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-# @(#)northamerica 8.23
-# <pre>
-
-# 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 (1999-03-22):
-# A reliable and entertaining source about time zones is
-# 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 (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 (2006-03-22):
-# 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 most of the pre-1991 US entries below.
-
-# From Paul Eggert (2001-03-06):
-# Daylight Saving Time was first suggested as a joke by Benjamin Franklin
-# in his whimsical essay ``An Economical Project for Diminishing the Cost
-# of Light'' published in the Journal de Paris (1784-04-26).
-# Not everyone is happy with the results:
-#
-# I don't really care how time is reckoned so long as there is some
-# agreement about it, but I object to being told that I am saving
-# daylight when my reason tells me that I am doing nothing of the kind.
-# I even object to the implication that I am wasting something
-# valuable if I stay in bed after the sun has risen. As an admirer
-# of moonlight I resent the bossy insistence of those who want to
-# reduce my time for enjoying it. At the back of the Daylight Saving
-# scheme I detect the bony, blue-fingered hand of Puritanism, eager
-# 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,
-# 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">
-# Ten years of daylight saving from the Pittsburgh standpoint
-# (Carnegie Library of Pittsburgh, 1927)</a>.
-#
-# Shanks says that DST was called "War Time" in the US in 1918 and 1919.
-# However, DST was imposed by the Standard Time Act of 1918, which
-# was the first nationwide legal time standard, and apparently
-# time was just called "Standard Time" or "Daylight Saving Time".
-
-# From Arthur David Olson:
-# US Daylight Saving Time ended on the last Sunday of *October* in 1974.
-# See, for example, the front page of the Saturday, 1974-10-26
-# and Sunday, 1974-10-27 editions of the Washington Post.
-
-# From Arthur David Olson:
-# Before the Uniform Time Act of 1966 took effect in 1967, observance of
-# Daylight Saving Time in the US was by local option, except during wartime.
-
-# From Arthur David Olson (2000-09-25):
-# Last night I heard part of a rebroadcast of a 1945 Arch Oboler radio drama.
-# In the introduction, Oboler spoke of "Eastern Peace Time."
-# An AltaVista search turned up
-# <a href="http://rowayton.org/rhs/hstaug45.html">:
-# "When the time is announced over the radio now, it is 'Eastern Peace
-# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful."
-# </a> (August 1945) by way of confirmation.
-
-# From Joseph Gallant citing
-# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987):
-# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set
-# to switch to London for Attlee's address, but the American people
-# never got to hear his speech live. According to one press account,
-# CBS' Bob Trout was first to announce the word of Japan's surrender,
-# but a few seconds later, NBC, ABC and Mutual also flashed the word
-# of surrender, all of whom interrupting the bells of Big Ben in
-# London which were to precede Mr. Attlee's speech.
-
-# From Paul Eggert (2003-02-09): It was Robert St John, not Bob Trout. From
-# Myrna Oliver's obituary of St John on page B16 of today's Los Angeles Times:
-#
-# ... a war-weary U.S. clung to radios, awaiting word of Japan's surrender.
-# Any announcement from Asia would reach St. John's New York newsroom on a
-# wire service teletype machine, which had prescribed signals for major news.
-# Associated Press, for example, would ring five bells before spewing out
-# typed copy of an important story, and 10 bells for news "of transcendental
-# importance."
-#
-# On Aug. 14, stalling while talking steadily into the NBC networks' open
-# microphone, St. John heard five bells and waited only to hear a sixth bell,
-# before announcing confidently: "Ladies and gentlemen, World War II is over.
-# The Japanese have agreed to our surrender terms."
-#
-# He had scored a 20-second scoop on other broadcasters.
-
-# From Arthur David Olson (2005-08-22):
-# Paul has been careful to use the "US" rules only in those locations
-# that are part of the United States; this reflects the real scope of
-# U.S. government action. So even though the "US" rules have changed
-# in the latest release, other countries won't be affected.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
-Rule US 1918 1919 - Oct lastSun 2:00 0 S
-Rule US 1942 only - Feb 9 2:00 1:00 W # War
-Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule US 1945 only - Sep 30 2:00 0 S
-Rule US 1967 2006 - Oct lastSun 2:00 0 S
-Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
-Rule US 1974 only - Jan 6 2:00 1:00 D
-Rule US 1975 only - Feb 23 2:00 1:00 D
-Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
-Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
-Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
-Rule US 2007 max - Nov Sun>=1 2:00 0 S
-
-# From Arthur David Olson, 2005-12-19
-# We generate the files specified below to guard against old files with
-# obsolete information being left in the time zone binary directory.
-# We limit the list to names that have appeared in previous versions of
-# this time zone package.
-# We do these as separate Zones rather than as Links to avoid problems if
-# a particular place changes whether it observes DST.
-# We put these specifications here in the northamerica file both to
-# increase the chances that they'll actually get compiled and to
-# avoid the need to duplicate the US rules in another file.
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone EST -5:00 - EST
-Zone MST -7:00 - MST
-Zone HST -10:00 - HST
-Zone EST5EDT -5:00 US E%sT
-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
-# USA CENTRAL 6 H BEHIND UTC CHICAGO, HOUSTON
-# USA CENTRAL 5 H BEHIND UTC APR 3 - OCT 30
-# USA MOUNTAIN 7 H BEHIND UTC DENVER
-# USA MOUNTAIN 6 H BEHIND UTC APR 3 - OCT 30
-# USA PACIFIC 8 H BEHIND UTC L.A., SAN FRANCISCO
-# USA PACIFIC 7 H BEHIND UTC APR 3 - OCT 30
-# USA ALASKA STD 9 H BEHIND UTC MOST OF ALASKA (AKST)
-# USA ALASKA STD 8 H BEHIND UTC APR 3 - OCT 30 (AKDT)
-# USA ALEUTIAN 10 H BEHIND UTC ISLANDS WEST OF 170W
-# USA - " - 9 H BEHIND UTC APR 3 - OCT 30
-# USA HAWAII 10 H BEHIND UTC
-# USA BERING 11 H BEHIND UTC SAMOA, MIDWAY
-
-# From Arthur David Olson (1989-01-21):
-# The above dates are for 1988.
-# Note the "AKST" and "AKDT" abbreviations, the claim that there's
-# no DST in Samoa, and the claim that there is DST in Alaska and the
-# Aleutians.
-
-# From Arthur David Olson (1988-02-13):
-# Legal standard time zone names, from United States Code (1982 Edition and
-# Supplement III), Title 15, Chapter 6, Section 260 and forward. First, names
-# up to 1967-04-01 (when most provisions of the Uniform Time Act of 1966
-# took effect), as explained in sections 263 and 261:
-# (none)
-# United States standard eastern time
-# United States standard mountain time
-# United States standard central time
-# United States standard Pacific time
-# (none)
-# United States standard Alaska time
-# (none)
-# Next, names from 1967-04-01 until 1983-11-30 (the date for
-# public law 98-181):
-# Atlantic standard time
-# eastern standard time
-# central standard time
-# mountain standard time
-# Pacific standard time
-# Yukon standard time
-# Alaska-Hawaii standard time
-# Bering standard time
-# And after 1983-11-30:
-# Atlantic standard time
-# eastern standard time
-# central standard time
-# mountain standard time
-# Pacific standard time
-# Alaska standard time
-# Hawaii-Aleutian standard time
-# Samoa standard time
-# The law doesn't give abbreviations.
-#
-# 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.
-# See the file "australasia".
-
-# From Arthur David Olson, 2005-08-09
-# The following was signed into law on 2005-08-08.
-#
-# H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS.
-# (a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15
-# U.S.C. 260a(a)) is amended--
-# (1) by striking `first Sunday of April' and inserting `second
-# Sunday of March'; and
-# (2) by striking `last Sunday of October' and inserting `first
-# Sunday of November'.
-# (b) Effective Date- Subsection (a) shall take effect 1 year after the
-# date of enactment of this Act or March 1, 2007, whichever is later.
-# (c) Report to Congress- Not later than 9 months after the effective
-# date stated in subsection (b), the Secretary shall report to Congress
-# on the impact of this section on energy consumption in the United
-# States.
-# (d) Right to Revert- Congress retains the right to revert the
-# Daylight Saving Time back to the 2005 time schedules once the
-# Department study is complete.
-
-# US eastern time, represented by New York
-
-# Connecticut, Delaware, District of Columbia, most of Florida,
-# Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky
-# (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts,
-# New Hampshire, New Jersey, New York, North Carolina, Ohio,
-# Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
-# Vermont, Virginia, West Virginia
-
-# From Dave Cantor (2004-11-02):
-# Early this summer I had the occasion to visit the Mount Washington
-# Observatory weather station atop (of course!) Mount Washington [, NH]....
-# One of the staff members said that the station was on Eastern Standard Time
-# and didn't change their clocks for Daylight Saving ... so that their
-# reports will always have times which are 5 hours behind UTC.
-
-# From Paul Eggert (2005-08-26):
-# According to today's Huntsville Times
-# <http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1>
-# a few towns on Alabama's "eastern border with Georgia, such as Phenix City
-# in Russell County, Lanett in Chambers County and some towns in Lee County,
-# set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
-# 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."
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
-Rule NYC 1920 only - Oct lastSun 2:00 0 S
-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 12:03:58
- -5:00 US E%sT 1920
- -5:00 NYC E%sT 1942
- -5:00 US E%sT 1946
- -5:00 NYC E%sT 1967
- -5:00 US E%sT
-
-# US central time, represented by Chicago
-
-# 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
-# Nebraska, eastern North Dakota, Oklahoma, eastern South Dakota,
-# western Tennessee, most of Texas, Wisconsin
-
-# From Larry M. Smith (2006-04-26) re Wisconsin:
-# http://www.legis.state.wi.us/statutes/Stat0175.pdf ...
