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-rw-r--r--share/zoneinfo/northamerica96
1 files changed, 61 insertions, 35 deletions
diff --git a/share/zoneinfo/northamerica b/share/zoneinfo/northamerica
index ca4ad5de57f4..6e755b04b3c8 100644
--- a/share/zoneinfo/northamerica
+++ b/share/zoneinfo/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