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diff --git a/share/zoneinfo/northamerica b/share/zoneinfo/northamerica
index 5568a95c1d70..845587fa8205 100644
--- a/share/zoneinfo/northamerica
+++ b/share/zoneinfo/northamerica
@@ -1,19 +1,29 @@
-# @(#)northamerica 7.42
+# @(#)northamerica 7.51
# 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> (1994-08-17):
+# From Paul Eggert <eggert@twinsun.com> (1999-03-22):
# A reliable and entertaining source about time zones is
-# Derek Howse, Greenwich time and the discovery of the longitude,
-# Oxford University Press (1980).
+# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
###############################################################################
# United States
+# From Paul Eggert (1999-03-31):
+# Howse writes (pp 121-125) that time zones were invented by
+# Professor Charles Ferdinand Dowd (1825-1904),
+# Principal of Temple Grove Ladies' Seminary (Saratoga Springs, NY).
+# His pamphlet ``A System of National Time for Railroads'' (1870)
+# was the result of his proposals at the Convention of Railroad Trunk Lines
+# in New York City (1869-10). His 1870 proposal was based on Washington, DC,
+# but in 1872-05 he moved the proposed origin to Greenwich.
+# 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):
# A good source for time zone historical data in the US is
# Thomas G. Shanks, The American Atlas (5th edition),
@@ -294,6 +304,11 @@ Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00
# Indiana
#
+# For a map of Indiana's time zone regions, see:
+# <a href="http://www.mccsc.edu/time.html">
+# What time is it in Indiana?
+# </a> (1999-04-06)
+#
# From Paul Eggert (1995-12-19):
# Indiana generally observes either EST all year, or CST/CDT,
# but areas near Cincinnati and Louisville use those cities' timekeeping
@@ -393,15 +408,38 @@ Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00
-5:00 US E%sT 1974 Jan 6 2:00
-6:00 1:00 CDT 1974 Oct 27 2:00
-5:00 US E%sT
+# Wayne, Clinton, and Russell Counties, Kentucky
+# From
+# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=99-26945-filed">
+# Federal Register Doc. 99-26945
+# </a> (1999-10-14 08:45-04)
+# In response to a petition by the Wayne County, Kentucky, Fiscal Court,
+# the Department of Transportation (DOT) proposed to move Wayne County,
+# Kentucky, from the Central Time Zone to the Eastern Time Zone.... Now
+# the earliest date that the proposed change might take effect is
+# October 29, 2000.
+#
+# From
+# <a href="http://www.lake-cumberland.com/life/archive/news990129time.shtml">
+# Lake Cumberland LIFE
+# </a> (1999-01-29) via WKYM-101.7:
+# Clinton County has joined Wayne County in asking the DoT to change from
+# the Central to the Eastern time zone.... The Wayne County government made
+# the same request in December. And while Russell County officials have not
+# taken action, the majority of respondents to a poll conducted there in
+# August indicated they would like to change to "fast time" also.
+# The three Lake Cumberland counties are the farthest east of any U.S.
+# location in the Central time zone.
# Michigan
#
# From Bob Devine (1988-01-28):
# Michigan didn't observe DST from 1968 to 1973.
#
-# From Paul Eggert (1995-12-19):
-# Shanks writes that Michigan started using standard time on 1885 Sep 18,
-# but Howse (p 126) writes that Detroit kept
+# From Paul Eggert (1999-03-31):
+# Shanks writes that Michigan started using standard time on 1885-09-18,
+# but Howse writes (pp 124-125, referring to Popular Astronomy, 1901-01)
+# that Detroit kept
#
# local time until 1900 when the City Council decreed that clocks should
# be put back twenty-eight minutes to Central Standard Time. Half the
@@ -466,12 +504,12 @@ Link Pacific/Honolulu HST
################################################################################
-# From Paul Eggert <eggert@twinsun.com> (1996-11-22):
+# From Paul Eggert <eggert@twinsun.com> (1999-10-29):
# A good source for time zone historical data outside the US is
-# Thomas G. Shanks, The International Atlas (4th edition),
-# San Diego: ACS Publications, Inc. (1995).
+# Thomas G. Shanks, The International Atlas (5th edition),
+# San Diego: ACS Publications, Inc. (1999).
#
-# Gwillim Law <LAW@encmail.encompass.com> writes that a good source
+# Gwillim Law <Gwil_Law@bridge-point.com> 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
@@ -520,7 +558,7 @@ Link Pacific/Honolulu HST
# From Paul Eggert <eggert@twinsun.com> (1994-11-22):
# Alas, this sort of thing must be handled by localization software.
-# The data for Canada are all from Shanks (1991).
