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7481 Update zoneinfo to 2016h
*** 22,34 ****
# Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY).
# His pamphlet "A System of National Time for Railroads" (1870)
# was the result of his proposals at the Convention of Railroad Trunk Lines
# in New York City (1869-10). His 1870 proposal was based on Washington, DC,
# but in 1872-05 he moved the proposed origin to Greenwich.
- # His proposal was adopted by the railroads on 1883-11-18 at 12:00,
- # and the most of the country soon followed suit.
# From Paul Eggert (2005-04-16):
# That 1883 transition occurred at 12:00 new time, not at 12:00 old time.
# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005).
# From Paul Eggert (2006-03-22):
--- 22,58 ----
# Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY).
# His pamphlet "A System of National Time for Railroads" (1870)
# was the result of his proposals at the Convention of Railroad Trunk Lines
# in New York City (1869-10). His 1870 proposal was based on Washington, DC,
# but in 1872-05 he moved the proposed origin to Greenwich.
+ # From Paul Eggert (2016-09-21):
+ # Dowd's proposal left many details unresolved, such as where to draw
+ # lines between time zones. The key individual who made time zones
+ # work in the US was William Frederick Allen - railway engineer,
+ # managing editor of the Travelers' Guide, and secretary of the
+ # General Time Convention, a railway standardization group. Allen
+ # spent months in dialogs with scientific and railway leaders,
+ # developed a workable plan to institute time zones, and presented it
+ # to the General Time Convention on 1883-04-11, saying that his plan
+ # meant "local time would be practically abolished" - a plus for
+ # railway scheduling. By the next convention on 1883-10-11 nearly all
+ # railroads had agreed and it took effect on 1883-11-18 at 12:00.
+ # That Sunday was called the "day of two noons", as the eastern parts
+ # of the new zones observed noon twice. Allen witnessed the
+ # transition in New York City, writing:
+ #
+ # I heard the bells of St. Paul's strike on the old time. Four
+ # minutes later, obedient to the electrical signal from the Naval
+ # Observatory ... the time-ball made its rapid descent, the chimes
+ # of old Trinity rang twelve measured strokes, and local time was
+ # abandoned, probably forever.
+ #
+ # Most of the US soon followed suit. See:
+ # Bartky IR. The adoption of standard time. Technol Cult 1989 Jan;30(1):25-56.
+ # http://dx.doi.org/10.2307/3105430
+
# From Paul Eggert (2005-04-16):
# That 1883 transition occurred at 12:00 new time, not at 12:00 old time.
# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005).
# From Paul Eggert (2006-03-22):
*** 411,425 ****
# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
# Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county
# north of the Salmon River, and the towns of Burgdorf and Warren),
# Nevada (except West Wendover), Oregon (except the northern 3/4 of
# Malheur county), and Washington
#
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
! Rule CA 1948 only - Mar 14 2:00 1:00 D
Rule CA 1949 only - Jan 1 2:00 0 S
! Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D
Rule CA 1950 1961 - Sep lastSun 2:00 0 S
Rule CA 1962 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
-8:00 US P%sT 1946
--- 435,480 ----
# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
# Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties, Idaho county
# north of the Salmon River, and the towns of Burgdorf and Warren),
# Nevada (except West Wendover), Oregon (except the northern 3/4 of
# Malheur county), and Washington
+
+ # From Paul Eggert (2016-08-20):
+ # In early February 1948, in response to California's electricity shortage,
+ # PG&E changed power frequency from 60 to 59.5 Hz during daylight hours,
+ # causing electric clocks to lose six minutes per day. (This did not change
+ # legal time, and is not part of the data here.) See:
+ # Ross SA. An energy crisis from the past: Northern California in 1948.
+ # Working Paper No. 8, Institute of Governmental Studies, UC Berkeley,
+ # 1973-11. http://escholarship.org/uc/item/8x22k30c
#
+ # In another measure to save electricity, DST was instituted from 1948-03-14
+ # at 02:01 to 1949-01-16 at 02:00, with the governor having the option to move
+ # the fallback transition earlier. See pages 3-4 of:
+ # http://clerk.assembly.ca.gov/sites/clerk.assembly.ca.gov/files/archive/Statutes/1948/48Vol1_Chapters.pdf
+ #
+ # In response:
+ #
+ # Governor Warren received a torrent of objecting mail, and it is not too much
+ # to speculate that the objections to Daylight Saving Time were one important
+ # factor in the defeat of the Dewey-Warren Presidential ticket in California.
+ # -- Ross, p 25
+ #
+ # On December 8 the governor exercised the option, setting the date to January 1
+ # (LA Times 1948-12-09). The transition time was 02:00 (LA Times 1949-01-01).
+ #
+ # Despite the controversy, in 1949 California voters approved Proposition 12,
+ # which established DST from April's last Sunday at 01:00 until September's
+ # last Sunday at 02:00. This was amended by 1962's Proposition 6, which changed
+ # the fall-back date to October's last Sunday. See:
+ # http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1501&context=ca_ballot_props
+ # http://repository.uchastings.edu/cgi/viewcontent.cgi?article=1636&context=ca_ballot_props
+ #
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
! Rule CA 1948 only - Mar 14 2:01 1:00 D
Rule CA 1949 only - Jan 1 2:00 0 S
! Rule CA 1950 1966 - Apr lastSun 1:00 1:00 D
Rule CA 1950 1961 - Sep lastSun 2:00 0 S
Rule CA 1962 1966 - Oct lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02
-8:00 US P%sT 1946
*** 2189,2231 ****
Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# aka Panniqtuuq
! Zone America/Pangnirtung 0 - zzz 1921 # trading post est.
