diff options
Diffstat (limited to 'timezone/northamerica')
| -rw-r--r-- | timezone/northamerica | 88 |
1 files changed, 66 insertions, 22 deletions
diff --git a/timezone/northamerica b/timezone/northamerica index 2a58c95..64e4409 100644 --- a/timezone/northamerica +++ b/timezone/northamerica @@ -1,11 +1,11 @@ -# @(#)northamerica 7.72 +# @(#)northamerica 7.74 # also includes Central America and the Caribbean # This data is by no means authoritative; if you think you know better, # go ahead and edit the file (and please send any changes to # tz@elsie.nci.nih.gov for general use in the future). -# From Paul Eggert <eggert@twinsun.com> (1999-03-22): +# From Paul Eggert (1999-03-22): # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). @@ -24,12 +24,16 @@ # 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 <eggert@twinsun.com> (1995-12-19): +# 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 (1995-12-19): # A good source for time zone historical data in the US is # Thomas G. Shanks, The American Atlas (5th edition), # San Diego: ACS Publications, Inc. (1991). # Make sure you have the errata sheet; the book is somewhat useless without it. -# It is the source for the US and Puerto Rico entries below. +# It is the source for most of the pre-1991 US and Puerto Rico entries below. # From Paul Eggert (2001-03-06): # Daylight Saving Time was first suggested as a joke by Benjamin Franklin @@ -48,7 +52,8 @@ # to push people into bed earlier, and get them up earlier, to make # them healthy, wealthy and wise in spite of themselves. # -# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday +# -- Robertson Davies, The diary of Samuel Marchbanks, +# Clarke, Irwin (1947), XIX, Sunday # # For more about the first ten years of DST in the United States, see # Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html"> @@ -222,7 +227,7 @@ Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00 +Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 -5:00 US E%sT 1946 @@ -248,7 +253,7 @@ Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 +Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 -6:00 US C%sT 1920 -6:00 Chicago C%sT 1936 Mar 1 2:00 -5:00 - EST 1936 Nov 15 2:00 @@ -257,7 +262,7 @@ Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 -6:00 Chicago C%sT 1967 -6:00 US C%sT # Oliver County, ND switched from mountain to central time on 1992-10-25. -Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00 +Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 -7:00 US M%sT 1992 Oct 25 02:00 -6:00 US C%sT @@ -276,7 +281,7 @@ Rule Denver 1921 only - May 22 2:00 0 S Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D Rule Denver 1965 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00 +Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 -7:00 US M%sT 1920 -7:00 Denver M%sT 1942 -7:00 US M%sT 1946 @@ -296,7 +301,7 @@ 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 12:00 +Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 -8:00 US P%sT 1946 -8:00 CA P%sT 1967 -8:00 US P%sT @@ -423,7 +428,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00 # Shanks says the 1944 experiment came to an end on 1944-03-17. # Go with the Arizona State Library instead. -Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00 +Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 -7:00 US M%sT 1944 Jan 1 00:01 -7:00 - MST 1944 Apr 1 00:01 -7:00 US M%sT 1944 Oct 1 00:01 @@ -447,7 +452,7 @@ Link America/Denver America/Shiprock # switched four weeks late in 1974. # # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 +Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 -8:00 US P%sT 1923 May 13 2:00 -7:00 US M%sT 1974 -7:00 - MST 1974 Feb 3 2:00 @@ -491,7 +496,7 @@ Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00 +Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 -6:00 US C%sT 1920 -6:00 Indianapolis C%sT 1942 -6:00 US C%sT 1946 @@ -511,7 +516,7 @@ Rule Marengo 1951 only - Sep lastSun 2:00 0 S Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00 +Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 -6:00 US C%sT 1951 -6:00 Marengo C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 @@ -532,7 +537,7 @@ Rule Starke 1955 1956 - Oct lastSun 2:00 0 S Rule Starke 1957 1958 - Sep lastSun 2:00 0 S Rule Starke 1959 1961 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00 +Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 -6:00 US C%sT 1947 -6:00 Starke C%sT 1962 Apr 29 2:00 -5:00 - EST 1963 Oct 27 2:00 @@ -541,7 +546,7 @@ Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00 # # Switzerland County, Indiana, last observed DST in 1972. # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00 +Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 -6:00 US C%sT 1954 Apr 25 2:00 -5:00 - EST 1969 -5:00 US E%sT 