+# The data for Canada are all from Shanks.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -666,7 +704,7 @@ Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
# says that Ontario east of 90W uses EST/EDT, and west of 90W uses CST/CDT.
# Officially Atikokan is therefore on CST/CDT, and most likely this report
# concerns a non-official time observed as a matter of local practice.
-# For what it's worth, Shanks (1995) says that Atikokan has agreed with
+# For what it's worth, Shanks says that Atikokan has agreed with
# Rainy River ever since standard time was introduced.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -838,7 +876,7 @@ Zone America/Edmonton -7:33:52 - LMT 1906 Sep
# From Paul Eggert (1996-06-12):
# Shanks writes that since 1970 most of this region has been like Vancouver.
-# Dawswon Creek uses MST. Much of east BC is like Edmonton.
+# Dawson Creek uses MST. Much of east BC is like Edmonton.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Vanc 1918 only - Apr 14 2:00 1:00 D
@@ -859,11 +897,10 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884
-7:00 - MST
-# Northwest Territories, Yukon
+# Northwest Territories, Nunavut, Yukon
-# From Paul Eggert (1996-10-07):
+# From Paul Eggert (1999-10-29):
# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
-# Shanks's table for Watson Lake is corrupted, so we have no data there.
# Mathew Englander <mathew@io.org> (1996-10-07) gives the following refs:
# * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68,
# c. 7 defines Yukon standard time as UTC-9. This is still valid;
@@ -873,6 +910,56 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884
# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
# Shanks says Yukon's 1973-10-28 switch was at 2:00; go with Englander.
+# From Rives McDow (1999-09-04):
+# Nunavut ... moved ... to incorporate the whole territory into one time zone.
+# <a href="http://www.nunatsiaq.com/nunavut/nvt90903_13.html">
+# Nunavut moves to single time zone Oct. 31
+# </a>
+#
+# From Antoine Leca (1999-09-06):
+# We then need to create a new timezone for the Kitikmeot region of Nunavut
+# to differentiate it from the Yellowknife region.
+
+# From Paul Eggert (1999-09-20):
+# <a href="http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html">
+# Basic Facts: The New Territory
+# </a> (1999) reports that Pangnirtung operates on Eastern time,
+# and that Coral Harbour does not observe DST. We don't know when
+# Pangnirtung switched to Eastern time; we'll guess 1995.
+# We'll ignore the claim about Coral Harbour for now,
+# since we have no further info.
+
+# From Rives McDow (1999-11-08):
+# On October 31, when the rest of Nunavut went to Central time,
+# Pangnirtung wobbled. Here is the result of their wobble:
+#
+# The following businesses and organizations in Pangnirtung use Central Time:
+#
+# First Air, Power Corp, Nunavut Construction, Health Center, RCMP,
+# Eastern Arctic National Parks, A & D Specialist
+#
+# The following businesses and organizations in Pangnirtung use Eastern Time:
+#
+# Hamlet office, All other businesses, Both schools, Airport operator
+#
+# This has made for an interesting situation there, which warranted the news.
+# No one there that I spoke with seems concerned, or has plans to
+# change the local methods of keeping time, as it evidently does not
+# really interfere with any activities or make things difficult locally.
+# They plan to celebrate New Year's turn-over twice, one hour apart,
+# so it appears that the situation will last at least that long.
+# The Nunavut Intergovernmental Affairs hopes that they will "come to
+# their senses", but the locals evidently don't see any problem with
+# the current state of affairs.
+
+# From Michaela Rodrigue, writing in the
+# <a href="http://www.nunatsiaq.com/archives/nunavut991130/nvt91119_17.html">
+# Nunatsiaq News (1999-11-19)</a>:
+# Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
+# central - or Nunavut time - for government offices, and eastern time
+# for municipal offices and schools.... Igloolik [was similar but then]
+# made the switch to central time on Saturday, Nov. 6.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule NT_YK 1918 only - Apr 14 2:00 1:00 D
Rule NT_YK 1918 only - Oct 27 2:00 0 S
@@ -887,11 +974,17 @@ Rule NT_YK 1980 max - Oct lastSun 2:00 0 S
Rule NT_YK 1987 max - Apr Sun>=1 2:00 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Pangnirtung -4:22:56 - LMT 1884
