2225 2229 # the airport, banks, hospitals, and schools.
2226 2230 #
2227 2231 # For now we'll assume that the Federal District will bow to federal rules.
2228 2232
2229 2233 # From Jesper Nørgaard (2001-04-01):
2230 2234 # I found some references to the Mexican application of daylight
2231 2235 # saving, which modifies what I had already sent you, stating earlier
2232 2236 # that a number of northern Mexican states would go on daylight
2233 2237 # saving. The modification reverts this to only cover Baja California
2234 2238 # (Norte), while all other states (except Sonora, who has no daylight
2235 2239 # saving all year) will follow the original decree of president
2236 2240 # Vicente Fox, starting daylight saving May 6, 2001 and ending
2237 2241 # September 30, 2001.
2238 2242 # References: "Diario de Monterrey" <http://www.diariodemonterrey.com/index.asp>
2239 2243 # Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
2240 2244
2241 2245 # From Reuters (2001-09-04):
2242 2246 # Mexico's Supreme Court on Tuesday declared that daylight savings was
2243 2247 # unconstitutional in Mexico City, creating the possibility the
2244 2248 # capital will be in a different time zone from the rest of the nation
2245 2249 # next year.... The Supreme Court's ruling takes effect at 2:00
2246 2250 # a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to
2247 2251 # standard time. "This is so residents of the Federal District are not
2248 2252 # subject to unexpected time changes," a statement from the court said.
2249 2253
2250 2254 # From Jesper Nørgaard Welen (2002-03-12):
2251 2255 # ... consulting my local grocery store(!) and my coworkers, they all insisted
2252 2256 # that a new decision had been made to reinstate US style DST in Mexico....
2253 2257 # http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20)
2254 2258 # confirms this. Sonora as usual is the only state where DST is not applied.
2255 2259
2256 2260 # From Steffen Thorsen (2009-12-28):
2257 2261 #
2258 2262 # Steffen Thorsen wrote:
2259 2263 # > Mexico's House of Representatives has approved a proposal for northern
2260 2264 # > Mexico's border cities to share the same daylight saving schedule as
2261 2265 # > the United States.
2262 2266 # Now this has passed both the Congress and the Senate, so starting from
2263 2267 # 2010, some border regions will be the same:
2264 2268 # http://www.signonsandiego.com/news/2009/dec/28/clocks-will-match-both-sides-border/
2265 2269 # http://www.elmananarey.com/diario/noticia/nacional/noticias/empatan_horario_de_frontera_con_eu/621939
2266 2270 # (Spanish)
2267 2271 #
2268 2272 # Could not find the new law text, but the proposed law text changes are here:
2269 2273 # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/20091210-V.pdf
2270 2274 # (Gaceta Parlamentaria)
2271 2275 #
2272 2276 # There is also a list of the votes here:
2273 2277 # http://gaceta.diputados.gob.mx/Gaceta/61/2009/dic/V2-101209.html
2274 2278 #
2275 2279 # Our page:
2276 2280 # http://www.timeanddate.com/news/time/north-mexico-dst-change.html
2277 2281
2278 2282 # From Arthur David Olson (2010-01-20):
2279 2283 # The page
2280 2284 # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010
2281 2285 # includes this text:
2282 2286 # En los municipios fronterizos de Tijuana y Mexicali en Baja California;
2283 2287 # Juárez y Ojinaga en Chihuahua; Acuña y Piedras Negras en Coahuila;
2284 2288 # Anáhuac en Nuevo León; y Nuevo Laredo, Reynosa y Matamoros en
2285 2289 # Tamaulipas, la aplicación de este horario estacional surtirá efecto
|
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2286 2290 # desde las dos horas del segundo domingo de marzo y concluirá a las dos
2287 2291 # horas del primer domingo de noviembre.
2288 2292 # En los municipios fronterizos que se encuentren ubicados en la franja
2289 2293 # fronteriza norte en el territorio comprendido entre la línea
2290 2294 # internacional y la línea paralela ubicada a una distancia de veinte
2291 2295 # kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el
2292 2296 # interior del país, la aplicación de este horario estacional surtirá
2293 2297 # efecto desde las dos horas del segundo domingo de marzo y concluirá a
2294 2298 # las dos horas del primer domingo de noviembre.
2295 2299
2300 +# From Steffen Thorsen (2014-12-08), translated by Gwillim Law:
2301 +# The Mexican state of Quintana Roo will likely change to EST in 2015.
2302 +#
2303 +# http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo
2304 +# "With this change, the time conflict that has existed between the municipios
2305 +# of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an
2306 +# end. The latter declared itself in rebellion 15 years ago when a time change
2307 +# was initiated in Mexico, and since then it has refused to change its time
2308 +# zone along with the rest of the country."
2309 +#
2310 +# From Steffen Thorsen (2015-01-14), translated by Gwillim Law:
2311 +# http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html
2312 +# "...the new time zone will come into effect at two o'clock on the first Sunday
2313 +# of February, when we will have to advance the clock one hour from its current
2314 +# time..."
2315 +#
2316 +# Also, the new zone will not use DST.
