diff options
Diffstat (limited to 'timezone/northamerica')
| -rw-r--r-- | timezone/northamerica | 96 |
1 files changed, 61 insertions, 35 deletions
diff --git a/timezone/northamerica b/timezone/northamerica index ca4ad5d..6e755b0 100644 --- a/timezone/northamerica +++ b/timezone/northamerica @@ -1,4 +1,4 @@ -# @(#)northamerica 7.63 +# @(#)northamerica 7.69 # also includes Central America and the Caribbean # This data is by no means authoritative; if you think you know better, @@ -193,10 +193,6 @@ Rule US 1987 max - Apr Sun>=1 2:00 1:00 D # Samoa standard time # The law doesn't give abbreviations. # -# From Paul Eggert (1995-12-19): -# Shanks uses 1983-10-30, not 1983-11-30, for the 1983 transitions. -# Go with Shanks. -# # From Paul Eggert (2000-01-08), following a heads-up from Rives McDow: # Public law 106-564 (2000-12-23) introduced the abbreviation # "Chamorro Standard Time" for time in Guam and the Northern Marianas. @@ -228,7 +224,9 @@ Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00 # US central time, represented by Chicago -# Alabama, Arkansas, Florida panhandle, Illinois, western Indiana +# Alabama, Arkansas, Florida panhandle (Bay, Calhoun, Escambia, +# Gulf, Holmes, Jackson, Okaloosa, Santa Rosa, Walton, and +# Washington counties), Illinois, western Indiana # (Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, # Vanderburgh, and Warrick counties), Iowa, most of Kansas, western # Kentucky, Louisiana, Minnesota, Mississippi, Missouri, eastern @@ -258,7 +256,7 @@ Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00 # US mountain time, represented by Denver # -# Colorado, southern Idaho, far western Kansas, Montana, western +# Colorado, far western Kansas, Montana, western # Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City), # New Mexico, southwestern North Dakota, far eastern Oregon, # western South Dakota, far western Texas (El Paso County, Hudspeth County, @@ -280,7 +278,9 @@ Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00 # US Pacific time, represented by Los Angeles # -# California, northern Idaho, most of Nevada, most of Oregon, and Washington +# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater, +# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties), +# most of Nevada, most of Oregon, and Washington # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule CA 1948 only - Mar 14 2:00 1:00 D @@ -319,13 +319,14 @@ Zone America/Juneau 15:02:19 - LMT 1867 Oct 18 -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 + -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -9:18:55 - LMT 1900 Aug 20 12:00 -9:00 - YST 1942 -9:00 US Y%sT 1946 -9:00 - YST 1969 - -9:00 US Y%sT 1983 Oct 30 2:00 + -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 @@ -334,6 +335,7 @@ Zone America/Anchorage 14:00:24 - LMT 1867 Oct 18 -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 -11:01:38 - LMT 1900 Aug 20 12:00 @@ -342,6 +344,7 @@ Zone America/Nome 12:58:21 - LMT 1867 Oct 18 -11:00 - NST 1967 Apr -11:00 - BST 1969 -11:00 US B%sT 1983 Oct 30 2:00 + -9:00 US Y%sT 1983 Nov 30 -9:00 US AK%sT Zone America/Adak 12:13:21 - LMT 1867 Oct 18 -11:46:38 - LMT 1900 Aug 20 12:00 @@ -350,6 +353,7 @@ Zone America/Adak 12:13:21 - LMT 1867 Oct 18 -11:00 - NST 1967 Apr -11:00 - BST 1969 -11:00 US B%sT 1983 Oct 30 2:00 + -10:00 US AH%sT 1983 Nov 30 -10:00 US HA%sT # Shanks writes that part of southwest Alaska (e.g. Aniak) # switched from -11:00 to -10:00 on 1968-09-22 at 02:00, @@ -405,14 +409,20 @@ Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00 -7:00 - MST # From Arthur David Olson (1988-02-13): # A writer from the Inter Tribal Council of Arizona, Inc., -# notes in private correspondence dated 12/28/87 that "Presently, only the +# notes in private correspondence dated 1987-12-28 that "Presently, only the # Navajo Nation participates in the Daylight Saving Time policy, due to its # large size and location in three states." (The "only" means that other # tribal nations don't use DST.) Link America/Denver America/Shiprock -# Southern Idaho and eastern Oregon switched four weeks late in 1974. +# Southern Idaho (Ada, Adams, Bannock, Bear Lake, Bingham, Blaine, +# Boise, Bonneville, Butte, Camas, Canyon, Caribou, Cassia, Clark, +# Custer, Elmore, Franklin, Fremont, Gem, Gooding, Jefferson, Jerome, +# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, +# Teton, Twin Falls, Valley, Washington counties) and eastern Oregon +# switched four weeks late in 