-# is currently enforced at the 01:00 time of change. Because the local
-# "bar time" in the state corresponds to 02:00, a number of citations
-# are issued for the "sale of class 'B' alcohol after prohibited
-# hours" within the deviated hour of this change every year....
-#
-# From Douglas R. Bomberg (2007-03-12):
-# Wisconsin has enacted (nearly eleventh-hour) legislation to get WI
-# Statue 175 closer in synch with the US Congress' intent....
-# http://www.legis.state.wi.us/2007/data/acts/07Act3.pdf
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Chicago 1920 only - Jun 13 2:00 1:00 D
-Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
-Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
-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 12:09:24
- -6:00 US C%sT 1920
- -6:00 Chicago C%sT 1936 Mar 1 2:00
- -5:00 - EST 1936 Nov 15 2:00
- -6:00 Chicago C%sT 1942
- -6:00 US C%sT 1946
- -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 12:14:48
- -7:00 US M%sT 1992 Oct 25 02:00
- -6:00 US C%sT
-# Morton County, ND, switched from mountain to central time on
-# 2003-10-26, except for the area around Mandan which was already central time.
-# See <http://dmses.dot.gov/docimages/p63/135818.pdf>.
-# Officially this switch also included part of Sioux County, and
-# Jones, Mellette, and Todd Counties in South Dakota;
-# but in practice these other counties were already observing central time.
-# See <http://www.epa.gov/fedrgstr/EPA-IMPACT/2003/October/Day-28/i27056.htm>.
-Zone America/North_Dakota/New_Salem -6:45:39 - LMT 1883 Nov 18 12:14:21
- -7:00 US M%sT 2003 Oct 26 02:00
- -6:00 US C%sT
-
-# US mountain time, represented by Denver
-#
-# Colorado, far western Kansas, Montana, western
-# Nebraska, Nevada border (Jackpot, Owyhee, and Mountain City),
-# New Mexico, southwestern North Dakota,
-# western South Dakota, far western Texas (El Paso County, Hudspeth County,
-# and Pine Springs and Nickel Creek in Culberson County), Utah, Wyoming
-#
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Denver 1920 1921 - Mar lastSun 2:00 1:00 D
-Rule Denver 1920 only - Oct lastSun 2:00 0 S
-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 12:00:04
- -7:00 US M%sT 1920
- -7:00 Denver M%sT 1942
- -7:00 US M%sT 1946
- -7:00 Denver M%sT 1967
- -7:00 US M%sT
-
-# US Pacific time, represented by Los Angeles
-#
-# California, northern Idaho (Benewah, Bonner, Boundary, Clearwater,
-# Idaho, Kootenai, Latah, Lewis, Nez Perce, and Shoshone counties,
-# and the northern three-quarters of Idaho county),
-# 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
-Rule CA 1949 only - Jan 1 2:00 0 S
-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 12:07:02
- -8:00 US P%sT 1946
- -8:00 CA P%sT 1967
- -8:00 US P%sT
-
-# Alaska
-# AK%sT is the modern abbreviation for -9:00 per USNO.
-#
-# From Paul Eggert (2001-05-30):
-# Howse writes that Alaska switched from the Julian to the Gregorian calendar,
-# and from east-of-GMT to west-of-GMT days, when the US bought it from Russia.
-# This was on 1867-10-18, a Friday; the previous day was 1867-10-06 Julian,
-# also a Friday. Include only the time zone part of this transition,
-# ignoring the switch from Julian to Gregorian, since we can't represent
-# the Julian calendar.
-#
-# As far as we know, none of the exact locations mentioned below were
-# permanently inhabited in 1867 by anyone using either calendar.
-# (Yakutat was colonized by the Russians in 1799, but the settlement
-# was destroyed in 1805 by a Yakutat-kon war party.) However, there
-# were nearby inhabitants in some cases and for our purposes perhaps
-# it's best to simply use the official transition.
-#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
- -8:57:41 - LMT 1900 Aug 20 12:00
- -8:00 - PST 1942
- -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 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
- -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 - 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
- -11:00 - NST 1942
- -11:00 US N%sT 1946
- -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
- -11:00 - NST 1942
- -11:00 US N%sT 1946
- -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
-# The following switches don't quite make our 1970 cutoff.
-#
-# Shanks writes that part of southwest Alaska (e.g. Aniak)
-# switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
-# and another part (e.g. Akiak) made the same switch five weeks later.
-#
-# From David Flater (2004-11-09):
-# In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska
-# Historic Preservation Commission, provided this information, which
-# suggests that Unalaska deviated from statutory time from early 1967
-# possibly until 1983:
-#
-# Minutes of the Unalaska City Council Meeting, January 10, 1967:
-# "Except for St. Paul and Akutan, Unalaska is the only important
-# location not on Alaska Standard Time. The following resolution was
-# made by William Robinson and seconded by Henry Swanson: Be it
-# resolved that the City of Unalaska hereby goes to Alaska Standard
-# Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday,
-# January 14, Alaska Standard Time.) This resolution was passed with
-# three votes for and one against."
-
-# Hawaii
-#
-# From Arthur David Olson:
-# And then there's Hawaii.
-# DST was observed for one day in 1933;
-# standard time was changed by half an hour in 1947;
-# it's always standard as of 1986.
-#
-# From Paul Eggert:
-# Shanks says the 1933 experiment lasted for three weeks. Go with Shanks.
-#
-Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
- -10:30 - HST 1933 Apr 30 2:00
- -10:30 1:00 HDT 1933 May 21 2:00
- -10:30 US H%sT 1947 Jun 8 2:00
- -10:00 - HST
-
-# Now we turn to US areas that have diverged from the consensus since 1970.
-
-# Arizona mostly uses MST.
-
-# From Paul Eggert (2002-10-20):
-#
-# The information in the rest of this paragraph is derived from the
-# <a href="http://www.dlapr.lib.az.us/links/daylight.htm">
-# Daylight Saving Time web page (2002-01-23)</a> maintained by the
-# Arizona State Library, Archives and Public Records.
-# Between 1944-01-01 and 1944-04-01 the State of Arizona used standard
-# time, but by federal law railroads, airlines, bus lines, military
-# personnel, and some engaged in interstate commerce continued to
-# observe war (i.e., daylight saving) time. The 1944-03-17 Phoenix
-# Gazette says that was the date the law changed, and that 04-01 was
-# the date the state's clocks would change. In 1945 the State of
-# Arizona used standard time all year, again with exceptions only as
-# mandated by federal law. Arizona observed DST in 1967, but Arizona
-# Laws 1968, ch. 183 (effective 1968-03-21) repealed DST.
-#
-# 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 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
- -7:00 - MST 1967
- -7:00 US M%sT 1968 Mar 21
- -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 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 (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 the southern
-# quarter of Idaho county) and eastern Oregon (most of Malheur County)
-# switched four weeks late in 1974.
-#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-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
- -7:00 US M%sT
-
-# 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> (2006-03-01)
-#
-# From Paul Eggert (2007-08-17):
-# Since 1970, most of Indiana has been like America/Indiana/Indianapolis,
-# with the following exceptions:
-#
-# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer,
-# Vandenburgh, and Warrick counties have been like America/Chicago.
-#
-# - Dearborn and Ohio counties have been like America/New_York.
-#
-# - Clark, Floyd, and Harrison counties have been like
-# America/Kentucky/Louisville.
-#
-# - Crawford, Daviess, Dubois, Knox, Martin, Perry, Pike, Pulaski, Starke,
-# and Switzerland counties have their own time zone histories as noted below.
-#
-# Shanks partitioned Indiana into 345 regions, each with its own time history,
-# and wrote ``Even newspaper reports present contradictory information.''
-# Those Hoosiers! Such a flighty and changeable people!
-# Fortunately, most of the complexity occurred before our cutoff date of 1970.
-#
-# Other than Indianapolis, the Indiana place names are so nondescript
-# that they would be ambiguous if we left them at the `America' level.
-# So we reluctantly put them all in a subdirectory `America/Indiana'.
-
-# From Paul Eggert (2005-08-16):
-# http://www.mccsc.edu/time.html says that Indiana will use DST starting 2006.
-
-# From Nathan Stratton Treadway (2006-03-30):
-# http://www.dot.gov/affairs/dot0406.htm [3705 B]
-# From Deborah Goldsmith (2006-01-18):
-# http://dmses.dot.gov/docimages/pdf95/382329_web.pdf [2.9 MB]
-# From Paul Eggert (2006-01-20):
-# It says "DOT is relocating the time zone boundary in Indiana to move Starke,
-# Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the
-# Eastern Time Zone to the Central Time Zone.... The effective date of
-# this rule is 2:OO a.m. EST Sunday, April 2, 2006, which is the
-# changeover date from standard time to Daylight Saving Time."
-# Strictly speaking, this means the affected counties will change their
-# clocks twice that night, but this obviously is in error. The intent
-# is that 01:59:59 EST be followed by 02:00:00 CDT.
-
-# From Gwillim Law (2007-02-10):
-# The Associated Press has been reporting that Pulaski County, Indiana is
-# going to switch from Central to Eastern Time on March 11, 2007....