2317 +
2296 2318 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2297 2319 Rule Mexico 1939 only - Feb 5 0:00 1:00 D
2298 2320 Rule Mexico 1939 only - Jun 25 0:00 0 S
2299 2321 Rule Mexico 1940 only - Dec 9 0:00 1:00 D
2300 2322 Rule Mexico 1941 only - Apr 1 0:00 0 S
2301 2323 Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
2302 2324 Rule Mexico 1944 only - May 1 0:00 0 S
2303 2325 Rule Mexico 1950 only - Feb 12 0:00 1:00 D
2304 2326 Rule Mexico 1950 only - Jul 30 0:00 0 S
2305 2327 Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
2306 2328 Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
2307 2329 Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
2308 2330 Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2309 2331 Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2310 2332 Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2311 2333 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2312 2334 # Quintana Roo; represented by Cancún
2313 2335 Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2314 2336 -6:00 - CST 1981 Dec 23
2315 2337 -5:00 Mexico E%sT 1998 Aug 2 2:00
2316 - -6:00 Mexico C%sT
2338 + -6:00 Mexico C%sT 2015 Feb 1 2:00
2339 + -5:00 - EST
2317 2340 # Campeche, Yucatán; represented by Mérida
2318 2341 Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2319 2342 -6:00 - CST 1981 Dec 23
2320 2343 -5:00 - EST 1982 Dec 2
2321 2344 -6:00 Mexico C%sT
2322 2345 # Coahuila, Durango, Nuevo León, Tamaulipas (near US border)
2323 2346 Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2324 2347 -6:00 - CST 1988
2325 2348 -6:00 US C%sT 1989
2326 2349 -6:00 Mexico C%sT 2010
2327 2350 -6:00 US C%sT
2328 2351 # Coahuila, Durango, Nuevo León, Tamaulipas (away from US border)
2329 2352 Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
2330 2353 -6:00 - CST 1988
2331 2354 -6:00 US C%sT 1989
2332 2355 -6:00 Mexico C%sT
2333 2356 # Central Mexico
2334 2357 Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
2335 2358 -7:00 - MST 1927 Jun 10 23:00
2336 2359 -6:00 - CST 1930 Nov 15
2337 2360 -7:00 - MST 1931 May 1 23:00
2338 2361 -6:00 - CST 1931 Oct
2339 2362 -7:00 - MST 1932 Apr 1
2340 2363 -6:00 Mexico C%sT 2001 Sep 30 2:00
2341 2364 -6:00 - CST 2002 Feb 20
2342 2365 -6:00 Mexico C%sT
2343 2366 # Chihuahua (near US border)
2344 2367 Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20
2345 2368 -7:00 - MST 1927 Jun 10 23:00
2346 2369 -6:00 - CST 1930 Nov 15
2347 2370 -7:00 - MST 1931 May 1 23:00
2348 2371 -6:00 - CST 1931 Oct
2349 2372 -7:00 - MST 1932 Apr 1
2350 2373 -6:00 - CST 1996
2351 2374 -6:00 Mexico C%sT 1998
2352 2375 -6:00 - CST 1998 Apr Sun>=1 3:00
2353 2376 -7:00 Mexico M%sT 2010
2354 2377 -7:00 US M%sT
2355 2378 # Chihuahua (away from US border)
2356 2379 Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
2357 2380 -7:00 - MST 1927 Jun 10 23:00
2358 2381 -6:00 - CST 1930 Nov 15
2359 2382 -7:00 - MST 1931 May 1 23:00
2360 2383 -6:00 - CST 1931 Oct
2361 2384 -7:00 - MST 1932 Apr 1
2362 2385 -6:00 - CST 1996
2363 2386 -6:00 Mexico C%sT 1998
2364 2387 -6:00 - CST 1998 Apr Sun>=1 3:00
2365 2388 -7:00 Mexico M%sT
2366 2389 # Sonora
2367 2390 Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08
2368 2391 -7:00 - MST 1927 Jun 10 23:00
2369 2392 -6:00 - CST 1930 Nov 15
2370 2393 -7:00 - MST 1931 May 1 23:00
2371 2394 -6:00 - CST 1931 Oct
2372 2395 -7:00 - MST 1932 Apr 1
2373 2396 -6:00 - CST 1942 Apr 24
2374 2397 -7:00 - MST 1949 Jan 14
2375 2398 -8:00 - PST 1970
2376 2399 -7:00 Mexico M%sT 1999
2377 2400 -7:00 - MST
2378 2401
2379 2402 # From Alexander Krivenyshev (2010-04-21):
2380 2403 # According to news, Bahía de Banderas (Mexican state of Nayarit)
2381 2404 # changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to
2382 2405 # share the same time zone as nearby city Puerto Vallarta, Jalisco).
2383 2406 #
2384 2407 # (Spanish)
2385 2408 # Bahía de Banderas homologa su horario al del centro del
2386 2409 # país, a partir de este domingo
2387 2410 # http://www.nayarit.gob.mx/notes.asp?id=20748
2388 2411 #
2389 2412 # Bahía de Banderas homologa su horario con el del Centro del
2390 2413 # País
2391 2414 # 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
2392 2415 #
2393 2416 # (English)
2394 2417 # Puerto Vallarta and Bahía de Banderas: One Time Zone
2395 2418 # http://virtualvallarta.com/puertovallarta/puertovallarta/localnews/2009-12-03-Puerto-Vallarta-and-Bahia-de-Banderas-One-Time-Zone.shtml
2396 2419 # http://www.worldtimezone.com/dst_news/dst_news_mexico08.html
2397 2420 #
2398 2421 # "Mexico's Senate approved the amendments to the Mexican Schedule System that
2399 2422 # will allow Bahía de Banderas and Puerto Vallarta to share the same time
2400 2423 # zone ..."
2401 2424 # Baja California Sur, Nayarit, Sinaloa
2402 2425
2403 2426 # From Arthur David Olson (2010-05-01):
2404 2427 # Use "Bahia_Banderas" to keep the name to fourteen characters.