1974. +# # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 -8:00 US P%sT 1923 May 13 2:00 @@ -951,10 +961,18 @@ Rule Mont 1922 only - Apr 30 2:00 1:00 D Rule Mont 1924 only - May 17 2:00 1:00 D Rule Mont 1924 1926 - Sep lastSun 2:30 0 S Rule Mont 1925 1926 - May Sun>=1 2:00 1:00 D -Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D -Rule Mont 1927 1937 - Sep lastSat 24:00 0 S -Rule Mont 1938 1940 - Apr lastSun 0:00 1:00 D -Rule Mont 1938 1939 - Sep lastSun 0:00 0 S +# The 1927-to-1937 rules can be expressed more simply as +# Rule Mont 1927 1937 - Apr lastSat 24:00 1:00 D +# Rule Mont 1927 1937 - Sep lastSat 24:00 0 S +# The rules below avoid use of 24:00 +# (which pre-1998 versions of zic cannot handle). +Rule Mont 1927 only - May 1 0:00 1:00 D +Rule Mont 1927 1932 - Sep lastSun 0:00 0 S +Rule Mont 1928 1931 - Apr lastSun 0:00 1:00 D +Rule Mont 1932 only - May 1 0:00 1:00 D +Rule Mont 1933 1940 - Apr lastSun 0:00 1:00 D +Rule Mont 1933 only - Oct 1 0:00 0 S +Rule Mont 1934 1939 - Sep lastSun 0:00 0 S Rule Mont 1946 1973 - Apr lastSun 2:00 1:00 D Rule Mont 1945 1948 - Sep lastSun 2:00 0 S Rule Mont 1949 1950 - Oct lastSun 2:00 0 S @@ -971,14 +989,19 @@ Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D # Shanks says 1923-09-19; assume it's a typo and that "-16" was meant. Rule Toronto 1922 1926 - Sep Sun>=15 2:00 0 S Rule Toronto 1924 1927 - May Sun>=1 2:00 1:00 D -Rule Toronto 1927 1928 - Sep lastSun 2:00 0 S -Rule Toronto 1928 only - Apr lastSun 2:00 1:00 D -Rule Toronto 1929 only - Apr lastSun 0:00 1:00 D -Rule Toronto 1929 only - Sep lastSun 0:00 0 S -Rule Toronto 1930 1937 - Apr lastSat 24:00 1:00 D -Rule Toronto 1930 1937 - Sep lastSat 24:00 0 S -Rule Toronto 1938 1940 - Apr lastSun 0:00 1:00 D -Rule Toronto 1938 1939 - Sep lastSun 0:00 0 S +# The 1927-to-1939 rules can be expressed more simply as +# Rule Toronto 1927 1937 - Sep Sun>=25 2:00 0 S +# Rule Toronto 1928 1937 - Apr Sun>=25 2:00 1:00 D +# Rule Toronto 1938 1940 - Apr lastSun 2:00 1:00 D +# Rule Toronto 1938 1939 - Sep lastSun 2:00 0 S +# The rules below avoid use of Sun>=25 +# (which pre-2004 versions of zic cannot handle). +Rule Toronto 1927 1932 - Sep lastSun 2:00 0 S +Rule Toronto 1928 1931 - Apr lastSun 2:00 1:00 D +Rule Toronto 1932 only - May 1 2:00 1:00 D +Rule Toronto 1933 1940 - Apr lastSun 2:00 1:00 D +Rule Toronto 1933 only - Oct 1 2:00 0 S +Rule Toronto 1934 1939 - Sep lastSun 2:00 0 S Rule Toronto 1945 1946 - Sep lastSun 2:00 0 S Rule Toronto 1946 only - Apr lastSun 2:00 1:00 D Rule Toronto 1947 1949 - Apr lastSun 0:00 1:00 D @@ -996,15 +1019,19 @@ Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S # Willett (1914-03) writes (p. 17) "In the Cities of Fort William, and # Port Arthur, Ontario, the principle of the Bill has been in # operation for the past three years, and in the City of Moose Jaw, -# Saskatchewan, for one year." Assume that the Thunder Bay region -# observed DST starting 1910, and Moose Jaw starting 1912, as this -# matches the Toronto Star report about Moose Jaw. For lack of better -# info, assume the Thunder Bay region used Willett's proposal, namely -# third Sunday in April at 02:00 to third Sunday in September at -# 03:00; also assume that they continued until Canada instituted -# uniform DST in 1918. -Rule Thunder 1910 1917 - Apr Sun>=15 2:00s 1:00 D -Rule Thunder 1910 1917 - Sep Sun>=15 2:00s 0 S +# Saskatchewan, for one year." + +# From David Bryan via Tory Tronrud, Director/Curator, +# Thunder Bay Museum (2003-11-12): +# There is some suggestion, however, that, by-law or not, daylight +# savings time was being practiced in Fort William and Port Arthur +# before 1909.... [I]n 1910, the line between the Eastern and Central +# Time Zones was permanently moved about two hundred miles west to +# include the Thunder Bay area.... When Canada adopted daylight +# savings time in 1916, Fort William and Port Arthur, having done so +# already, did not change their clocks.... During the Second World +# War,... [t]he cities agreed to implement DST during the summer +# months for the remainder of the war years. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Montreal -4:54:16 - LMT 1884 @@ -1021,9 +1048,8 @@ Zone America/Toronto -5:17:32 - LMT 1895 -5:00 Toronto E%sT 1974 -5:00 Canada E%sT Zone America/Thunder_Bay -5:57:00 - LMT 1895 - -5:00 Thunder E%sT 1918 - -5:00 Canada E%sT 1940 Sep 29 - -5:00 1:00 EDT 1942 Feb 9 2:00s + -6:00 - CST 1910 + -5:00 - EST 1942 -5:00 Canada E%sT 1970 -5:00 Mont E%sT 1973 -5:00 - EST 1974 |