- -4:00 NT_YK A%sT
-Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay
- -5:00 NT_YK E%sT
+ -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
+ -5:00 Canada E%sT 1999 Oct 31 2:00
+ -6:00 Canada C%sT
+Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay before 1987
+ -5:00 NT_YK E%sT 1999 Oct 31 2:00
+ -6:00 Canada C%sT
Zone America/Rankin_Inlet -6:08:40 - LMT 1884
-6:00 NT_YK C%sT
+Zone America/Cambridge_Bay -7:00:20 - LMT 1884
+ -7:00 NT_YK M%sT 1999 Oct 31 2:00
+ -6:00 Canada C%sT
Zone America/Yellowknife -7:37:24 - LMT 1884
-7:00 NT_YK M%sT
Zone America/Inuvik -8:54:00 - LMT 1884
@@ -921,7 +1014,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
# The Federal District (where Mexico City is) has observed [DST] several
# times but not recently.
#
-# I don't where to drawn the line in the North Baja area. 28th latitude
+# I don't where to draw the line in the North Baja area. 28th latitude
# sounds good -- but it may be higher (how far [d]o radio stations from
# San Diego affect culture?).
#
@@ -956,37 +1049,33 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
# a zone that's GMT-8 with DST; a zone that's always GMT-7;
# a zone that's GMT-6 with DST; and a zone that's always GMT-6.
-# From Paul Eggert <eggert@twinsun.com> (1993-11-18):
-# Shanks also says there are four zones, but disagrees about the fourth.
-# Instead of GMT-6 with DST, he says there's GMT-8 without DST.
-
# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15):
# A guy from our Mexico subsidiary finally found the Presidential Decree
# outlining the timezone changes in Mexico.
-#
+#
# ------------- Begin Forwarded Message -------------
-#
+#
# I finally got my hands on the Official Presidential Decree that sets up the
# rules for the DST changes. The rules are:
-#
+#
# 1. The country is divided in 3 timezones:
# - Baja California Norte (the Mexico/BajaNorte TZ)
# - Baja California Sur, Nayarit, Sinaloa and Sonora (the Mexico/BajaSur TZ)
# - The rest of the country (the Mexico/General TZ)
-#
+#
# 2. From the first Sunday in April at 2:00 AM to the last Sunday in October
# at 2:00 AM, the times in each zone are as follows:
# BajaNorte: GMT+7
# BajaSur: GMT+6
# General: GMT+5
-#
+#
# 3. The rest of the year, the times are as follows:
# BajaNorte: GMT+8
# BajaSur: GMT+7
# General: GMT+6
-#
+#
# The Decree was published in Mexico's Official Newspaper on January 4th.
-#
+#
# -------------- End Forwarded Message --------------
# From Paul Eggert (1996-06-12):
# For an English translation of the decree, see
@@ -998,7 +1087,13 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
# The State of Quintana Roo has reverted back to central STD and DST times
# (i.e. UTC -0600 and -0500 as of 1998-08-02).
-# From Shanks (1991):
+# From Rives McDow (2000-01-10):
+# Effective April 4, 1999 at 2:00 AM local time, Sonora changed to the time
+# zone 5 hours from the International Date Line, and will not observe daylight
+# savings time so as to stay on the same time zone as the southern part of
+# Arizona year round.
+
+# From Shanks:
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mexico 1939 only - Feb 5 0:00 1:00 D
Rule Mexico 1939 only - Jun 25 0:00 0 S
@@ -1011,12 +1106,11 @@ Rule Mexico 1950 only - Jul 30 0:00 0 S
Rule Mexico 1996 max - Apr Sun>=1 2:00 1:00 D
Rule Mexico 1996 max - Oct lastSun 2:00 0 S
#
-Rule BajaN 1950 1966 - Apr lastSun 2:00 1:00 D
-Rule BajaN 1950 1961 - Sep lastSun 2:00 0 S
-Rule BajaN 1961 1966 - Oct lastSun 2:00 0 S
+Rule BajaN 1954 1961 - Apr lastSun 2:00 1:00 D
+Rule BajaN 1954 1961 - Sep lastSun 2:00 0 S
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Quintana Roo
-Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 1:12:42
+Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
-6:00 - CST 1996
-6:00 Mexico C%sT 1997 Oct lastSun 2:00
-5:00 Mexico E%sT 1998 Aug 2 2:00
@@ -1030,7 +1124,7 @@ Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
-7:00 - MST 1932 Mar 30 23:00
-6:00 Mexico C%sT
# Chihuahua
-Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:44
+Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:40
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
-7:00 - MST 1931 May 1 23:00
@@ -1040,7 +1134,19 @@ Zone America/Chihuahua -7:04:20 - LMT 1921 Dec 31 23:55:44
-6:00 Mexico C%sT 1998
-6:00 - CST 1998 Apr Sun>=1 3:00
-7:00 Mexico M%sT
-# S Baja California, Nayarit, Sinaloa, Sonora
+# Sonora
+Zone America/Hermosillo -7:23:52 - LMT 1921 Dec 31 23:36:08
+ -7:00 - MST 1927 Jun 10 23:00
+ -6:00 - CST 1930 Nov 15
+ -7:00 - MST 1931 May 1 23:00
+ -6:00 - CST 1931 Oct
+ -7:00 - MST 1932 Mar 30 23:00
+ -6:00 - CST 1942 Apr
+ -7:00 - MST 1949 Jan 14
+ -8:00 - PST 1970
+ -7:00 Mexico M%sT 1999
+ -7:00 - MST
+# S Baja California, Nayarit, Sinaloa
Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
-7:00 - MST 1927 Jun 10 23:00
-6:00 - CST 1930 Nov 15
@@ -1051,23 +1157,15 @@ Zone America/Mazatlan -7:05:40 - LMT 1921 Dec 31 23:54:20
-7:00 - MST 1949 Jan 14
-8:00 - PST 1970
-7:00 Mexico M%sT
-# N Baja California
+# Baja California
Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
-8:00 - PST 1927 Jun 10 23:00
-7:00 - MST 1930 Nov 16
-8:00 - PST 1942 Apr
-7:00 - MST 1949 Jan 14
- -8:00 BajaN P%sT 1967 Apr lastSun 2:00
+ -8:00 BajaN P%sT 1976
-8:00 US P%sT 1996
-8:00 Mexico P%sT
-# Baja California
-Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
- -8:00 - PST 1927 Jun 10 23:00
- -7:00 - MST 1930 Nov 16
- -8:00 - PST 1942 Apr
- -7:00 - MST 1949 Jan 14
- -8:00 - PST 1996
- -8:00 Mexico P%sT
#
# Revillagigedo Is
# no information
@@ -1132,8 +1230,6 @@ Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
-5:00 - EST
# Costa Rica
-# Shanks gives some very odd dates for 1991, and stops there.