2405 2428
2406 2429 # Mazatlán
2407 2430 Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
2408 2431 -7:00 - MST 1927 Jun 10 23:00
2409 2432 -6:00 - CST 1930 Nov 15
2410 2433 -7:00 - MST 1931 May 1 23:00
2411 2434 -6:00 - CST 1931 Oct
2412 2435 -7:00 - MST 1932 Apr 1
2413 2436 -6:00 - CST 1942 Apr 24
2414 2437 -7:00 - MST 1949 Jan 14
2415 2438 -8:00 - PST 1970
2416 2439 -7:00 Mexico M%sT
2417 2440
2418 2441 # Bahía de Banderas
2419 2442 Zone America/Bahia_Banderas -7:01:00 - LMT 1921 Dec 31 23:59:00
2420 2443 -7:00 - MST 1927 Jun 10 23:00
2421 2444 -6:00 - CST 1930 Nov 15
2422 2445 -7:00 - MST 1931 May 1 23:00
2423 2446 -6:00 - CST 1931 Oct
2424 2447 -7:00 - MST 1932 Apr 1
2425 2448 -6:00 - CST 1942 Apr 24
2426 2449 -7:00 - MST 1949 Jan 14
2427 2450 -8:00 - PST 1970
2428 2451 -7:00 Mexico M%sT 2010 Apr 4 2:00
2429 2452 -6:00 Mexico C%sT
2430 2453
2431 2454 # Baja California (near US border)
2432 2455 Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
2433 2456 -7:00 - MST 1924
2434 2457 -8:00 - PST 1927 Jun 10 23:00
2435 2458 -7:00 - MST 1930 Nov 15
2436 2459 -8:00 - PST 1931 Apr 1
2437 2460 -8:00 1:00 PDT 1931 Sep 30
2438 2461 -8:00 - PST 1942 Apr 24
2439 2462 -8:00 1:00 PWT 1945 Aug 14 23:00u
2440 2463 -8:00 1:00 PPT 1945 Nov 12 # Peace
2441 2464 -8:00 - PST 1948 Apr 5
2442 2465 -8:00 1:00 PDT 1949 Jan 14
2443 2466 -8:00 - PST 1954
2444 2467 -8:00 CA P%sT 1961
2445 2468 -8:00 - PST 1976
2446 2469 -8:00 US P%sT 1996
2447 2470 -8:00 Mexico P%sT 2001
2448 2471 -8:00 US P%sT 2002 Feb 20
2449 2472 -8:00 Mexico P%sT 2010
2450 2473 -8:00 US P%sT
2451 2474 # Baja California (away from US border)
2452 2475 Zone America/Santa_Isabel -7:39:28 - LMT 1922 Jan 1 0:20:32
2453 2476 -7:00 - MST 1924
2454 2477 -8:00 - PST 1927 Jun 10 23:00
2455 2478 -7:00 - MST 1930 Nov 15
2456 2479 -8:00 - PST 1931 Apr 1
2457 2480 -8:00 1:00 PDT 1931 Sep 30
2458 2481 -8:00 - PST 1942 Apr 24
2459 2482 -8:00 1:00 PWT 1945 Aug 14 23:00u
2460 2483 -8:00 1:00 PPT 1945 Nov 12 # Peace
2461 2484 -8:00 - PST 1948 Apr 5
2462 2485 -8:00 1:00 PDT 1949 Jan 14
2463 2486 -8:00 - PST 1954
2464 2487 -8:00 CA P%sT 1961
2465 2488 -8:00 - PST 1976
2466 2489 -8:00 US P%sT 1996
2467 2490 -8:00 Mexico P%sT 2001
2468 2491 -8:00 US P%sT 2002 Feb 20
2469 2492 -8:00 Mexico P%sT
2470 2493 # From Paul Eggert (2006-03-22):
2471 2494 # Formerly there was an America/Ensenada zone, which differed from
2472 2495 # America/Tijuana only in that it did not observe DST from 1976
2473 2496 # through 1995. This was as per Shanks (1999). But Shanks & Pottenger say
2474 2497 # Ensenada did not observe DST from 1948 through 1975. Guy Harris reports
2475 2498 # that the 1987 OAG says "Only Ensenada, Mexicali, San Felipe and
2476 2499 # Tijuana observe DST," which agrees with Shanks & Pottenger but implies that
2477 2500 # DST-observance was a town-by-town matter back then. This concerns
2478 2501 # data after 1970 so most likely there should be at least one Zone
2479 2502 # other than America/Tijuana for Baja, but it's not clear yet what its
2480 2503 # name or contents should be.
2481 2504 #
2482 2505 # Revillagigedo Is
2483 2506 # no information
2484 2507
2485 2508 ###############################################################################
2486 2509
2487 2510 # Anguilla
2488 2511 # See America/Port_of_Spain.
2489 2512
2490 2513 # Antigua and Barbuda
2491 2514 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2492 2515 Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
2493 2516 -5:00 - EST 1951
2494 2517 -4:00 - AST
2495 2518
2496 2519 # Bahamas
2497 2520 #
2498 2521 # For 1899 Milne gives -5:09:29.5; round that.
2499 2522 #
2500 2523 # From Sue Williams (2006-12-07):
2501 2524 # The Bahamas announced about a month ago that they plan to change their DST
2502 2525 # rules to sync with the U.S. starting in 2007....
2503 2526 # http://www.jonesbahamas.com/?c=45&a=10412
2504 2527
2505 2528 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2506 2529 Rule Bahamas 1964 1975 - Oct lastSun 2:00 0 S
2507 2530 Rule Bahamas 1964 1975 - Apr lastSun 2:00 1:00 D
2508 2531 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2509 2532 Zone America/Nassau -5:09:30 - LMT 1912 Mar 2
2510 2533 -5:00 Bahamas E%sT 1976
2511 2534 -5:00 US E%sT
2512 2535
2513 2536 # Barbados
2514 2537
2515 2538 # For 1899 Milne gives -3:58:29.2; round that.
2516 2539
2517 2540 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2518 2541 Rule Barb 1977 only - Jun 12 2:00 1:00 D
2519 2542 Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
2520 2543 Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
2521 2544 Rule Barb 1979 only - Sep 30 2:00 0 S
2522 2545 Rule Barb 1980 only - Sep 25 2:00 0 S
2523 2546 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2524 2547 Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown
2525 2548 -3:58:29 - BMT 1932 # Bridgetown Mean Time
2526 2549 -4:00 Barb A%sT
2527 2550
2528 2551 # Belize
2529 2552 # Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
2530 2553 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2531 2554 Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
2532 2555 Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
2533 2556 Rule Belize 1973 only - Dec 5 0:00 1:00 D
2534 2557 Rule Belize 1974 only - Feb 9 0:00 0 S
2535 2558 Rule Belize 1982 only - Dec 18 0:00 1:00 D
2536 2559 Rule Belize 1983 only - Feb 12 0:00 0 S
2537 2560 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2538 2561 Zone America/Belize -5:52:48 - LMT 1912 Apr
2539 2562 -6:00 Belize C%sT
2540 2563
2541 2564 # Bermuda
2542 2565
2543 2566 # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
2544 2567 # Bermuda dockyard, Ireland I; round that.
2545 2568
2546 2569 # From Dan Jones, reporting in The Royal Gazette (2006-06-26):
2547 2570
2548 2571 # Next year, however, clocks in the US will go forward on the second Sunday
2549 2572 # in March, until the first Sunday in November. And, after the Time Zone
2550 2573 # (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
2551 2574 # Friday, the same thing will happen in Bermuda.