-# http://www.indystar.com/apps/pbcs.dll/article?AID=/20070207/LOCAL190108/702070524/0/LOCAL
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-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/Indiana/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
- -6:00 Indianapolis C%sT 1955 Apr 24 2:00
- -5:00 - EST 1957 Sep 29 2:00
- -6:00 - CST 1958 Apr 27 2:00
- -5:00 - EST 1969
- -5:00 US E%sT 1971
- -5:00 - EST 2006
- -5:00 US E%sT
-#
-# Eastern Crawford County, Indiana, left its clocks alone in 1974,
-# as well as from 1976 through 2005.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D
-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 12:14:37
- -6:00 US C%sT 1951
- -6:00 Marengo C%sT 1961 Apr 30 2:00
- -5:00 - EST 1969
- -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 1976
- -5:00 - EST 2006
- -5:00 US E%sT
-#
-# Daviess, Dubois, Knox, and Martin Counties, Indiana,
-# switched from eastern to central time in April 2006, then switched back
-# in November 2007.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Vincennes 1946 only - Apr lastSun 2:00 1:00 D
-Rule Vincennes 1946 only - Sep lastSun 2:00 0 S
-Rule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D
-Rule Vincennes 1953 1959 - Sep lastSun 2:00 0 S
-Rule Vincennes 1955 only - May 1 0:00 1:00 D
-Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D
-Rule Vincennes 1960 only - Oct lastSun 2:00 0 S
-Rule Vincennes 1961 only - Sep lastSun 2:00 0 S
-Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53
- -6:00 US C%sT 1946
- -6:00 Vincennes C%sT 1964 Apr 26 2:00
- -5:00 - EST 1969
- -5:00 US E%sT 1971
- -5:00 - EST 2006 Apr 2 2:00
- -6:00 US C%sT 2007 Nov 4 2:00
- -5:00 US E%sT
-#
-# Perry County, Indiana, switched from eastern to central time in April 2006.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Perry 1946 only - Apr lastSun 2:00 1:00 D
-Rule Perry 1946 only - Sep lastSun 2:00 0 S
-Rule Perry 1953 1954 - Apr lastSun 2:00 1:00 D
-Rule Perry 1953 1959 - Sep lastSun 2:00 0 S
-Rule Perry 1955 only - May 1 0:00 1:00 D
-Rule Perry 1956 1963 - Apr lastSun 2:00 1:00 D
-Rule Perry 1960 only - Oct lastSun 2:00 0 S
-Rule Perry 1961 only - Sep lastSun 2:00 0 S
-Rule Perry 1962 1963 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Indiana/Tell_City -5:47:03 - LMT 1883 Nov 18 12:12:57
- -6:00 US C%sT 1946
- -6:00 Perry C%sT 1964 Apr 26 2:00
- -5:00 - EST 1969
- -5:00 US E%sT 1971
- -5:00 - EST 2006 Apr 2 2:00
- -6:00 US C%sT
-#
-# Pike County, Indiana moved from central to eastern time in 1977,
-# then switched back in 2006, then switched back again in 2007.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Pike 1955 only - May 1 0:00 1:00 D
-Rule Pike 1955 1960 - Sep lastSun 2:00 0 S
-Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D
-Rule Pike 1961 1964 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53
- -6:00 US C%sT 1955
- -6:00 Pike C%sT 1965 Apr 25 2:00
- -5:00 - EST 1966 Oct 30 2:00
- -6:00 US C%sT 1977 Oct 30 2:00
- -5:00 - EST 2006 Apr 2 2:00
- -6:00 US C%sT 2007 Nov 4 2:00
- -5:00 US E%sT
-#
-# Starke County, Indiana moved from central to eastern time in 1991,
-# then switched back in 2006.
-# From Arthur David Olson (1991-10-28):
-# An article on page A3 of the Sunday, 1991-10-27 Washington Post
-# notes that Starke County switched from Central time to Eastern time as of
-# 1991-10-27.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Starke 1947 1961 - Apr lastSun 2:00 1:00 D
-Rule Starke 1947 1954 - Sep lastSun 2:00 0 S
-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 12:13:30
- -6:00 US C%sT 1947
- -6:00 Starke C%sT 1962 Apr 29 2:00
- -5:00 - EST 1963 Oct 27 2:00
- -6:00 US C%sT 1991 Oct 27 2:00
- -5:00 - EST 2006 Apr 2 2:00
- -6:00 US C%sT
-#
-# Pulaski County, Indiana, switched from eastern to central time in
-# April 2006 and then switched back in March 2007.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Pulaski 1946 1960 - Apr lastSun 2:00 1:00 D
-Rule Pulaski 1946 1954 - Sep lastSun 2:00 0 S
-Rule Pulaski 1955 1956 - Oct lastSun 2:00 0 S
-Rule Pulaski 1957 1960 - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Indiana/Winamac -5:46:25 - LMT 1883 Nov 18 12:13:35
- -6:00 US C%sT 1946
- -6:00 Pulaski C%sT 1961 Apr 30 2:00
- -5:00 - EST 1969
- -5:00 US E%sT 1971
- -5:00 - EST 2006 Apr 2 2:00
- -6:00 US C%sT 2007 Mar 11 2:00
- -5:00 US E%sT
-#
-# Switzerland County, Indiana, did not observe DST from 1973 through 2005.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-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
- -5:00 - EST 2006
- -5:00 US E%sT
-
-# Part of Kentucky left its clocks alone in 1974.
-# This also includes Clark, Floyd, and Harrison counties in Indiana.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Louisville 1921 only - May 1 2:00 1:00 D
-Rule Louisville 1921 only - Sep 1 2:00 0 S
-Rule Louisville 1941 1961 - Apr lastSun 2:00 1:00 D
-Rule Louisville 1941 only - Sep lastSun 2:00 0 S
-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/Kentucky/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
- -6:00 Louisville C%sT 1961 Jul 23 2:00
- -5:00 - EST 1968
- -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 County, Kentucky
-#
-# 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.
-#
-# From Rich Wales (2000-08-29):
-# After prolonged debate, and despite continuing deep differences of opinion,
-# Wayne County (central Kentucky) is switching from Central (-0600) to Eastern
-# (-0500) time. They won't "fall back" this year. See Sara Shipley,
-# The difference an hour makes, Nando Times (2000-08-29 15:33 -0400).
-#
-# From Paul Eggert (2001-07-16):
-# The final rule was published in the
-# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2000_register&docid=fr17au00-22">
-# Federal Register 65, 160 (2000-08-17), page 50154-50158.
-# </a>
-#
-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
- -5:00 US E%sT
-
-
-# From Rives McDow (2000-08-30):
-# Here ... are all the changes in the US since 1985.
-# Kearny County, KS (put all of county on central;
-# previously split between MST and CST) ... 1990-10
-# Starke County, IN (from CST to EST) ... 1991-10
-# Oliver County, ND (from MST to CST) ... 1992-10
-# West Wendover, NV (from PST TO MST) ... 1999-10
-# Wayne County, KY (from CST to EST) ... 2000-10
-#
-# From Paul Eggert (2001-07-17):
-# We don't know where the line used to be within Kearny County, KS,
-# so omit that change for now.
-# See America/Indiana/Knox for the Starke County, IN change.
-# See America/North_Dakota/Center for the Oliver County, ND change.
-# West Wendover, NV officially switched from Pacific to mountain time on
-# 1999-10-31. See the
-# <a href="http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=1999_register&docid=fr21oc99-15">
-# Federal Register 64, 203 (1999-10-21), page 56705-56707.
-# </a>
-# However, the Federal Register says that West Wendover already operated
-# on mountain time, and the rule merely made this official;
-# hence a separate tz entry is not needed.
-
-# Michigan
-#
-# From Bob Devine (1988-01-28):
-# Michigan didn't observe DST from 1968 to 1973.
-#
-# 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
-# city obeyed, half refused. After considerable debate, the decision
-# was rescinded and the city reverted to Sun time. A derisive offer to
-# erect a sundial in front of the city hall was referred to the
-# Committee on Sewers. Then, in 1905, Central time was adopted
-# by city vote.
-#
-# This story is too entertaining to be false, so go with Howse over Shanks.
-#
-# From Paul Eggert (2001-03-06):
-# Garland (1927) writes ``Cleveland and Detroit advanced their clocks
-# one hour in 1914.'' This change is not in Shanks. We have no more
-# info, so omit this for now.
-#
-# Most of Michigan observed DST from 1973 on, but was a bit late in 1975.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Detroit 1948 only - Apr lastSun 2:00 1:00 D
-Rule Detroit 1948 only - Sep lastSun 2:00 0 S
-Rule Detroit 1967 only - Jun 14 2:00 1:00 D
-Rule Detroit 1967 only - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Detroit -5:32:11 - LMT 1905
- -6:00 - CST 1915 May 15 2:00
- -5:00 - EST 1942
- -5:00 US E%sT 1946
- -5:00 Detroit E%sT 1973
- -5:00 US E%sT 1975
- -5:00 - EST 1975 Apr 27 2:00
- -5:00 US E%sT
-#
-# Dickinson, Gogebic, Iron, and Menominee Counties, Michigan,
-# switched from EST to CST/CDT in 1973.
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
-Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D
-Rule Menominee 1946 only - Sep lastSun 2:00 0 S
-Rule Menominee 1966 only - Apr lastSun 2:00 1:00 D
-Rule Menominee 1966 only - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00
- -6:00 US C%sT 1946
- -6:00 Menominee C%sT 1969 Apr 27 2:00
- -5:00 - EST 1973 Apr 29 2:00
- -6:00 US C%sT
-
-# Navassa
-# administered by the US Fish and Wildlife Service
-# claimed by US under the provisions of the 1856 Guano Islands Act
-# also claimed by Haiti
-# occupied 1857/1900 by the Navassa Phosphate Co
-# US lighthouse 1917/1996-09
-# currently uninhabited
-# see Mark Fineman, ``An Isle Rich in Guano and Discord'',
-# _Los Angeles Times_ (1998-11-10), A1, A10; it cites
-# Jimmy Skaggs, _The Great Guano Rush_ (1994).
-
-################################################################################
-
-
-# From Paul Eggert (2006-03-22):
-# A good source for time zone historical data outside the U.S. is
-# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
-# San Diego: ACS Publications, Inc. (2003).
-#
-# Gwillim Law 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
-# of the IATA's data after 1990.
-#
-# Except where otherwise noted, Shanks & Pottenger is the source for
-# entries through 1990, and IATA SSIM is the source for entries afterwards.
-#
-# Other sources occasionally used include:
-#
-# Edward W. Whitman, World Time Differences,
-# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
-# which I found in the UCLA library.
