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8147 Update zoneinfo to 2017b
*** 176,201 ****
Zone EST5EDT -5:00 US E%sT
Zone CST6CDT -6:00 US C%sT
Zone MST7MDT -7:00 US M%sT
Zone PST8PDT -8:00 US P%sT
- # From Bob Devine (1988-01-28):
- # ...Alaska (and Hawaii) had the timezone names changed in 1967.
- # old new
- # Pacific Standard Time(PST) -same-
- # Yukon Standard Time(YST) -same-
- # Central Alaska S.T. (CAT) Alaska-Hawaii St[an]dard Time (AHST)
- # Nome Standard Time (NT) Bering Standard Time (BST)
- #
- # ...Alaska's timezone lines were redrawn in 1983 to give only 2 tz.
- # The YST zone now covers nearly all of the state, AHST just part
- # of the Aleutian islands. No DST.
-
- # From Paul Eggert (1995-12-19):
- # The tables below use 'NST', not 'NT', for Nome Standard Time.
- # I invented 'CAWT' for Central Alaska War Time.
-
# From U. S. Naval Observatory (1989-01-19):
# USA EASTERN 5 H BEHIND UTC NEW YORK, WASHINGTON
# USA EASTERN 4 H BEHIND UTC APR 3 - OCT 30
# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
--- 176,185 ----
*** 248,257 ****
--- 232,256 ----
# Alaska standard time
# Hawaii-Aleutian standard time
# Samoa standard time
# The law doesn't give abbreviations.
#
+ # From Paul Eggert (2016-12-19):
+ # Here are URLs for the 1918 and 1966 legislation:
+ # http://uscode.house.gov/statviewer.htm?volume=40&page=451
+ # http://uscode.house.gov/statviewer.htm?volume=80&page=108
+ # Although the 1918 names were officially "United States Standard
+ # Eastern Time" and similarly for "Central", "Mountain", "Pacific",
+ # and "Alaska", in practice "Standard" was placed just before "Time",
+ # as codified in 1966. In practice, Alaska time was abbreviated "AST"
+ # before 1968. Summarizing the 1967 name changes:
+ # 1918 names 1967 names
+ # -08 Standard Pacific Time (PST) Pacific standard time (PST)
+ # -09 (unofficial) Yukon (YST) Yukon standard time (YST)
+ # -10 Standard Alaska Time (AST) Alaska-Hawaii standard time (AHST)
+ # -11 (unofficial) Nome (NST) Bering standard time (BST)
+ #
# From Paul Eggert (2000-01-08), following a heads-up from Rives McDow:
# Public law 106-564 (2000-12-23) introduced ... "Chamorro Standard Time"
# for time in Guam and the Northern Marianas. See the file "australasia".
#
# From Paul Eggert (2015-04-17):
*** 303,312 ****
--- 302,320 ----
# in Russell County, Lanett in Chambers County and some towns in Lee County,
# set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
# Roberts, city administrator in Phenix City. as saying "We are in the Central
# time zone, but we do go by the Eastern time zone because so many people work
# in Columbus."
+ #
+ # From Paul Eggert (2017-02-22):
+ # Four cities are involved. The two not mentioned above are Smiths Station
+ # and Valley. Barbara Brooks, Valley's assistant treasurer, heard it started
+ # because West Point Pepperell textile mills were in Alabama while the
+ # corporate office was in Georgia, and residents voted to keep Eastern
+ # time even after the mills closed. See: Kazek K. Did you know which
+ # Alabama towns are in a different time zone? al.com 2017-02-06.
+ # http://www.al.com/living/index.ssf/2017/02/do_you_know_which_alabama_town.html
# From Paul Eggert (2014-09-06):
# Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
# says that New York City Hall time was 3 minutes 58.4 seconds fast of
# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the
*** 480,490 ****
-8:00 US P%sT 1946
-8:00 CA P%sT 1967
-8:00 US P%sT
# Alaska
! # AK%sT is the modern abbreviation for -9:00 per USNO.