2552 2575 # http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
2553 2576
2554 2577 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2555 2578 Zone Atlantic/Bermuda -4:19:18 - LMT 1930 Jan 1 2:00 # Hamilton
2556 2579 -4:00 - AST 1974 Apr 28 2:00
2557 2580 -4:00 Canada A%sT 1976
2558 2581 -4:00 US A%sT
2559 2582
2560 2583 # Cayman Is
2561 2584 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2562 2585 Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
2563 2586 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
2564 2587 -5:00 - EST
2565 2588
2566 2589 # Costa Rica
2567 2590
2568 2591 # Milne gives -5:36:13.3 as San José mean time; round to nearest.
2569 2592
2570 2593 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2571 2594 Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
2572 2595 Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
2573 2596 Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
2574 2597 # IATA SSIM (1991-09) says the following was at 1:00;
2575 2598 # go with Shanks & Pottenger.
2576 2599 Rule CR 1991 only - Jul 1 0:00 0 S
2577 2600 Rule CR 1992 only - Mar 15 0:00 0 S
2578 2601 # There are too many San Josés elsewhere, so we'll use 'Costa Rica'.
2579 2602 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2580 2603 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José
2581 2604 -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time
2582 2605 -6:00 CR C%sT
2583 2606 # Coco
2584 2607 # no information; probably like America/Costa_Rica
2585 2608
2586 2609 # Cuba
2587 2610
2588 2611 # From Paul Eggert (2013-02-21):
2589 2612 # Milne gives -5:28:50.45 for the observatory at Havana, -5:29:23.57
2590 2613 # for the port, and -5:30 for meteorological observations.
2591 2614 # For now, stick with Shanks & Pottenger.
2592 2615
2593 2616 # From Arthur David Olson (1999-03-29):
2594 2617 # The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
2595 2618 # the Cuban National Team and the Baltimore Orioles was carried live on
2596 2619 # the Orioles Radio Network, including affiliate WTOP in Washington, DC.
2597 2620 # During the game, play-by-play announcer Jim Hunter noted that
2598 2621 # "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
2599 2622 # Time today." (The "two hour" remark referred to losing one hour of
2600 2623 # sleep on 1999-03-28 - when the announcers were in Cuba as it switched
2601 2624 # to DST - and one more hour on 1999-04-04 - when the announcers will have
2602 2625 # returned to Baltimore, which switches on that date.)
2603 2626
2604 2627 # From Steffen Thorsen (2013-11-11):
2605 2628 # DST start in Cuba in 2004 ... does not follow the same rules as the
2606 2629 # years before. The correct date should be Sunday 2004-03-28 00:00 ...
2607 2630 # https://web.archive.org/web/20040402060750/http://www.granma.cu/espanol/2004/marzo/sab27/reloj.html
2608 2631
2609 2632 # From Evert van der Veer via Steffen Thorsen (2004-10-28):
2610 2633 # Cuba is not going back to standard time this year.
2611 2634 # From Paul Eggert (2006-03-22):
2612 2635 # http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html
2613 2636 # says that it's due to a problem at the Antonio Guiteras
2614 2637 # thermoelectric plant, and says "This October there will be no return
2615 2638 # to normal hours (after daylight saving time)".
2616 2639 # For now, let's assume that it's a temporary measure.
2617 2640
2618 2641 # From Carlos A. Carnero Delgado (2005-11-12):
2619 2642 # This year (just like in 2004-2005) there's no change in time zone
2620 2643 # adjustment in Cuba. We will stay in daylight saving time:
2621 2644 # http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html
2622 2645
2623 2646 # From Jesper Nørgaard Welen (2006-10-21):
2624 2647 # An article in GRANMA INTERNACIONAL claims that Cuba will end
2625 2648 # the 3 years of permanent DST next weekend, see
2626 2649 # http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html
2627 2650 # "On Saturday night, October 28 going into Sunday, October 29, at 01:00,
2628 2651 # watches should be set back one hour - going back to 00:00 hours - returning
2629 2652 # to the normal schedule....
2630 2653
2631 2654 # From Paul Eggert (2007-03-02):
2632 2655 # <http://www.granma.cubaweb.cu/english/news/art89.html>, dated yesterday,
2633 2656 # says Cuban clocks will advance at midnight on March 10.
2634 2657 # For lack of better information, assume Cuba will use US rules,
2635 2658 # except that it switches at midnight standard time as usual.
2636 2659 #
2637 2660 # From Steffen Thorsen (2007-10-25):
2638 2661 # Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week
2639 2662 # earlier - on the last Sunday of October, just like in 2006.
2640 2663 #
2641 2664 # He supplied these references:
2642 2665 #
2643 2666 # http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES
2644 2667 # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm
2645 2668 #
2646 2669 # From Alex Krivenyshev (2007-10-25):
2647 2670 # Here is also article from Granma (Cuba):
2648 2671 #
2649 2672 # Regirá el Horario Normal desde el próximo domingo 28 de octubre
2650 2673 # http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html
2651 2674 #
2652 2675 # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html
2653 2676
2654 2677 # From Arthur David Olson (2008-03-09):
2655 2678 # I'm in Maryland which is now observing United States Eastern Daylight
2656 2679 # Time. At 9:44 local time I used RealPlayer to listen to
2657 2680 # http://media.enet.cu/radioreloj
2658 2681 # a Cuban information station, and heard
2659 2682 # the time announced as "ocho cuarenta y cuatro" ("eight forty-four"),
2660 2683 # indicating that Cuba is still on standard time.
2661 2684
2662 2685 # From Steffen Thorsen (2008-03-12):
2663 2686 # It seems that Cuba will start DST on Sunday, 2007-03-16...
2664 2687 # It was announced yesterday, according to this source (in Spanish):
2665 2688 # http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm
2666 2689 #
2667 2690 # Some more background information is posted here:
2668 2691 # http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html
2669 2692 #
2670 2693 # The article also says that Cuba has been observing DST since 1963,
2671 2694 # while Shanks (and tzdata) has 1965 as the first date (except in the
2672 2695 # 1940's). Many other web pages in Cuba also claim that it has been
2673 2696 # observed since 1963, but with the exception of 1970 - an exception
2674 2697 # which is not present in tzdata/Shanks. So there is a chance we need to
2675 2698 # change some historic records as well.