-# For now, we won't guess further.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D
Rule CR 1979 1980 - Jun Sun>=1 0:00 0 S
@@ -1144,23 +1240,24 @@ Rule CR 1992 only - Mar 15 0:00 0 S
# There are too many San Joses elsewhere, so we'll use `Costa Rica'.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose
- -5:36 - SJMT 1921 Jan 15 # San Jose Mean Time
+ -5:36:20 - SJMT 1921 Jan 15 # San Jose Mean Time
-6:00 CR C%sT
# Coco
# no information; probably like America/Costa_Rica
# Cuba
-# From Bob Devine (1988-01-28):
-# . . .DST is from 2nd Sunday in May to 2nd Sunday in October since 1981.
-# Change at midnight. In 1979 & 1980, started at 3rd Sunday in March
-# (I think).
-
-# From U. S. Naval Observatory (1989-01-19):
-# CUBA 5 H BEHIND UTC
-# CUBA 4 H BEHIND UTC MAR 20 - OCT 8
+# From Arthur David Olson (1999-03-29):
+# The 1999-03-28 exhibition baseball game held in Havana, Cuba, between
+# the Cuban National Team and the Baltimore Orioles was carried live on
+# the Orioles Radio Network, including affiliate WTOP in Washington, DC.
+# During the game, play-by-play announcer Jim Hunter noted that
+# "We'll be losing two hours of sleep...Cuba switched to Daylight Saving
+# Time today." (The "two hour" remark referred to losing one hour of
+# sleep on 1999-03-28--when the announcers were in Cuba as it switched
+# to DST--and one more hour on 1999-04-04--when the announcers will have
+# returned to Baltimore, which switches on that date.)
-# From Shanks (1991):
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Cuba 1928 only - Jun 10 0:00 1:00 D
Rule Cuba 1928 only - Oct 10 0:00 0 S
@@ -1188,13 +1285,13 @@ Rule Cuba 1990 1997 - Apr Sun>=1 0:00 1:00 D
Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S
Rule Cuba 1996 only - Oct 6 0:00s 0 S
Rule Cuba 1997 only - Oct 12 0:00s 0 S
-Rule Cuba 1998 only - Mar 29 0:00 1:00 D
+Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D
Rule Cuba 1998 max - Oct lastSun 0:00s 0 S
-Rule Cuba 1999 max - Apr Sun>=1 0:00s 1:00 D
+Rule Cuba 2000 max - Apr Sun>=1 0:00s 1:00 D
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Havana -5:29:28 - LMT 1890
- -5:30 - HMT 1925 Jul 19 12:00 # Havana MT
+ -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
-5:00 Cuba C%sT
# Dominica
@@ -1252,7 +1349,7 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5
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 says AT is 2:00, but IATA SSIM (1991/1996) says 1:00s. Go with IATA.
+# 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
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -1276,11 +1373,11 @@ Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
# From U. S. Naval Observatory (1989-01-19):
# JAMAICA 5 H BEHIND UTC
-# From Shanks (1991):
+# From Shanks:
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Jamaica -5:07:12 - LMT 1890 # Kingston
-5:07:12 - KMT 1912 Feb # Kingston Mean Time
- -5:00 - EST 1974 Jan 6 2:00
+ -5:00 - EST 1974 Apr 28 2:00
-5:00 US E%sT 1984
-5:00 - EST
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 14:54:44 +0000