#
# From Paul Eggert (2001-05-30):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
--- 488,498 ----
-8:00 US P%sT 1946
-8:00 CA P%sT 1967
-8:00 US P%sT
# Alaska
! # AK%sT is the modern abbreviation for -09 per USNO.
#
# From Paul Eggert (2001-05-30):
# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
*** 586,599 ****
-9:00 - YST 1969
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
-9:59:36 - LMT 1900 Aug 20 12:00
! -10:00 - CAT 1942
! -10:00 US CAT/CAWT 1945 Aug 14 23:00u
! -10:00 US CAT/CAPT 1946 # Peace
! -10:00 - CAT 1967 Apr
-10:00 - AHST 1969
-10:00 US AH%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
Zone America/Nome 12:58:21 - LMT 1867 Oct 18
--- 594,605 ----
-9:00 - YST 1969
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18
-9:59:36 - LMT 1900 Aug 20 12:00
! -10:00 - AST 1942
! -10:00 US A%sT 1967 Apr
-10:00 - AHST 1969
-10:00 US AH%sT 1983 Oct 30 2:00
-9:00 US Y%sT 1983 Nov 30
-9:00 US AK%sT
Zone America/Nome 12:58:21 - LMT 1867 Oct 18
*** 678,688 ****
-10:30 1:00 HDT 1933 May 21 12:00
-10:30 - HST 1942 Feb 9 2:00
-10:30 1:00 HDT 1945 Sep 30 2:00
-10:30 - HST 1947 Jun 8 2:00
-10:00 - HST
- Link Pacific/Honolulu Pacific/Johnston
# Now we turn to US areas that have diverged from the consensus since 1970.
# Arizona mostly uses MST.
--- 684,693 ----
*** 1066,1084 ****
# Jimmy Skaggs, _The Great Guano Rush_ (1994).
################################################################################
! # From Paul Eggert (2014-10-31):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
! # Gwillim Law writes that a good source
! # for recent time zone data is the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
--- 1071,1089 ----
# Jimmy Skaggs, _The Great Guano Rush_ (1994).
################################################################################
! # From Paul Eggert (2017-02-10):
#
# Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
# Unfortunately this book contains many errors and cites no sources.
#
! # Many years ago Gwillim Law wrote that a good source
! # for time zone data was the International Air Transport
# Association's Standard Schedules Information Manual (IATA SSIM),
# published semiannually. Law sent in several helpful summaries
# of the IATA's data after 1990. Except where otherwise noted,
# IATA SSIM is the source for entries after 1990.
#
*** 2732,2750 ****
-4:00 Barb A%sT
# Belize
# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
! Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 HD
! Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 S
! Rule Belize 1973 only - Dec 5 0:00 1:00 D
! Rule Belize 1974 only - Feb 9 0:00 0 S
! Rule Belize 1982 only - Dec 18 0:00 1:00 D
! Rule Belize 1983 only - Feb 12 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Belize -5:52:48 - LMT 1912 Apr
! -6:00 Belize C%sT
# Bermuda
# For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
# Bermuda dockyard, Ireland I; round that.
--- 2737,2755 ----
-4:00 Barb A%sT
# Belize
# Whitman entirely disagrees with Shanks; go with Shanks & Pottenger.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
! Rule Belize 1918 1942 - Oct Sun>=2 0:00 0:30 -0530
! Rule Belize 1919 1943 - Feb Sun>=9 0:00 0 CST
! Rule Belize 1973 only - Dec 5 0:00 1:00 CDT
! Rule Belize 1974 only - Feb 9 0:00 0 CST
! Rule Belize 1982 only - Dec 18 0:00 1:00 CDT
! Rule Belize 1983 only - Feb 12 0:00 0 CST
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Belize -5:52:48 - LMT 1912 Apr