2676 2699 #
2677 2700 # One example:
2678 2701 # http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm
2679 2702
2680 2703 # From Jesper Nørgaard Welen (2008-03-13):
2681 2704 # The Cuban time change has just been confirmed on the most authoritative
2682 2705 # web site, the Granma. Please check out
2683 2706 # http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html
2684 2707 #
2685 2708 # Basically as expected after Steffen Thorsen's information, the change
2686 2709 # will take place midnight between Saturday and Sunday.
2687 2710
2688 2711 # From Arthur David Olson (2008-03-12):
2689 2712 # Assume Sun>=15 (third Sunday) going forward.
2690 2713
2691 2714 # From Alexander Krivenyshev (2009-03-04)
2692 2715 # According to the Radio Reloj - Cuba will start Daylight Saving Time on
2693 2716 # midnight between Saturday, March 07, 2009 and Sunday, March 08, 2009-
2694 2717 # not on midnight March 14 / March 15 as previously thought.
2695 2718 #
2696 2719 # http://www.worldtimezone.com/dst_news/dst_news_cuba05.html
2697 2720 # (in Spanish)
2698 2721
2699 2722 # From Arthur David Olson (2009-03-09)
2700 2723 # I listened over the Internet to
2701 2724 # http://media.enet.cu/readioreloj
2702 2725 # this morning; when it was 10:05 a. m. here in Bethesda, Maryland the
2703 2726 # the time was announced as "diez cinco" - the same time as here, indicating
2704 2727 # that has indeed switched to DST. Assume second Sunday from 2009 forward.
2705 2728
2706 2729 # From Steffen Thorsen (2011-03-08):
2707 2730 # Granma announced that Cuba is going to start DST on 2011-03-20 00:00:00
2708 2731 # this year. Nothing about the end date known so far (if that has
2709 2732 # changed at all).
2710 2733 #
2711 2734 # Source:
2712 2735 # http://granma.co.cu/2011/03/08/nacional/artic01.html
2713 2736 #
2714 2737 # Our info:
2715 2738 # http://www.timeanddate.com/news/time/cuba-starts-dst-2011.html
2716 2739 #
2717 2740 # From Steffen Thorsen (2011-10-30)
2718 2741 # Cuba will end DST two weeks later this year. Instead of going back
2719 2742 # tonight, it has been delayed to 2011-11-13 at 01:00.
2720 2743 #
2721 2744 # One source (Spanish)
2722 2745 # http://www.radioangulo.cu/noticias/cuba/17105-cuba-restablecera-el-horario-del-meridiano-de-greenwich.html
2723 2746 #
2724 2747 # Our page:
2725 2748 # http://www.timeanddate.com/news/time/cuba-time-changes-2011.html
2726 2749 #
2727 2750 # From Steffen Thorsen (2012-03-01)
2728 2751 # According to Radio Reloj, Cuba will start DST on Midnight between March
2729 2752 # 31 and April 1.
2730 2753 #
2731 2754 # Radio Reloj has the following info (Spanish):
2732 2755 # http://www.radioreloj.cu/index.php/noticias-radio-reloj/71-miscelaneas/7529-cuba-aplicara-el-horario-de-verano-desde-el-1-de-abril
2733 2756 #
2734 2757 # Our info on it:
2735 2758 # http://www.timeanddate.com/news/time/cuba-starts-dst-2012.html
2736 2759
2737 2760 # From Steffen Thorsen (2012-11-03):
2738 2761 # Radio Reloj and many other sources report that Cuba is changing back
2739 2762 # to standard time on 2012-11-04:
2740 2763 # http://www.radioreloj.cu/index.php/noticias-radio-reloj/36-nacionales/9961-regira-horario-normal-en-cuba-desde-el-domingo-cuatro-de-noviembre
2741 2764 # From Paul Eggert (2012-11-03):
2742 2765 # For now, assume the future rule is first Sunday in November.
2743 2766
2744 2767 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2745 2768 Rule Cuba 1928 only - Jun 10 0:00 1:00 D
2746 2769 Rule Cuba 1928 only - Oct 10 0:00 0 S
2747 2770 Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D
2748 2771 Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S
2749 2772 Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D
2750 2773 Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S
2751 2774 Rule Cuba 1965 only - Jun 1 0:00 1:00 D
2752 2775 Rule Cuba 1965 only - Sep 30 0:00 0 S
2753 2776 Rule Cuba 1966 only - May 29 0:00 1:00 D
2754 2777 Rule Cuba 1966 only - Oct 2 0:00 0 S
2755 2778 Rule Cuba 1967 only - Apr 8 0:00 1:00 D
2756 2779 Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S
2757 2780 Rule Cuba 1968 only - Apr 14 0:00 1:00 D
2758 2781 Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D
2759 2782 Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
2760 2783 Rule Cuba 1972 1974 - Oct 8 0:00 0 S
2761 2784 Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
2762 2785 Rule Cuba 1978 only - May 7 0:00 1:00 D
2763 2786 Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
2764 2787 Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
2765 2788 Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
2766 2789 Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
2767 2790 Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D
2768 2791 Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
2769 2792 Rule Cuba 1996 only - Oct 6 0:00s 0 S
2770 2793 Rule Cuba 1997 only - Oct 12 0:00s 0 S
2771 2794 Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D
2772 2795 Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S
2773 2796 Rule Cuba 2000 2003 - Apr Sun>=1 0:00s 1:00 D
2774 2797 Rule Cuba 2004 only - Mar lastSun 0:00s 1:00 D
2775 2798 Rule Cuba 2006 2010 - Oct lastSun 0:00s 0 S
2776 2799 Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D
2777 2800 Rule Cuba 2008 only - Mar Sun>=15 0:00s 1:00 D
2778 2801 Rule Cuba 2009 2010 - Mar Sun>=8 0:00s 1:00 D
2779 2802 Rule Cuba 2011 only - Mar Sun>=15 0:00s 1:00 D
2780 2803 Rule Cuba 2011 only - Nov 13 0:00s 0 S
2781 2804 Rule Cuba 2012 only - Apr 1 0:00s 1:00 D
2782 2805 Rule Cuba 2012 max - Nov Sun>=1 0:00s 0 S
2783 2806 Rule Cuba 2013 max - Mar Sun>=8 0:00s 1:00 D
2784 2807
2785 2808 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2786 2809 Zone America/Havana -5:29:28 - LMT 1890
2787 2810 -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
2788 2811 -5:00 Cuba C%sT
2789 2812
2790 2813 # Dominica
2791 2814 # See America/Port_of_Spain.