-#
-# <a href="http://www.pettswoodvillage.co.uk/Daylight_Savings_William_Willett.pdf">
-# William Willett, The Waste of Daylight, 19th edition
-# </a> (1914-03)
-#
-# See the `europe' file for Greenland.
-
-# Canada
-
-# From Alain LaBont<e'> (1994-11-14):
-# I post here the time zone abbreviations standardized in Canada
-# for both English and French in the CAN/CSA-Z234.4-89 standard....
-#
-# UTC Standard time Daylight savings time
-# offset French English French English
-# -2:30 - - HAT NDT
-# -3 - - HAA ADT
-# -3:30 HNT NST - -
-# -4 HNA AST HAE EDT
-# -5 HNE EST HAC CDT
-# -6 HNC CST HAR MDT
-# -7 HNR MST HAP PDT
-# -8 HNP PST HAY YDT
-# -9 HNY YST - -
-#
-# HN: Heure Normale ST: Standard Time
-# HA: Heure Avanc<e'>e DT: Daylight saving Time
-#
-# A: de l'Atlantique Atlantic
-# C: du Centre Central
-# E: de l'Est Eastern
-# M: Mountain
-# N: Newfoundland
-# P: du Pacifique Pacific
-# R: des Rocheuses
-# T: de Terre-Neuve
-# Y: du Yukon Yukon
-#
-# 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
-# & Pottenger.
-
-# From Chris Walton (2006-04-01, 2006-04-25, 2006-06-26, 2007-01-31,
-# 2007-03-01):
-# The British Columbia government announced yesterday that it will
-# adjust daylight savings next year to align with changes in the
-# U.S. and the rest of Canada....
-# http://www2.news.gov.bc.ca/news_releases_2005-2009/2006AG0014-000330.htm
-# ...
-# Nova Scotia
-# Daylight saving time will be extended by four weeks starting in 2007....
-# http://www.gov.ns.ca/just/regulations/rg2/2006/ma1206.pdf
-#
-# [For New Brunswick] the new legislation dictates that the time change is to
-# be done at 02:00 instead of 00:01.
-# http://www.gnb.ca/0062/acts/BBA-2006/Chap-19.pdf
-# ...
-# Manitoba has traditionally changed the clock every fall at 03:00.
-# As of 2006, the transition is to take place one hour earlier at 02:00.
-# http://web2.gov.mb.ca/laws/statutes/ccsm/o030e.php
-# ...
-# [Alberta, Ontario, Quebec] will follow US rules.
-# http://www.qp.gov.ab.ca/documents/spring/CH03_06.CFM
-# http://www.e-laws.gov.on.ca/DBLaws/Source/Regs/English/2006/R06111_e.htm
-# http://www2.publicationsduquebec.gouv.qc.ca/dynamicSearch/telecharge.php?type=5&file=2006C39A.PDF
-# ...
-# P.E.I. will follow US rules....
-# http://www.assembly.pe.ca/bills/pdf_chapter/62/3/chapter-41.pdf
-# ...
-# Province of Newfoundland and Labrador....
-# http://www.hoa.gov.nl.ca/hoa/bills/Bill0634.htm
-# ...
-# Yukon
-# http://www.gov.yk.ca/legislation/regs/oic2006_127.pdf
-# ...
-# N.W.T. will follow US rules. Whoever maintains the government web site
-# does not seem to believe in bookmarks. To see the news release, click the
-# following link and search for "Daylight Savings Time Change". Press the
-# "Daylight Savings Time Change" link; it will fire off a popup using
-# JavaScript.
-# http://www.exec.gov.nt.ca/currentnews/currentPR.asp?mode=archive
-# ...
-# Nunavut
-# An amendment to the Interpretation Act was registered on February 19/2007....
-# http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
-
-# From Paul Eggert (2006-04-25):
-# H. David Matthews and Mary Vincent's map
-# <a href="http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp">
-# "It's about TIME", _Canadian Geographic_ (September-October 1998)
-# </a> contains detailed boundaries for regions observing nonstandard
-# time and daylight saving time arrangements in Canada circa 1998.
-#
-# INMS, the Institute for National Measurement Standards in Ottawa, has <a
-# href="http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php">
-# information about standard and daylight saving time zones in Canada.
-# </a> (updated periodically).
-# Its unofficial information is often taken from Matthews and Vincent.
-
-# From Paul Eggert (2006-06-27):
-# For now, assume all of DST-observing Canada will fall into line with the
-# new US DST rules,
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Canada 1918 only - Apr 14 2:00 1:00 D
-Rule Canada 1918 only - Oct 31 2:00 0 S
-Rule Canada 1942 only - Feb 9 2:00 1:00 W # War
-Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule Canada 1945 only - Sep 30 2:00 0 S
-Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D
-Rule Canada 1974 2006 - Oct lastSun 2:00 0 S
-Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D
-Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D
-Rule Canada 2007 max - Nov Sun>=1 2:00 0 S
-
-
-# Newfoundland and Labrador
-
-# From Paul Eggert (2000-10-02):
-# Matthews and Vincent (1998) write that Labrador should use NST/NDT,
-# but the only part of Labrador that follows the rules is the
-# southeast corner, including Port Hope Simpson and Mary's Harbour,
-# but excluding, say, Black Tickle.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule StJohns 1917 only - Apr 8 2:00 1:00 D
-Rule StJohns 1917 only - Sep 17 2:00 0 S
-# Whitman gives 1919 Apr 5 and 1920 Apr 5; go with Shanks & Pottenger.
-Rule StJohns 1919 only - May 5 23:00 1:00 D
-Rule StJohns 1919 only - Aug 12 23:00 0 S
-# For 1931-1935 Whitman gives Apr same date; go with Shanks & Pottenger.
-Rule StJohns 1920 1935 - May Sun>=1 23:00 1:00 D
-Rule StJohns 1920 1935 - Oct lastSun 23:00 0 S
-# For 1936-1941 Whitman gives May Sun>=8 and Oct Sun>=1; go with Shanks &
-# Pottenger.
-Rule StJohns 1936 1941 - May Mon>=9 0:00 1:00 D
-Rule StJohns 1936 1941 - Oct Mon>=2 0:00 0 S
-# Whitman gives the following transitions:
-# 1942 03-01/12-31, 1943 05-30/09-05, 1944 07-10/09-02, 1945 01-01/10-07
-# but go with Shanks & Pottenger and assume they used Canadian rules.
-# For 1946-9 Whitman gives May 5,4,9,1 - Oct 1,5,3,2, and for 1950 he gives
-# Apr 30 - Sep 24; go with Shanks & Pottenger.
-Rule StJohns 1946 1950 - May Sun>=8 2:00 1:00 D
-Rule StJohns 1946 1950 - Oct Sun>=2 2:00 0 S
-Rule StJohns 1951 1986 - Apr lastSun 2:00 1:00 D
-Rule StJohns 1951 1959 - Sep lastSun 2:00 0 S
-Rule StJohns 1960 1986 - Oct lastSun 2:00 0 S
-# From Paul Eggert (2000-10-02):
-# INMS (2000-09-12) says that, since 1988 at least, Newfoundland switches
-# at 00:01 local time. For now, assume it started in 1987.
-Rule StJohns 1987 only - Apr Sun>=1 0:01 1:00 D
-Rule StJohns 1987 2006 - Oct lastSun 0:01 0 S
-Rule StJohns 1988 only - Apr Sun>=1 0:01 2:00 DD
-Rule StJohns 1989 2006 - Apr Sun>=1 0:01 1:00 D
-Rule StJohns 2007 max - Mar Sun>=8 0:01 1:00 D
-Rule StJohns 2007 max - Nov Sun>=1 0:01 0 S
-#
-# St John's has an apostrophe, but Posix file names can't have apostrophes.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/St_Johns -3:30:52 - LMT 1884
- -3:30:52 StJohns N%sT 1918
- -3:30:52 Canada N%sT 1919
- -3:30:52 StJohns N%sT 1935 Mar 30
- -3:30 StJohns N%sT 1942 May 11
- -3:30 Canada N%sT 1946
- -3:30 StJohns N%sT
-
-# most of east Labrador
-
-# The name `Happy Valley-Goose Bay' is too long; use `Goose Bay'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay
- -3:30:52 - NST 1918
- -3:30:52 Canada N%sT 1919
- -3:30:52 - NST 1935 Mar 30
- -3:30 - NST 1936
- -3:30 StJohns N%sT 1942 May 11
- -3:30 Canada N%sT 1946
- -3:30 StJohns N%sT 1966 Mar 15 2:00
- -4:00 StJohns A%sT
-
-
-# west Labrador, Nova Scotia, Prince Edward I
-
-# From Paul Eggert (2006-03-22):
-# Shanks & Pottenger write that since 1970 most of this region has been like
-# Halifax. Many locales did not observe peacetime DST until 1972;
-# Glace Bay, NS is the largest that we know of.