-4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
-5:00 Canada E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
# formerly Frobisher Bay
! Zone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est.
-5:00 NT_YK E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
# aka Qausuittuq
! Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded
-6:00 NT_YK C%sT 2000 Oct 29 2:00
-5:00 - EST 2001 Apr 1 3:00
-6:00 Canada C%sT 2006 Oct 29 2:00
-5:00 - EST 2007 Mar 11 3:00
-6:00 Canada C%sT
# aka Kangiqiniq
! Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded
-6:00 NT_YK C%sT 2000 Oct 29 2:00
-5:00 - EST 2001 Apr 1 3:00
-6:00 Canada C%sT
# aka Iqaluktuuttiaq
! Zone America/Cambridge_Bay 0 - zzz 1920 # trading post est.?
-7:00 NT_YK M%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 - EST 2000 Nov 5 0:00
-6:00 - CST 2001 Apr 1 3:00
-7:00 Canada M%sT
! Zone America/Yellowknife 0 - zzz 1935 # Yellowknife founded?
-7:00 NT_YK M%sT 1980
-7:00 Canada M%sT
! Zone America/Inuvik 0 - zzz 1953 # Inuvik founded
-8:00 NT_YK P%sT 1979 Apr lastSun 2:00
-7:00 NT_YK M%sT 1980
-7:00 Canada M%sT
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1967 May 28 0:00
--- 2244,2286 ----
Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# aka Panniqtuuq
! Zone America/Pangnirtung 0 - -00 1921 # trading post est.
-4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
-5:00 Canada E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
# formerly Frobisher Bay
! Zone America/Iqaluit 0 - -00 1942 Aug # Frobisher Bay est.
-5:00 NT_YK E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
# aka Qausuittuq
! Zone America/Resolute 0 - -00 1947 Aug 31 # Resolute founded
-6:00 NT_YK C%sT 2000 Oct 29 2:00
-5:00 - EST 2001 Apr 1 3:00
-6:00 Canada C%sT 2006 Oct 29 2:00
-5:00 - EST 2007 Mar 11 3:00
-6:00 Canada C%sT
# aka Kangiqiniq
! Zone America/Rankin_Inlet 0 - -00 1957 # Rankin Inlet founded
-6:00 NT_YK C%sT 2000 Oct 29 2:00
-5:00 - EST 2001 Apr 1 3:00
-6:00 Canada C%sT
# aka Iqaluktuuttiaq
! Zone America/Cambridge_Bay 0 - -00 1920 # trading post est.?
-7:00 NT_YK M%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 - EST 2000 Nov 5 0:00
-6:00 - CST 2001 Apr 1 3:00
-7:00 Canada M%sT
! Zone America/Yellowknife 0 - -00 1935 # Yellowknife founded?
-7:00 NT_YK M%sT 1980
-7:00 Canada M%sT
! Zone America/Inuvik 0 - -00 1953 # Inuvik founded
-8:00 NT_YK P%sT 1979 Apr lastSun 2:00
-7:00 NT_YK M%sT 1980
-7:00 Canada M%sT
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1967 May 28 0:00
*** 2474,2483 ****
--- 2529,2547 ----
Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
-6:00 - CST 1981 Dec 23
-5:00 - EST 1982 Dec 2
-6:00 Mexico C%sT
# Coahuila, Nuevo León, Tamaulipas (near US border)
+ # This includes the following municipalities:
+ # in Coahuila: Ocampo, Acuña, Zaragoza, Jiménez, Piedras Negras, Nava,
+ # Guerrero, Hidalgo.
+ # in Nuevo León: Anáhuac, Los Aldama.
+ # in Tamaulipas: Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo,
+ # Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso, Matamoros.
+ # See: Inicia mañana Horario de Verano en zona fronteriza, El Universal,
+ # 2016-03-12
+ # http://www.eluniversal.com.mx/articulo/estados/2016/03/12/inicia-manana-horario-de-verano-en-zona-fronteriza
Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
-6:00 - CST 1988
-6:00 US C%sT 1989
-6:00 Mexico C%sT 2010
-6:00 US C%sT
*** 2495,2504 ****
--- 2559,2571 ----
-7:00 - MST 1932 Apr 1
-6:00 Mexico C%sT 2001 Sep 30 2:00
-6:00 - CST 2002 Feb 20
-6:00 Mexico C%sT
# Chihuahua (near US border)
+ # This includes the municipalities of Janos, Ascensión, Juárez, Guadalupe,
+ # Práxedis G Guerrero, Coyame del Sotol, Ojinaga, and Manuel Benavides.
+ # (See the 2016-03-12 El Universal source mentioned above.)
Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 0:02:20
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
-6:00 - CST 1931 Oct
*** 3267,3277 ****
# "Eastern Standard Times Begins 2007
# Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time"
# indicating that the normal ET rules are followed.
#
# From Paul Eggert (2014-08-19):
! # The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
# http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
# Model this as a switch from EST/EDT to AST ...
# From Chris Walton (2014-11-04):
# ... the TCI government appears to have delayed the switch to
# "permanent daylight saving time" by one year....
--- 3334,3344 ----
# "Eastern Standard Times Begins 2007
# Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time"
# indicating that the normal ET rules are followed.
#
# From Paul Eggert (2014-08-19):
! # The 2014-08-13 Cabinet meeting decided to stay on UT -04 year-round. See:
# http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
# Model this as a switch from EST/EDT to AST ...
# From Chris Walton (2014-11-04):
# ... the TCI government appears to have delayed the switch to
# "permanent daylight saving time" by one year....