2792 2815
2793 2816 # Dominican Republic
2794 2817
2795 2818 # From Steffen Thorsen (2000-10-30):
2796 2819 # Enrique Morales reported to me that the Dominican Republic has changed the
2797 2820 # time zone to Eastern Standard Time as of Sunday 29 at 2 am....
2798 2821 # http://www.listin.com.do/antes/261000/republica/princi.html
2799 2822
2800 2823 # From Paul Eggert (2000-12-04):
2801 2824 # That URL (2000-10-26, in Spanish) says they planned to use US-style DST.
2802 2825
2803 2826 # From Rives McDow (2000-12-01):
2804 2827 # Dominican Republic changed its mind and presidential decree on Tuesday,
2805 2828 # November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the
2806 2829 # Dominican Republic will be reverting to 8 hours from the International Date
2807 2830 # Line, and will not be using DST in the foreseeable future. The reason they
2808 2831 # decided to use DST was to be in synch with Puerto Rico, who was also going
2809 2832 # to implement DST. When Puerto Rico didn't implement DST, the president
2810 2833 # decided to revert.
2811 2834
2812 2835
2813 2836 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2814 2837 Rule DR 1966 only - Oct 30 0:00 1:00 D
2815 2838 Rule DR 1967 only - Feb 28 0:00 0 S
2816 2839 Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
2817 2840 Rule DR 1970 only - Feb 21 0:00 0 S
2818 2841 Rule DR 1971 only - Jan 20 0:00 0 S
2819 2842 Rule DR 1972 1974 - Jan 21 0:00 0 S
2820 2843 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2821 2844 Zone America/Santo_Domingo -4:39:36 - LMT 1890
2822 2845 -4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
2823 2846 -5:00 DR E%sT 1974 Oct 27
2824 2847 -4:00 - AST 2000 Oct 29 2:00
2825 2848 -5:00 US E%sT 2000 Dec 3 1:00
2826 2849 -4:00 - AST
2827 2850
2828 2851 # El Salvador
2829 2852
2830 2853 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2831 2854 Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
2832 2855 Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
2833 2856 # There are too many San Salvadors elsewhere, so use America/El_Salvador
2834 2857 # instead of America/San_Salvador.
2835 2858 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2836 2859 Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
2837 2860 -6:00 Salv C%sT
2838 2861
2839 2862 # Grenada
2840 2863 # Guadeloupe
2841 2864 # St Barthélemy
2842 2865 # St Martin (French part)
2843 2866 # See America/Port_of_Spain.
2844 2867
2845 2868 # Guatemala
2846 2869 #
2847 2870 # From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen:
2848 2871 # Diario Co Latino, at
2849 2872 # <http://www.diariocolatino.com/internacionales/detalles.asp?NewsID=8079>,
2850 2873 # says in an article dated 2006-04-19 that the Guatemalan government had
2851 2874 # decided on that date to advance official time by 60 minutes, to lessen the
2852 2875 # impact of the elevated cost of oil.... Daylight saving time will last from
2853 2876 # 2006-04-29 24:00 (Guatemalan standard time) to 2006-09-30 (time unspecified).
2854 2877 # From Paul Eggert (2006-06-22):
2855 2878 # The Ministry of Energy and Mines, press release CP-15/2006
2856 2879 # (2006-04-19), says DST ends at 24:00. See
2857 2880 # http://www.sieca.org.gt/Sitio_publico/Energeticos/Doc/Medidas/Cambio_Horario_Nac_190406.pdf
2858 2881
2859 2882 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2860 2883 Rule Guat 1973 only - Nov 25 0:00 1:00 D
2861 2884 Rule Guat 1974 only - Feb 24 0:00 0 S
2862 2885 Rule Guat 1983 only - May 21 0:00 1:00 D
2863 2886 Rule Guat 1983 only - Sep 22 0:00 0 S
2864 2887 Rule Guat 1991 only - Mar 23 0:00 1:00 D
2865 2888 Rule Guat 1991 only - Sep 7 0:00 0 S
2866 2889 Rule Guat 2006 only - Apr 30 0:00 1:00 D
2867 2890 Rule Guat 2006 only - Oct 1 0:00 0 S
2868 2891 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2869 2892 Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
2870 2893 -6:00 Guat C%sT
2871 2894
2872 2895 # Haiti
2873 2896 # From Gwillim Law (2005-04-15):
2874 2897 # Risto O. Nykänen wrote me that Haiti is now on DST.
2875 2898 # I searched for confirmation, and I found a press release
2876 2899 # on the Web page of the Haitian Consulate in Chicago (2005-03-31),
2877 2900 # <http://www.haitianconsulate.org/time.doc>. Translated from French, it says:
2878 2901 #
2879 2902 # "The Prime Minister's Communication Office notifies the public in general
2880 2903 # and the press in particular that, following a decision of the Interior
2881 2904 # Ministry and the Territorial Collectivities [I suppose that means the
2882 2905 # provinces], Haiti will move to Eastern Daylight Time in the night from next
2883 2906 # Saturday the 2nd to Sunday the 3rd.
2884 2907 #
2885 2908 # "Consequently, the Prime Minister's Communication Office wishes to inform
2886 2909 # the population that the country's clocks will be set forward one hour
2887 2910 # starting at midnight. This provision will hold until the last Saturday in
2888 2911 # October 2005.
2889 2912 #
2890 2913 # "Port-au-Prince, March 31, 2005"
2891 2914 #
2892 2915 # From Steffen Thorsen (2006-04-04):
2893 2916 # I have been informed by users that Haiti observes DST this year like
2894 2917 # last year, so the current "only" rule for 2005 might be changed to a
2895 2918 # "max" rule or to last until 2006. (Who knows if they will observe DST
2896 2919 # next year or if they will extend their DST like US/Canada next year).