-# Shanks & Pottenger also write that Liverpool, NS was the only town
-# in Canada to observe DST in 1971 but not 1970; for now we'll assume
-# this is a typo.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Halifax 1916 only - Apr 1 0:00 1:00 D
-Rule Halifax 1916 only - Oct 1 0:00 0 S
-Rule Halifax 1920 only - May 9 0:00 1:00 D
-Rule Halifax 1920 only - Aug 29 0:00 0 S
-Rule Halifax 1921 only - May 6 0:00 1:00 D
-Rule Halifax 1921 1922 - Sep 5 0:00 0 S
-Rule Halifax 1922 only - Apr 30 0:00 1:00 D
-Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D
-Rule Halifax 1923 only - Sep 4 0:00 0 S
-Rule Halifax 1924 only - Sep 15 0:00 0 S
-Rule Halifax 1925 only - Sep 28 0:00 0 S
-Rule Halifax 1926 only - May 16 0:00 1:00 D
-Rule Halifax 1926 only - Sep 13 0:00 0 S
-Rule Halifax 1927 only - May 1 0:00 1:00 D
-Rule Halifax 1927 only - Sep 26 0:00 0 S
-Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D
-Rule Halifax 1928 only - Sep 9 0:00 0 S
-Rule Halifax 1929 only - Sep 3 0:00 0 S
-Rule Halifax 1930 only - Sep 15 0:00 0 S
-Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S
-Rule Halifax 1932 only - May 1 0:00 1:00 D
-Rule Halifax 1933 only - Apr 30 0:00 1:00 D
-Rule Halifax 1933 only - Oct 2 0:00 0 S
-Rule Halifax 1934 only - May 20 0:00 1:00 D
-Rule Halifax 1934 only - Sep 16 0:00 0 S
-Rule Halifax 1935 only - Jun 2 0:00 1:00 D
-Rule Halifax 1935 only - Sep 30 0:00 0 S
-Rule Halifax 1936 only - Jun 1 0:00 1:00 D
-Rule Halifax 1936 only - Sep 14 0:00 0 S
-Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D
-Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S
-Rule Halifax 1939 only - May 28 0:00 1:00 D
-Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D
-Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D
-Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S
-Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D
-Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S
-Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D
-Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S
-Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D
-Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Halifax -4:14:24 - LMT 1902 Jun 15
- -4:00 Halifax A%sT 1918
- -4:00 Canada A%sT 1919
- -4:00 Halifax A%sT 1942 Feb 9 2:00s
- -4:00 Canada A%sT 1946
- -4:00 Halifax A%sT 1974
- -4:00 Canada A%sT
-Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15
- -4:00 Canada A%sT 1953
- -4:00 Halifax A%sT 1954
- -4:00 - AST 1972
- -4:00 Halifax A%sT 1974
- -4:00 Canada A%sT
-
-# New Brunswick
-
-# From Paul Eggert (2007-01-31):
-# The Time Definition Act <http://www.gnb.ca/0062/PDF-acts/t-06.pdf>
-# says they changed at 00:01 through 2006, and
-# <http://www.canlii.org/nb/laws/sta/t-6/20030127/whole.html> makes it
-# clear that this was the case since at least 1993.
-# For now, assume it started in 1993.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D
-Rule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S
-Rule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D
-Rule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S
-Rule Moncton 1939 only - May 27 1:00 1:00 D
-Rule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S
-Rule Moncton 1940 only - May 19 1:00 1:00 D
-Rule Moncton 1941 only - May 4 1:00 1:00 D
-Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D
-Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S
-Rule Moncton 1957 1972 - Oct lastSun 2:00 0 S
-Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D
-Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Moncton -4:19:08 - LMT 1883 Dec 9
- -5:00 - EST 1902 Jun 15
- -4:00 Canada A%sT 1933
- -4:00 Moncton A%sT 1942
- -4:00 Canada A%sT 1946
- -4:00 Moncton A%sT 1973
- -4:00 Canada A%sT 1993
- -4:00 Moncton A%sT 2007
- -4:00 Canada A%sT
-
-# Quebec
-
-# From Paul Eggert (2006-07-09):
-# Shanks & Pottenger write that since 1970 most of Quebec has been
-# like Montreal.
-
-# From Paul Eggert (2006-06-27):
-# Matthews and Vincent (1998) also write that Quebec east of the -63
-# meridian is supposed to observe AST, but residents as far east as
-# Natashquan use EST/EDT, and residents east of Natashquan use AST.
-# In "Official time in Quebec" the Quebec department of justice writes in
-# http://www.justice.gouv.qc.ca/english/publications/generale/temps-regl-1-a.htm
-# that "The residents of the Municipality of the
-# Cote-Nord-du-Golfe-Saint-Laurent and the municipalities of Saint-Augustin,
-# Bonne-Esperance and Blanc-Sablon apply the Official Time Act as it is
-# written and use Atlantic standard time all year round. The same applies to
-# the residents of the Native facilities along the lower North Shore."
-# <http://www.assnat.qc.ca/eng/37legislature2/Projets-loi/Publics/06-a002.htm>
-# says this common practice was codified into law as of 2007.
-# For lack of better info, guess this practice began around 1970, contra to
-# Shanks & Pottenger who have this region observing AST/ADT.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Mont 1917 only - Mar 25 2:00 1:00 D
-Rule Mont 1917 only - Apr 24 0:00 0 S
-Rule Mont 1919 only - Mar 31 2:30 1:00 D
-Rule Mont 1919 only - Oct 25 2:30 0 S
-Rule Mont 1920 only - May 2 2:30 1:00 D
-Rule Mont 1920 1922 - Oct Sun>=1 2:30 0 S
-Rule Mont 1921 only - May 1 2:00 1:00 D
-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
-# 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
-Rule Mont 1951 1956 - Sep lastSun 2:00 0 S
-Rule Mont 1957 1973 - Oct lastSun 2:00 0 S
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Blanc-Sablon -3:48:28 - LMT 1884
- -4:00 Canada A%sT 1970
- -4:00 - AST
-Zone America/Montreal -4:54:16 - LMT 1884
- -5:00 Mont E%sT 1918
- -5:00 Canada E%sT 1919
- -5:00 Mont E%sT 1942 Feb 9 2:00s
- -5:00 Canada E%sT 1946
- -5:00 Mont E%sT 1974
- -5:00 Canada E%sT
-
-
-# Ontario
-
-# From Paul Eggert (2006-07-09):
-# Shanks & Pottenger write that since 1970 most of Ontario has been like
-# Toronto.
-# Thunder Bay skipped DST in 1973.
-# Many smaller locales did not observe peacetime DST until 1974;
-# Nipigon (EST) and Rainy River (CST) are the largest that we know of.
-# Far west Ontario is like Winnipeg; far east Quebec is like Halifax.
-
-# From Mark Brader (2003-07-26):
-# [According to the Toronto Star] Orillia, Ontario, adopted DST
-# effective Saturday, 1912-06-22, 22:00; the article mentions that
-# Port Arthur (now part of Thunder Bay, Ontario) as well as Moose Jaw
-# have already done so. In Orillia DST was to run until Saturday,
-# 1912-08-31 (no time mentioned), but it was met with considerable
-# hostility from certain segments of the public, and was revoked after
-# only two weeks -- I copied it as Saturday, 1912-07-07, 22:00, but
-# presumably that should be -07-06. (1912-06-19, -07-12; also letters
-# earlier in June).
-#
-# Kenora, Ontario, was to abandon DST on 1914-06-01 (-05-21).
-
-# From Paul Eggert (1997-10-17):
-# Mark Brader writes that an article in the 1997-10-14 Toronto Star
-# says that Atikokan, Ontario currently does not observe DST,
-# but will vote on 11-10 whether to use EST/EDT.
-# He also writes that the
-# <a href="http://www.gov.on.ca/MBS/english/publications/statregs/conttext.html">
-# Ontario Time Act (1990, Chapter T.9)
-# </a>
-# 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.
-#
-# From Paul Eggert (2000-10-02):
-# Matthews and Vincent (1998) write that Atikokan, Pickle Lake, and
-# New Osnaburgh observe CST all year, that Big Trout Lake observes
-# CST/CDT, and that Upsala and Shebandowan observe EST/EDT, all in
-# violation of the official Ontario rules.
-#
-# From Paul Eggert (2006-07-09):
-# Chris Walton (2006-07-06) mentioned an article by Stephanie MacLellan in the
-# 2005-07-21 Chronicle-Journal, which said:
-#
-# The clocks in Atikokan stay set on standard time year-round.
-# This means they spend about half the time on central time and
-# the other half on eastern time.
-#
-# For the most part, the system works, Mayor Dennis Brown said.
-#
-# "The majority of businesses in Atikokan deal more with Eastern
-# Canada, but there are some that deal with Western Canada," he
-# said. "I don't see any changes happening here."
-#
-# Walton also writes "Supposedly Pickle Lake and Mishkeegogamang
-# [New Osnaburgh] follow the same practice."
-
-# From Garry McKinnon (2006-07-14) via Chris Walton:
-# I chatted with a member of my board who has an outstanding memory
-# and a long history in Atikokan (and in the telecom industry) and he
-# can say for certain that Atikokan has been practicing the current
-# time keeping since 1952, at least.
-
-# From Paul Eggert (2006-07-17):
-# Shanks & Pottenger say that Atikokan has agreed with Rainy River
-# ever since standard time was introduced, but the information from
-# McKinnon sounds more authoritative. For now, assume that Atikokan
-# switched to EST immediately after WWII era daylight saving time
-# ended. This matches the old (less-populous) America/Coral_Harbour
-# entry since our cutoff date of 1970, so we can move
-# America/Coral_Harbour to the 'backward' file.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Toronto 1919 only - Mar 30 23:30 1:00 D
-Rule Toronto 1919 only - Oct 26 0:00 0 S
-Rule Toronto 1920 only - May 2 2:00 1:00 D
-Rule Toronto 1920 only - Sep 26 0:00 0 S
-Rule Toronto 1921 only - May 15 2:00 1:00 D
-Rule Toronto 1921 only - Sep 15 2:00 0 S
-Rule Toronto 1922 1923 - May Sun>=8 2:00 1:00 D
-# Shanks & Pottenger say 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
-# 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
-Rule Toronto 1947 1948 - Sep lastSun 0:00 0 S
-Rule Toronto 1949 only - Nov lastSun 0:00 0 S
-Rule Toronto 1950 1973 - Apr lastSun 2:00 1:00 D
-Rule Toronto 1950 only - Nov lastSun 2:00 0 S
-Rule Toronto 1951 1956 - Sep lastSun 2:00 0 S
-# Shanks & Pottenger say Toronto ended DST a week early in 1971,
-# namely on 1971-10-24, but Mark Brader wrote (2003-05-31) that this
-# is wrong, and that he had confirmed it by checking the 1971-10-30
-# Toronto Star, which said that DST was ending 1971-10-31 as usual.
-Rule Toronto 1957 1973 - Oct lastSun 2:00 0 S
-
-# From Paul Eggert (2003-07-27):
-# 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."