1973 @@ -558,7 +563,7 @@ Rule Louisville 1946 only - Jun 2 2:00 0 S Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00 +Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 -6:00 US C%sT 1921 -6:00 Louisville C%sT 1942 -6:00 US C%sT 1946 @@ -595,7 +600,7 @@ Link America/Louisville America/Kentucky/Louisville # Federal Register 65, 160 (2000-08-17), page 50154-50158. # </a> # -Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00 +Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 -6:00 US C%sT 1946 -6:00 - CST 1968 -6:00 US C%sT 2000 Oct 29 2:00 @@ -704,7 +709,7 @@ Link Pacific/Honolulu HST ################################################################################ -# From Paul Eggert <eggert@twinsun.com> (1999-10-29): +# From Paul Eggert (1999-10-29): # A good source for time zone historical data outside the US is # Thomas G. Shanks, The International Atlas (5th edition), # San Diego: ACS Publications, Inc. (1999). @@ -761,7 +766,7 @@ Link Pacific/Honolulu HST # T: de Terre-Neuve # Y: du Yukon Yukon # -# From Paul Eggert <eggert@twinsun.com> (1994-11-22): +# From Paul Eggert (1994-11-22): # Alas, this sort of thing must be handled by localization software. # Unless otherwise specified, the data for Canada are all from Shanks. @@ -1427,7 +1432,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # Shanks reports that Baja was at -8:00 in 1922/1923. # Shanks says the 1930 transition in Baja was 1930-11-16. # Shanks reports no DST during summer 1931. -# Shanks reports a transition at 1032-03-30 23:00, not 1932-04-01. +# Shanks reports a transition at 1932-03-30 23:00, not 1932-04-01. # Shanks does not report transitions for Baja in 1945 or 1948. # Shanks reports southern Mexico transitions on 1981-12-01, not 12-23. # Shanks says Quintana Roo switched to -6:00 on 1982-12-02, and to -5:00 @@ -1873,6 +1878,26 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 -6:00 Guat C%sT # Haiti +# From Gwillim Law (2005-04-15): +# Risto O. Nykanen wrote me that Haiti is now on DST. +# I searched for confirmation, and I found a +# <a href="http://www.haitianconsulate.org/time.doc"> press release +# on the Web page of the Haitian Consulate in Chicago (2005-03-31), +# </a>. Translated from French, it says: +# +# "The Prime Minister's Communication Office notifies the public in general +# and the press in particular that, following a decision of the Interior +# Ministry and the Territorial Collectivities [I suppose that means the +# provinces], Haiti will move to Eastern Daylight Time in the night from next +# Saturday the 2nd to Sunday the 3rd. +# +# "Consequently, the Prime Minister's Communication Office wishes to inform +# the population that the country's clocks will be set forward one hour +# starting at midnight. This provision will hold until the last Saturday in +# October 2005. +# +# "Port-au-Prince, March 31, 2005" + # 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 @@ -1880,6 +1905,8 @@ Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S # Shanks says AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. Go with IATA. Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S +Rule Haiti 2005 only - Apr Sun>=1 0:00 1:00 D +Rule Haiti 2005 only - Oct lastSun 0:00 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 @@ -1931,11 +1958,28 @@ Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Olveston # Nicaragua seems to be back at -6:00 but I have not been able to find when # they changed from -5:00. # +# From Steffen Thorsen (2005-04-12): +# I've got reports from 8 different people that Nicaragua just started +# DST on Sunday 2005-04-10, in order to save energy because of +# expensive petroleum. The exact end date for DST is not yet +# announced, only "September" but some sites also say "mid-September". +# Some background information is available on the President's official site: +# http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm +# The Decree, no 23-2005 is available here: +# 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 +# +# From Paul Eggert (2005-04-12): +# The decree doesn't say anything about daylight saving, but for now let's +# assume that it is daylight saving and that they'll switch back on the +# 2nd Sunday in September. +# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S Rule Nic 1992 only - Jan 1 4:00 1:00 D Rule Nic 1992 only - Sep 24 0:00 0 S +Rule Nic 2005 only - Apr 10 0:00 1:00 D +Rule Nic 2005 only - Sep 11 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Managua -5:45:08 - LMT 1890 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? @@ -1943,7 +1987,7 @@ Zone America/Managua -5:45:08 - LMT 1890 -5:00 - EST 1975 Feb 16 -6:00 Nic C%sT 1993 Jan 1 4:00 -5:00 - EST 1998 Dec - -6:00 - CST + -6:00 Nic C%sT # Panama # Zone NAME GMTOFF RULES FORMAT [UNTIL] |