2897 2920 #
2898 2921 # I have found this article about it (in French):
2899 2922 # http://www.haitipressnetwork.com/news.cfm?articleID=7612
2900 2923 #
2901 2924 # The reason seems to be an energy crisis.
2902 2925
2903 2926 # From Stephen Colebourne (2007-02-22):
2904 2927 # Some IATA info: Haiti won't be having DST in 2007.
2905 2928
2906 2929 # From Steffen Thorsen (2012-03-11):
2907 2930 # According to several news sources, Haiti will observe DST this year,
2908 2931 # apparently using the same start and end date as USA/Canada.
2909 2932 # So this means they have already changed their time.
2910 2933 #
2911 2934 # http://www.alterpresse.org/spip.php?article12510
2912 2935 # http://radiovision2000haiti.net/home/?p=13253
2913 2936 #
2914 2937 # From Arthur David Olson (2012-03-11):
2915 2938 # The alterpresse.org source seems to show a US-style leap from 2:00 a.m. to
2916 2939 # 3:00 a.m. rather than the traditional Haitian jump at midnight.
2917 2940 # Assume a US-style fall back as well.
2918 2941
2919 2942 # From Steffen Thorsen (2013-03-10):
2920 2943 # It appears that Haiti is observing DST this year as well, same rules
2921 2944 # as US/Canada. They did it last year as well, and it looks like they
2922 2945 # are going to observe DST every year now...
2923 2946 #
2924 2947 # http://radiovision2000haiti.net/public/haiti-avis-changement-dheure-dimanche/
2925 2948 # http://www.canalplushaiti.net/?p=6714
2926 2949
2927 2950 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2928 2951 Rule Haiti 1983 only - May 8 0:00 1:00 D
2929 2952 Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
2930 2953 Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
2931 2954 # Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
2932 2955 # Go with IATA.
2933 2956 Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D
2934 2957 Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
2935 2958 Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
2936 2959 Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
2937 2960 Rule Haiti 2012 max - Mar Sun>=8 2:00 1:00 D
2938 2961 Rule Haiti 2012 max - Nov Sun>=1 2:00 0 S
2939 2962 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2940 2963 Zone America/Port-au-Prince -4:49:20 - LMT 1890
2941 2964 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
2942 2965 -5:00 Haiti E%sT
2943 2966
2944 2967 # Honduras
2945 2968 # Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
2946 2969
2947 2970 # From Paul Eggert (2006-05-05):
2948 2971 # worldtimezone.com reports a 2006-05-02 Spanish-language AP article
2949 2972 # saying Honduras will start using DST midnight Saturday, effective 4
2950 2973 # months until September. La Tribuna reported today
2951 2974 # <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president
2952 2975 # of Honduras, refused to back down on this.
2953 2976
2954 2977 # From Jesper Nørgaard Welen (2006-08-08):
2955 2978 # It seems that Honduras has returned from DST to standard time this Monday at
2956 2979 # 00:00 hours (prolonging Sunday to 25 hours duration).
2957 2980 # http://www.worldtimezone.com/dst_news/dst_news_honduras04.html
2958 2981
2959 2982 # From Paul Eggert (2006-08-08):
2960 2983 # Also see Diario El Heraldo, The country returns to standard time (2006-08-08).
2961 2984 # http://www.elheraldo.hn/nota.php?nid=54941&sec=12
2962 2985 # It mentions executive decree 18-2006.
2963 2986
2964 2987 # From Steffen Thorsen (2006-08-17):
2965 2988 # Honduras will observe DST from 2007 to 2009, exact dates are not
2966 2989 # published, I have located this authoritative source:
2967 2990 # http://www.presidencia.gob.hn/noticia.aspx?nId=47
2968 2991
2969 2992 # From Steffen Thorsen (2007-03-30):
2970 2993 # http://www.laprensahn.com/pais_nota.php?id04962=7386
2971 2994 # So it seems that Honduras will not enter DST this year....
2972 2995
2973 2996 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2974 2997 Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
2975 2998 Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
2976 2999 Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
2977 3000 Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
|
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651 lines elided |
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2978 3001 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2979 3002 Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
2980 3003 -6:00 Hond C%sT
2981 3004 #
2982 3005 # Great Swan I ceded by US to Honduras in 1972
2983 3006
2984 3007 # Jamaica
2985 3008 # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
2986 3009 # unspecified official document, and says "This time is used throughout the
2987 3010 # island". Go with Milne. Round to the nearest second as required by zic.
3011 +#
3012 +# Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but
3013 +# Lance Neita writes that Prime Minister Michael Manley decreed it January 5.
3014 +# Assume Neita meant Jan 6 02:00, the same as the US. Neita also writes that
3015 +# Manley's supporters associated this act with Manley's nickname "Joshua"
3016 +# (recall that in the Bible the sun stood still at Joshua's request),
3017 +# and with the Rod of Correction which Manley said he had received from
3018 +# Haile Selassie, Emperor of Ethiopia. See:
3019 +# Neita L. The politician in all of us. Jamaica Observer 2014-09-20
3020 +# http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
3021 +#
2988 3022 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2989 3023 Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
2990 3024 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
2991 - -5:00 - EST 1974 Apr 28 2:00
3025 + -5:00 - EST 1974
2992 3026 -5:00 US E%sT 1984
2993 3027 -5:00 - EST
2994 3028
2995 3029 # Martinique
2996 3030 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2997 3031 Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
2998 3032 -4:04:20 - FFMT 1911 May # Fort-de-France MT
2999 3033 -4:00 - AST 1980 Apr 6
3000 3034 -4:00 1:00 ADT 1980 Sep 28
3001 3035 -4:00 - AST
3002 3036
3003 3037 # Montserrat
3004 3038 # See America/Port_of_Spain.
3005 3039
3006 3040 # Nicaragua
3007 3041 #
3008 3042 # This uses Shanks & Pottenger for times before 2005.
3009 3043 #
3010 3044 # From Steffen Thorsen (2005-04-12):
3011 3045 # I've got reports from 8 different people that Nicaragua just started
3012 3046 # DST on Sunday 2005-04-10, in order to save energy because of
3013 3047 # expensive petroleum. The exact end date for DST is not yet
3014 3048 # announced, only "September" but some sites also say "mid-September".