-
-# 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/Toronto -5:17:32 - LMT 1895
- -5:00 Canada E%sT 1919
- -5:00 Toronto E%sT 1942 Feb 9 2:00s
- -5:00 Canada E%sT 1946
- -5:00 Toronto E%sT 1974
- -5:00 Canada E%sT
-Zone America/Thunder_Bay -5:57:00 - LMT 1895
- -6:00 - CST 1910
- -5:00 - EST 1942
- -5:00 Canada E%sT 1970
- -5:00 Mont E%sT 1973
- -5:00 - EST 1974
- -5:00 Canada E%sT
-Zone America/Nipigon -5:53:04 - LMT 1895
- -5:00 Canada E%sT 1940 Sep 29
- -5:00 1:00 EDT 1942 Feb 9 2:00s
- -5:00 Canada E%sT
-Zone America/Rainy_River -6:18:16 - LMT 1895
- -6:00 Canada C%sT 1940 Sep 29
- -6:00 1:00 CDT 1942 Feb 9 2:00s
- -6:00 Canada C%sT
-Zone America/Atikokan -6:06:28 - LMT 1895
- -6:00 Canada C%sT 1940 Sep 29
- -6:00 1:00 CDT 1942 Feb 9 2:00s
- -6:00 Canada C%sT 1945 Sep 30 2:00
- -5:00 - EST
-
-
-# Manitoba
-
-# From Rob Douglas (2006-04-06):
-# the old Manitoba Time Act - as amended by Bill 2, assented to
-# March 27, 1987 ... said ...
-# "between two o'clock Central Standard Time in the morning of
-# the first Sunday of April of each year and two o'clock Central
-# Standard Time in the morning of the last Sunday of October next
-# following, one hour in advance of Central Standard Time."...
-# I believe that the English legislation [of the old time act] had =
-# been assented to (March 22, 1967)....
-# Also, as far as I can tell, there was no order-in-council varying
-# the time of Daylight Saving Time for 2005 and so the provisions of
-# the 1987 version would apply - the changeover was at 2:00 Central
-# Standard Time (i.e. not until 3:00 Central Daylight Time).
-
-# From Paul Eggert (2006-04-10):
-# Shanks & Pottenger say Manitoba switched at 02:00 (not 02:00s)
-# starting 1966. Since 02:00s is clearly correct for 1967 on, assume
-# it was also 02:00s in 1966.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Winn 1916 only - Apr 23 0:00 1:00 D
-Rule Winn 1916 only - Sep 17 0:00 0 S
-Rule Winn 1918 only - Apr 14 2:00 1:00 D
-Rule Winn 1918 only - Oct 31 2:00 0 S
-Rule Winn 1937 only - May 16 2:00 1:00 D
-Rule Winn 1937 only - Sep 26 2:00 0 S
-Rule Winn 1942 only - Feb 9 2:00 1:00 W # War
-Rule Winn 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule Winn 1945 only - Sep lastSun 2:00 0 S
-Rule Winn 1946 only - May 12 2:00 1:00 D
-Rule Winn 1946 only - Oct 13 2:00 0 S
-Rule Winn 1947 1949 - Apr lastSun 2:00 1:00 D
-Rule Winn 1947 1949 - Sep lastSun 2:00 0 S
-Rule Winn 1950 only - May 1 2:00 1:00 D
-Rule Winn 1950 only - Sep 30 2:00 0 S
-Rule Winn 1951 1960 - Apr lastSun 2:00 1:00 D
-Rule Winn 1951 1958 - Sep lastSun 2:00 0 S
-Rule Winn 1959 only - Oct lastSun 2:00 0 S
-Rule Winn 1960 only - Sep lastSun 2:00 0 S
-Rule Winn 1963 only - Apr lastSun 2:00 1:00 D
-Rule Winn 1963 only - Sep 22 2:00 0 S
-Rule Winn 1966 1986 - Apr lastSun 2:00s 1:00 D
-Rule Winn 1966 2005 - Oct lastSun 2:00s 0 S
-Rule Winn 1987 2005 - Apr Sun>=1 2:00s 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16
- -6:00 Winn C%sT 2006
- -6:00 Canada C%sT
-
-
-# Saskatchewan
-
-# From Mark Brader (2003-07-26):
-# The first actual adoption of DST in Canada was at the municipal
-# level. As the [Toronto] Star put it (1912-06-07), "While people
-# elsewhere have long been talking of legislation to save daylight,
-# the city of Moose Jaw [Saskatchewan] has acted on its own hook."
-# DST in Moose Jaw began on Saturday, 1912-06-01 (no time mentioned:
-# presumably late evening, as below), and would run until "the end of
-# the summer". The discrepancy between municipal time and railroad
-# time was noted.
-
-# From Paul Eggert (2003-07-27):
-# Willett (1914-03) notes that DST "has been in operation ... in the
-# City of Moose Jaw, Saskatchewan, for one year."
-
-# From Paul Eggert (2006-03-22):
-# Shanks & Pottenger say that since 1970 this region has mostly been as Regina.
-# Some western towns (e.g. Swift Current) switched from MST/MDT to CST in 1972.
-# Other western towns (e.g. Lloydminster) are like Edmonton.
-# Matthews and Vincent (1998) write that Denare Beach and Creighton
-# are like Winnipeg, in violation of Saskatchewan law.
-
-# From W. Jones (1992-11-06):
-# The. . .below is based on information I got from our law library, the
-# provincial archives, and the provincial Community Services department.
-# A precise history would require digging through newspaper archives, and
-# since you didn't say what you wanted, I didn't bother.
-#
-# Saskatchewan is split by a time zone meridian (105W) and over the years
-# the boundary became pretty ragged as communities near it reevaluated
-# their affiliations in one direction or the other. In 1965 a provincial
-# referendum favoured legislating common time practices.
-#
-# On 15 April 1966 the Time Act (c. T-14, Revised Statutes of
-# Saskatchewan 1978) was proclaimed, and established that the eastern
-# part of Saskatchewan would use CST year round, that districts in
-# northwest Saskatchewan would by default follow CST but could opt to
-# follow Mountain Time rules (thus 1 hour difference in the winter and
-# zero in the summer), and that districts in southwest Saskatchewan would
-# by default follow MT but could opt to follow CST.
-#
-# It took a few years for the dust to settle (I know one story of a town
-# on one time zone having its school in another, such that a mom had to
-# serve her family lunch in two shifts), but presently it seems that only
-# a few towns on the border with Alberta (e.g. Lloydminster) follow MT
-# rules any more; all other districts appear to have used CST year round
-# since sometime in the 1960s.
-
-# From Chris Walton (2006-06-26):
-# The Saskatchewan time act which was last updated in 1996 is about 30 pages
-# long and rather painful to read.
-# http://www.qp.gov.sk.ca/documents/English/Statutes/Statutes/T14.pdf
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Regina 1918 only - Apr 14 2:00 1:00 D
-Rule Regina 1918 only - Oct 31 2:00 0 S
-Rule Regina 1930 1934 - May Sun>=1 0:00 1:00 D
-Rule Regina 1930 1934 - Oct Sun>=1 0:00 0 S
-Rule Regina 1937 1941 - Apr Sun>=8 0:00 1:00 D
-Rule Regina 1937 only - Oct Sun>=8 0:00 0 S
-Rule Regina 1938 only - Oct Sun>=1 0:00 0 S
-Rule Regina 1939 1941 - Oct Sun>=8 0:00 0 S
-Rule Regina 1942 only - Feb 9 2:00 1:00 W # War
-Rule Regina 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule Regina 1945 only - Sep lastSun 2:00 0 S
-Rule Regina 1946 only - Apr Sun>=8 2:00 1:00 D
-Rule Regina 1946 only - Oct Sun>=8 2:00 0 S
-Rule Regina 1947 1957 - Apr lastSun 2:00 1:00 D
-Rule Regina 1947 1957 - Sep lastSun 2:00 0 S
-Rule Regina 1959 only - Apr lastSun 2:00 1:00 D
-Rule Regina 1959 only - Oct lastSun 2:00 0 S
-#
-Rule Swift 1957 only - Apr lastSun 2:00 1:00 D
-Rule Swift 1957 only - Oct lastSun 2:00 0 S
-Rule Swift 1959 1961 - Apr lastSun 2:00 1:00 D
-Rule Swift 1959 only - Oct lastSun 2:00 0 S
-Rule Swift 1960 1961 - Sep lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Regina -6:58:36 - LMT 1905 Sep
- -7:00 Regina M%sT 1960 Apr lastSun 2:00
- -6:00 - CST
-Zone America/Swift_Current -7:11:20 - LMT 1905 Sep
- -7:00 Canada M%sT 1946 Apr lastSun 2:00
- -7:00 Regina M%sT 1950
- -7:00 Swift M%sT 1972 Apr lastSun 2:00
- -6:00 - CST
-
-
-# Alberta
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Edm 1918 1919 - Apr Sun>=8 2:00 1:00 D
-Rule Edm 1918 only - Oct 31 2:00 0 S
-Rule Edm 1919 only - May 27 2:00 0 S
-Rule Edm 1920 1923 - Apr lastSun 2:00 1:00 D
-Rule Edm 1920 only - Oct lastSun 2:00 0 S
-Rule Edm 1921 1923 - Sep lastSun 2:00 0 S
-Rule Edm 1942 only - Feb 9 2:00 1:00 W # War
-Rule Edm 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule Edm 1945 only - Sep lastSun 2:00 0 S
-Rule Edm 1947 only - Apr lastSun 2:00 1:00 D
-Rule Edm 1947 only - Sep lastSun 2:00 0 S
-Rule Edm 1967 only - Apr lastSun 2:00 1:00 D
-Rule Edm 1967 only - Oct lastSun 2:00 0 S
-Rule Edm 1969 only - Apr lastSun 2:00 1:00 D
-Rule Edm 1969 only - Oct lastSun 2:00 0 S
-Rule Edm 1972 1986 - Apr lastSun 2:00 1:00 D
-Rule Edm 1972 2006 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Edmonton -7:33:52 - LMT 1906 Sep
- -7:00 Edm M%sT 1987
- -7:00 Canada M%sT
-
-
-# British Columbia
-
-# From Paul Eggert (2006-03-22):
-# Shanks & Pottenger write that since 1970 most of this region has
-# been like Vancouver.