! -6:00 Belize %s
# Bermuda
# For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower,
# Bermuda dockyard, Ireland I; round that.
*** 3012,3031 ****
# to implement DST. When Puerto Rico didn't implement DST, the president
# decided to revert.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
! Rule DR 1966 only - Oct 30 0:00 1:00 D
! Rule DR 1967 only - Feb 28 0:00 0 S
! Rule DR 1969 1973 - Oct lastSun 0:00 0:30 HD
! Rule DR 1970 only - Feb 21 0:00 0 S
! Rule DR 1971 only - Jan 20 0:00 0 S
! Rule DR 1972 1974 - Jan 21 0:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santo_Domingo -4:39:36 - LMT 1890
-4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
! -5:00 DR E%sT 1974 Oct 27
-4:00 - AST 2000 Oct 29 2:00
-5:00 US E%sT 2000 Dec 3 1:00
-4:00 - AST
# El Salvador
--- 3017,3036 ----
# to implement DST. When Puerto Rico didn't implement DST, the president
# decided to revert.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
! Rule DR 1966 only - Oct 30 0:00 1:00 EDT
! Rule DR 1967 only - Feb 28 0:00 0 EST
! Rule DR 1969 1973 - Oct lastSun 0:00 0:30 -0430
! Rule DR 1970 only - Feb 21 0:00 0 EST
! Rule DR 1971 only - Jan 20 0:00 0 EST
! Rule DR 1972 1974 - Jan 21 0:00 0 EST
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Santo_Domingo -4:39:36 - LMT 1890
-4:40 - SDMT 1933 Apr 1 12:00 # S. Dom. MT
! -5:00 DR %s 1974 Oct 27
-4:00 - AST 2000 Oct 29 2:00
-5:00 US E%sT 2000 Dec 3 1:00
-4:00 - AST
# El Salvador
*** 3132,3141 ****
--- 3137,3152 ----
# are not going on DST this year. Several other resources confirm this: ...
# http://www.radiotelevisioncaraibes.com/presse/heure_d_t_pas_de_changement_d_heure_pr_vu_pour_cet_ann_e.html
# http://www.vantbefinfo.com/changement-dheure-pas-pour-haiti/
# http://news.anmwe.com/haiti-lheure-nationale-ne-sera-ni-avancee-ni-reculee-cette-annee/
+ # From Steffen Thorsen (2017-03-12):
+ # We have received 4 mails from different people telling that Haiti
+ # has started DST again today, and this source seems to confirm that,
+ # I have not been able to find a more authoritative source:
+ # https://www.haitilibre.com/en/news-20319-haiti-notices-time-change-in-haiti.html
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Haiti 1983 only - May 8 0:00 1:00 D
Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D
Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
# Shanks & Pottenger say AT is 2:00, but IATA SSIM (1991/1997) says 1:00s.
*** 3144,3153 ****
--- 3155,3166 ----
Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S
Rule Haiti 2005 2006 - Apr Sun>=1 0:00 1:00 D
Rule Haiti 2005 2006 - Oct lastSun 0:00 0 S
Rule Haiti 2012 2015 - Mar Sun>=8 2:00 1:00 D
Rule Haiti 2012 2015 - Nov Sun>=1 2:00 0 S
+ Rule Haiti 2017 max - Mar Sun>=8 2:00 1:00 D
+ Rule Haiti 2017 max - Nov Sun>=1 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Port-au-Prince -4:49:20 - LMT 1890
-4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT
-5:00 Haiti E%sT
*** 3311,3322 ****
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-4:00 - AST 1980 May
! -3:00 - PMST 1987 # Pierre & Miquelon Time
! -3:00 Canada PM%sT
# St Vincent and the Grenadines
# See America/Port_of_Spain.
# Turks and Caicos
--- 3324,3335 ----
# St Pierre and Miquelon
# There are too many St Pierres elsewhere, so we'll use 'Miquelon'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre
-4:00 - AST 1980 May
! -3:00 - -03 1987
! -3:00 Canada -03/-02
# St Vincent and the Grenadines
# See America/Port_of_Spain.
# Turks and Caicos