3015 3049 # Some background information is available on the President's official site:
3016 3050 # http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm
3017 3051 # The Decree, no 23-2005 is available here:
3018 3052 # 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
3019 3053 #
3020 3054 # From Paul Eggert (2005-05-01):
3021 3055 # The decree doesn't say anything about daylight saving, but for now let's
3022 3056 # assume that it is daylight saving....
3023 3057 #
3024 3058 # From Gwillim Law (2005-04-21):
3025 3059 # The Associated Press story on the time change, which can be found at
3026 3060 # http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html
3027 3061 # and elsewhere, says (fifth paragraph, translated from Spanish): "The last
3028 3062 # time that a change of clocks was applied to save energy was in the year 2000
3029 3063 # during the Arnoldo Alemán administration."...
3030 3064 # The northamerica file says that Nicaragua has been on UTC-6 continuously
3031 3065 # since December 1998. I wasn't able to find any details of Nicaraguan time
3032 3066 # changes in 2000. Perhaps a note could be added to the northamerica file, to
3033 3067 # the effect that we have indirect evidence that DST was observed in 2000.
3034 3068 #
3035 3069 # From Jesper Nørgaard Welen (2005-11-02):
3036 3070 # Nicaragua left DST the 2005-10-02 at 00:00 (local time).
3037 3071 # http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm
3038 3072 # (2005-09-26)
3039 3073 #
3040 3074 # From Jesper Nørgaard Welen (2006-05-05):
3041 3075 # http://www.elnuevodiario.com.ni/2006/05/01/nacionales/18410
3042 3076 # (my informal translation)
3043 3077 # By order of the president of the republic, Enrique Bolaños, Nicaragua
3044 3078 # advanced by sixty minutes their official time, yesterday at 2 in the
3045 3079 # morning, and will stay that way until 30th of September.
3046 3080 #
3047 3081 # From Jesper Nørgaard Welen (2006-09-30):
3048 3082 # http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2006/D-063-2006P-PRN-Cambio-Hora.pdf
3049 3083 # My informal translation runs:
3050 3084 # The natural sun time is restored in all the national territory, in that the
3051 3085 # time is returned one hour at 01:00 am of October 1 of 2006.
3052 3086 #
3053 3087 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3054 3088 Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D
3055 3089 Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S
3056 3090 Rule Nic 2005 only - Apr 10 0:00 1:00 D
3057 3091 Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
3058 3092 Rule Nic 2006 only - Apr 30 2:00 1:00 D
3059 3093 Rule Nic 2006 only - Oct Sun>=1 1:00 0 S
3060 3094 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3061 3095 Zone America/Managua -5:45:08 - LMT 1890
3062 3096 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time?
3063 3097 -6:00 - CST 1973 May
3064 3098 -5:00 - EST 1975 Feb 16
3065 3099 -6:00 Nic C%sT 1992 Jan 1 4:00
3066 3100 -5:00 - EST 1992 Sep 24
3067 3101 -6:00 - CST 1993
3068 3102 -5:00 - EST 1997
3069 3103 -6:00 Nic C%sT
3070 3104
3071 3105 # Panama
3072 3106 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3073 3107 Zone America/Panama -5:18:08 - LMT 1890
3074 3108 -5:19:36 - CMT 1908 Apr 22 # Colón Mean Time
3075 3109 -5:00 - EST
3076 3110
3077 3111 # Puerto Rico
3078 3112 # There are too many San Juans elsewhere, so we'll use 'Puerto_Rico'.
3079 3113 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3080 3114 Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
3081 3115 -4:00 - AST 1942 May 3
3082 3116 -4:00 US A%sT 1946
3083 3117 -4:00 - AST
3084 3118
3085 3119 # St Kitts-Nevis
3086 3120 # St Lucia
3087 3121 # See America/Port_of_Spain.
3088 3122
3089 3123 # St Pierre and Miquelon
3090 3124 # There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
3091 3125 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3092 3126 Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
3093 3127 -4:00 - AST 1980 May
3094 3128 -3:00 - PMST 1987 # Pierre & Miquelon Time
3095 3129 -3:00 Canada PM%sT
3096 3130
3097 3131 # St Vincent and the Grenadines
3098 3132 # See America/Port_of_Spain.
3099 3133
3100 3134 # Turks and Caicos
3101 3135 #
3102 3136 # From Chris Dunn in
3103 3137 # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007
3104 3138 # (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the
3105 3139 # daylight saving dates for time changes have been adjusted to match
3106 3140 # the recent U.S. change of dates.
3107 3141 #
3108 3142 # From Brian Inglis (2007-04-28):
|
↓ open down ↓ |
107 lines elided |
↑ open up ↑ |
3109 3143 # http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26]
3110 3144 # there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three
3111 3145 # rows before that there is an out of date entry for Oct:
3112 3146 # "Eastern Standard Times Begins 2007
3113 3147 # Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time"
3114 3148 # indicating that the normal ET rules are followed.
3115 3149 #
3116 3150 # From Paul Eggert (2014-08-19):
3117 3151 # The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
3118 3152 # http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
3119 -# Model this as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
3153 +# Model this as a switch from EST/EDT to AST ...
3154 +# From Chris Walton (2014-11-04):
3155 +# ... the TCI government appears to have delayed the switch to
3156 +# "permanent daylight saving time" by one year....
3157 +# http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
3120 3158 #
3121 3159 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3122 3160 Zone America/Grand_Turk -4:44:32 - LMT 1890
3123 3161 -5:07:11 - KMT 1912 Feb # Kingston Mean Time
3124 3162 -5:00 - EST 1979
3125 - -5:00 US E%sT 2014 Nov 2 2:00
3163 + -5:00 US E%sT 2015 Nov Sun>=1 2:00
3126 3164 -4:00 - AST
3127 3165
3128 3166 # British Virgin Is
3129 3167 # Virgin Is
3130 3168 # See America/Port_of_Spain.
3131 3169
3132 3170
3133 3171 # Local Variables:
3134 3172 # coding: utf-8
3135 3173 # End:
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