-# Dawson Creek uses MST. Much of east BC is like Edmonton.
-# Matthews and Vincent (1998) write that Creston is like Dawson Creek.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Vanc 1918 only - Apr 14 2:00 1:00 D
-Rule Vanc 1918 only - Oct 31 2:00 0 S
-Rule Vanc 1942 only - Feb 9 2:00 1:00 W # War
-Rule Vanc 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule Vanc 1945 only - Sep 30 2:00 0 S
-Rule Vanc 1946 1986 - Apr lastSun 2:00 1:00 D
-Rule Vanc 1946 only - Oct 13 2:00 0 S
-Rule Vanc 1947 1961 - Sep lastSun 2:00 0 S
-Rule Vanc 1962 2006 - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Vancouver -8:12:28 - LMT 1884
- -8:00 Vanc P%sT 1987
- -8:00 Canada P%sT
-Zone America/Dawson_Creek -8:00:56 - LMT 1884
- -8:00 Canada P%sT 1947
- -8:00 Vanc P%sT 1972 Aug 30 2:00
- -7:00 - MST
-
-
-# Northwest Territories, Nunavut, Yukon
-
-# From Paul Eggert (2006-03-22):
-# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
-# Mathew Englander (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;
-# see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1).
-# * C.O. 1973/214 switched Yukon to PST on 1973-10-28 00:00.
-# * O.I.C. 1980/02 established DST.
-# * O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
-# Shanks & Pottenger say Yukon's 1973-10-28 switch was at 2:00; go
-# with Englander.
-# From Chris Walton (2006-06-26):
-# Here is a link to the old daylight saving portion of the interpretation
-# act which was last updated in 1987:
-# http://www.gov.yk.ca/legislation/regs/oic1987_056.pdf
-
-# 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.
-
-# 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.
-
-# From Paul Eggert (2000-10-02):
-# Matthews and Vincent (1998) say the following, but we lack histories
-# for these potential new Zones.
-#
-# The Canadian Forces station at Alert uses Eastern Time while the
-# handful of residents at the Eureka weather station [in the Central
-# zone] skip daylight savings. Baffin Island, which is crossed by the
-# Central, Eastern and Atlantic Time zones only uses Eastern Time.
-# Gjoa Haven, Taloyoak and Pelly Bay all use Mountain instead of
-# Central Time and Southampton Island [in the Central zone] is not
-# required to use daylight savings.
-
-# From
-# <a href="http://www.nunatsiaq.com/archives/nunavut001130/nvt21110_02.html">
-# Nunavut now has two time zones
-# </a> (2000-11-10):
-# The Nunavut government would allow its employees in Kugluktuk and
-# Cambridge Bay to operate on central time year-round, putting them
-# one hour behind the rest of Nunavut for six months during the winter.
-# At the end of October the two communities had rebelled against
-# Nunavut's unified time zone, refusing to shift to eastern time with
-# the rest of the territory for the winter. Cambridge Bay remained on
-# central time, while Kugluktuk, even farther west, reverted to
-# mountain time, which they had used before the advent of Nunavut's
-# unified time zone in 1999.
-#
-# From Rives McDow (2001-01-20), quoting the Nunavut government:
-# The preceding decision came into effect at midnight, Saturday Nov 4, 2000.
-
-# From Paul Eggert (2000-12-04):
-# Let's just keep track of the official times for now.
-
-# From Rives McDow (2001-03-07):
-# The premier of Nunavut has issued a ministerial statement advising
-# that effective 2001-04-01, the territory of Nunavut will revert
-# back to three time zones (mountain, central, and eastern). Of the
-# cities in Nunavut, Coral Harbor is the only one that I know of that
-# has said it will not observe dst, staying on EST year round. I'm
-# checking for more info, and will get back to you if I come up with
-# more.
-# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
-
-# From Gwillim Law (2005-05-21):
-# According to maps at
-# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg
-# http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg
-# (both dated 2003), and
-# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
-# (from a 1998 Canadian Geographic article), the de facto and de jure time
-# for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
-# round. Using Google, it's easy to find other websites that confirm this.
-# I wasn't able to find how far back this time regimen goes, but since it
-# predates the creation of Nunavut, it probably goes back many years....
-# The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
-#
-# From Paul Eggert (2005-07-26):
-# For lack of better information, assume that Southampton Island observed
-# daylight saving only during wartime.
-
-# From Chris Walton (2007-03-01):
-# ... the community of Resolute (located on Cornwallis Island in
-# Nunavut) moved from Central Time to Eastern Time last November.
-# Basically the community did not change its clocks at the end of
-# daylight saving....
-# http://www.nnsl.com/frames/newspapers/2006-11/nov13_06none.html
-
-# From Chris Walton (2007-03-14):
-# Today I phoned the "hamlet office" to find out what Resolute was doing with
-# its clocks.
-#
-# The individual that answered the phone confirmed that the clocks did not
-# move at the end of daylight saving on October 29/2006. He also told me that
-# the clocks did not move this past weekend (March 11/2007)....
-#
-# America/Resolute should use the "Canada" Rule up to October 29/2006.
-# After that it should be fixed on Eastern Standard Time until further notice.
-
-# 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
-Rule NT_YK 1919 only - May 25 2:00 1:00 D
-Rule NT_YK 1919 only - Nov 1 0:00 0 S
-Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
-Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
-Rule NT_YK 1945 only - Sep 30 2:00 0 S
-Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
-Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
-Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
-Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
-Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-# aka Panniqtuuq
-Zone America/Pangnirtung 0 - zzz 1921 # trading post est.
- -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 2000 Oct 29 2:00
- -5:00 Canada E%sT
-# formerly Frobisher Bay
-Zone America/Iqaluit 0 - zzz 1942 Aug # Frobisher Bay est.
- -5:00 NT_YK E%sT 1999 Oct 31 2:00
- -6:00 Canada C%sT 2000 Oct 29 2:00
- -5:00 Canada E%sT
-# aka Qausuittuq
-Zone America/Resolute 0 - zzz 1947 Aug 31 # Resolute founded
- -6:00 NT_YK C%sT 2000 Oct 29 2:00
- -5:00 - EST 2001 Apr 1 3:00
- -6:00 Canada C%sT 2006 Oct 29 2:00
- -5:00 - EST
-# aka Kangiqiniq
-Zone America/Rankin_Inlet 0 - zzz 1957 # Rankin Inlet founded
- -6:00 NT_YK C%sT 2000 Oct 29 2:00
- -5:00 - EST 2001 Apr 1 3:00
- -6:00 Canada C%sT
-# aka Iqaluktuuttiaq
-Zone America/Cambridge_Bay 0 - zzz 1920 # trading post est.?
- -7:00 NT_YK M%sT 1999 Oct 31 2:00
- -6:00 Canada C%sT 2000 Oct 29 2:00
- -5:00 - EST 2000 Nov 5 0:00
- -6:00 - CST 2001 Apr 1 3:00
- -7:00 Canada M%sT
-Zone America/Yellowknife 0 - zzz 1935 # Yellowknife founded?
- -7:00 NT_YK M%sT 1980
- -7:00 Canada M%sT
-Zone America/Inuvik 0 - zzz 1953 # Inuvik founded
- -8:00 NT_YK P%sT 1979 Apr lastSun 2:00
- -7:00 NT_YK M%sT 1980
- -7:00 Canada M%sT
-Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
- -9:00 NT_YK Y%sT 1966 Jul 1 2:00
- -8:00 NT_YK P%sT 1980
- -8:00 Canada P%sT
-Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
- -9:00 NT_YK Y%sT 1973 Oct 28 0:00
- -8:00 NT_YK P%sT 1980
- -8:00 Canada P%sT
-
-
-###############################################################################
-
-# Mexico
-
-# From Paul Eggert (2001-03-05):
-# The Investigation and Analysis Service of the
-# Mexican Library of Congress (MLoC) has published a
-# <a href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/">
-# history of Mexican local time (in Spanish)
-# </a>.
-#
-# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
-# (In all cases we go with the MLoC.)
-# S&P report that Baja was at -8:00 in 1922/1923.
-# S&P say the 1930 transition in Baja was 1930-11-16.
-# S&P report no DST during summer 1931.
-# S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
-
-# From Gwillim Law (2001-02-20):
-# There are some other discrepancies between the Decrees page and the
-# tz database. I think they can best be explained by supposing that
-# the researchers who prepared the Decrees page failed to find some of
-# the relevant documents.
-
-# From Alan Perry (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
-# <a href="http://mexico-travel.com/extra/timezone_eng.html">
-# ``Diario Oficial: Time Zone Changeover'' (1996-01-04).
-# </a>
-
-# From Rives McDow (1998-10-08):
-# 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 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 Jesper Norgaard, translating
-# <http://www.reforma.com/nacional/articulo/064327/> (2001-01-17):
-# In Oaxaca, the 55.000 teachers from the Section 22 of the National
-# Syndicate of Education Workers, refuse to apply daylight saving each
-# year, so that the more than 10,000 schools work at normal hour the
-# whole year.
-
-# From Gwillim Law (2001-01-19):
-# <http://www.reforma.com/negocios_y_dinero/articulo/064481/> ... says
-# (translated):...
-# January 17, 2000 - The Energy Secretary, Ernesto Martens, announced
-# that Summer Time will be reduced from seven to five months, starting
-# this year....
-# <http://www.publico.com.mx/scripts/texto3.asp?action=pagina&pag=21&pos=p&secc=naci&date=01/17/2001>
-# [translated], says "summer time will ... take effect on the first Sunday
-# in May, and end on the last Sunday of September.
