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Diffstat (limited to 'contrib/tzdata/northamerica')
| -rw-r--r-- | contrib/tzdata/northamerica | 95 |
1 files changed, 54 insertions, 41 deletions
diff --git a/contrib/tzdata/northamerica b/contrib/tzdata/northamerica index e1ed9e4..6ede9dc 100644 --- a/contrib/tzdata/northamerica +++ b/contrib/tzdata/northamerica @@ -178,22 +178,6 @@ 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 @@ -250,6 +234,21 @@ Zone PST8PDT -8:00 US P%sT # 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". @@ -305,6 +304,15 @@ Zone PST8PDT -8:00 US P%sT # 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 @@ -482,7 +490,7 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 -8:00 US P%sT # Alaska -# AK%sT is the modern abbreviation for -9:00 per USNO. +# 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, @@ -588,10 +596,8 @@ Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -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 - 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 @@ -680,7 +686,6 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 -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. @@ -1068,15 +1073,15 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 ################################################################################ -# From Paul Eggert (2014-10-31): +# 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. # -# Gwillim Law writes that a good source -# for recent time zone data is the International Air Transport +# 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, @@ -2734,15 +2739,15 @@ Zone America/Barbados -3:58:29 - LMT 1924 # Bridgetown # 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 +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 C%sT + -6:00 Belize %s # Bermuda @@ -3014,16 +3019,16 @@ Zone America/Havana -5:29:28 - LMT 1890 # 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 +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 E%sT 1974 Oct 27 + -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 @@ -3134,6 +3139,12 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 # 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 @@ -3146,6 +3157,8 @@ 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 @@ -3313,8 +3326,8 @@ Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan # 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 + -3:00 - -03 1987 + -3:00 Canada -03/-02 # St Vincent and the Grenadines # See America/Port_of_Spain. |