-
-# From Arthur David Olson (2001-01-25):
-# The 2001-01-24 traditional Washington Post contained the page one
-# story "Timely Issue Divides Mexicans."...
-# http://www.washingtonpost.com/wp-dyn/articles/A37383-2001Jan23.html
-# ... Mexico City Mayor Lopez Obrador "...is threatening to keep
-# Mexico City and its 20 million residents on a different time than
-# the rest of the country..." In particular, Lopez Obrador would abolish
-# observation of Daylight Saving Time.
-
-# <a href="http://www.conae.gob.mx/ahorro/decretohorver2001.html#decre">
-# Official statute published by the Energy Department
-# </a> (2001-02-01) shows Baja and Chihauhua as still using US DST rules,
-# and Sonora with no DST. This was reported by Jesper Norgaard (2001-02-03).
-
-# From Paul Eggert (2001-03-03):
-#
-# <a href="http://www.latimes.com/news/nation/20010303/t000018766.html">
-# James F. Smith writes in today's LA Times
-# </a>
-# * Sonora will continue to observe standard time.
-# * Last week Mexico City's mayor Andres Manuel Lopez Obrador decreed that
-# the Federal District will not adopt DST.
-# * 4 of 16 district leaders announced they'll ignore the decree.
-# * The decree does not affect federal-controlled facilities including
-# the airport, banks, hospitals, and schools.
-#
-# For now we'll assume that the Federal District will bow to federal rules.
-
-# From Jesper Norgaard (2001-04-01):
-# I found some references to the Mexican application of daylight
-# saving, which modifies what I had already sent you, stating earlier
-# that a number of northern Mexican states would go on daylight
-# saving. The modification reverts this to only cover Baja California
-# (Norte), while all other states (except Sonora, who has no daylight
-# saving all year) will follow the original decree of president
-# Vicente Fox, starting daylight saving May 6, 2001 and ending
-# September 30, 2001.
-# References: "Diario de Monterrey" <www.diariodemonterrey.com/index.asp>
-# Palabra <http://palabra.infosel.com/010331/primera/ppri3101.pdf> (2001-03-31)
-
-# From Reuters (2001-09-04):
-# Mexico's Supreme Court on Tuesday declared that daylight savings was
-# unconstitutional in Mexico City, creating the possibility the
-# capital will be in a different time zone from the rest of the nation
-# next year.... The Supreme Court's ruling takes effect at 2:00
-# a.m. (0800 GMT) on Sept. 30, when Mexico is scheduled to revert to
-# standard time. "This is so residents of the Federal District are not
-# subject to unexpected time changes," a statement from the court said.
-
-# From Jesper Norgaard Welen (2002-03-12):
-# ... consulting my local grocery store(!) and my coworkers, they all insisted
-# that a new decision had been made to reinstate US style DST in Mexico....
-# http://www.conae.gob.mx/ahorro/horaver2001_m1_2002.html (2002-02-20)
-# confirms this. Sonora as usual is the only state where DST is not applied.
-
-# 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
-Rule Mexico 1940 only - Dec 9 0:00 1:00 D
-Rule Mexico 1941 only - Apr 1 0:00 0 S
-Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
-Rule Mexico 1944 only - May 1 0:00 0 S
-Rule Mexico 1950 only - Feb 12 0:00 1:00 D
-Rule Mexico 1950 only - Jul 30 0:00 0 S
-Rule Mexico 1996 2000 - Apr Sun>=1 2:00 1:00 D
-Rule Mexico 1996 2000 - Oct lastSun 2:00 0 S
-Rule Mexico 2001 only - May Sun>=1 2:00 1:00 D
-Rule Mexico 2001 only - Sep lastSun 2:00 0 S
-Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
-Rule Mexico 2002 max - Oct lastSun 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-# Quintana Roo
-Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
- -6:00 - CST 1981 Dec 23
- -5:00 Mexico E%sT 1998 Aug 2 2:00
- -6:00 Mexico C%sT
-# Campeche, Yucatan
-Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
- -6:00 - CST 1981 Dec 23
- -5:00 - EST 1982 Dec 2
- -6:00 Mexico C%sT
-# Coahuila, Durango, Nuevo Leon, Tamaulipas
-Zone America/Monterrey -6:41:16 - LMT 1921 Dec 31 23:18:44
- -6:00 - CST 1988
- -6:00 US C%sT 1989
- -6:00 Mexico C%sT
-# Central Mexico
-Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 0:23:24
- -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 Apr 1
- -6:00 Mexico C%sT 2001 Sep 30 02:00
- -6:00 - CST 2002 Feb 20
- -6:00 Mexico C%sT
-# Chihuahua
-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
- -6:00 - CST 1931 Oct
- -7:00 - MST 1932 Apr 1
- -6:00 - CST 1996
- -6:00 Mexico C%sT 1998
- -6:00 - CST 1998 Apr Sun>=1 3:00
- -7:00 Mexico M%sT
-# 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 Apr 1
- -6:00 - CST 1942 Apr 24
- -7:00 - MST 1949 Jan 14
- -8:00 - PST 1970
- -7:00 Mexico M%sT 1999
- -7:00 - MST
-# Baja California Sur, 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
- -7:00 - MST 1931 May 1 23:00
- -6:00 - CST 1931 Oct
- -7:00 - MST 1932 Apr 1
- -6:00 - CST 1942 Apr 24
- -7:00 - MST 1949 Jan 14
- -8:00 - PST 1970
- -7:00 Mexico M%sT
-# Baja California
-Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 0:11:56
- -7:00 - MST 1924
- -8:00 - PST 1927 Jun 10 23:00
- -7:00 - MST 1930 Nov 15
- -8:00 - PST 1931 Apr 1
- -8:00 1:00 PDT 1931 Sep 30
- -8:00 - PST 1942 Apr 24
- -8:00 1:00 PWT 1945 Aug 14 23:00u
- -8:00 1:00 PPT 1945 Nov 12 # Peace
- -8:00 - PST 1948 Apr 5
- -8:00 1:00 PDT 1949 Jan 14
- -8:00 - PST 1954
- -8:00 CA P%sT 1961
- -8:00 - PST 1976
- -8:00 US P%sT 1996
- -8:00 Mexico P%sT 2001
- -8:00 US P%sT 2002 Feb 20
- -8:00 Mexico P%sT
-# From Paul Eggert (2006-03-22):
-# Formerly there was an America/Ensenada zone, which differed from
-# America/Tijuana only in that it did not observe DST from 1976
-# through 1995. This was as per Shanks (1999). But Shanks & Pottenger say
-# Ensenada did not observe DST from 1948 through 1975. Guy Harris reports
-# that the 1987 OAG says "Only Ensenada, Mexicale, San Felipe and
-# Tijuana observe DST," which agrees with Shanks & Pottenger but implies that
-# DST-observance was a town-by-town matter back then. This concerns
-# data after 1970 so most likely there should be at least one Zone
-# other than America/Tijuana for Baja, but it's not clear yet what its
-# name or contents should be.
-#
-# Revillagigedo Is
-# no information
-
-###############################################################################
-
-# Anguilla
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2
- -4:00 - AST
-
-# Antigua and Barbuda
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Antigua -4:07:12 - LMT 1912 Mar 2
- -5:00 - EST 1951
- -4:00 - AST
-
-# Bahamas
-#
-# From Sue Williams (2006-12-07):
-# The Bahamas announced about a month ago that they plan to change their DST
-# rules to sync with the U.S. starting in 2007....
-# http://www.jonesbahamas.com/?c=45&a=10412
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Bahamas 1964 2006 - Oct lastSun 2:00 0 S
-Rule Bahamas 1964 1986 - Apr lastSun 2:00 1:00 D
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Nassau -5:09:24 - LMT 1912 Mar 2
- -5:00 Bahamas E%sT 1976
- -5:00 US E%sT
-
-# Barbados
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Barb 1977 only - Jun 12 2:00 1:00 D
-Rule Barb 1977 1978 - Oct Sun>=1 2:00 0 S
-Rule Barb 1978 1980 - Apr Sun>=15 2:00 1:00 D
-Rule Barb 1979 only - Sep 30 2:00 0 S
-Rule Barb 1980 only - Sep 25 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Barbados -3:58:28 - LMT 1924 # Bridgetown
- -3:58:28 - BMT 1932 # Bridgetown Mean Time
- -4:00 Barb A%sT
-
-# 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
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Belize -5:52:48 - LMT 1912 Apr
- -6:00 Belize C%sT
-
-# Bermuda
-
-# From Dan Jones, reporting in The Royal Gazette (2006-06-26):
-
-# Next year, however, clocks in the US will go forward on the second Sunday
-# in March, until the first Sunday in November. And, after the Time Zone
-# (Seasonal Variation) Bill 2006 was passed in the House of Assembly on
-# Friday, the same thing will happen in Bermuda.
-# http://www.theroyalgazette.com/apps/pbcs.dll/article?AID=/20060529/NEWS/105290135
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Atlantic/Bermuda -4:19:04 - LMT 1930 Jan 1 2:00 # Hamilton
- -4:00 - AST 1974 Apr 28 2:00
- -4:00 Bahamas A%sT 1976
- -4:00 US A%sT
-
-# Cayman Is
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Cayman -5:25:32 - LMT 1890 # Georgetown
- -5:07:12 - KMT 1912 Feb # Kingston Mean Time
- -5:00 - EST
-
-# Costa Rica
-# 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
-Rule CR 1991 1992 - Jan Sat>=15 0:00 1:00 D
-# IATA SSIM (1991-09) says the following was at 1:00;
-# go with Shanks & Pottenger.
-Rule CR 1991 only - Jul 1 0:00 0 S
-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
- -5:36:20 - SJMT 1921 Jan 15 # San Jose Mean Time
- -6:00 CR C%sT
-# Coco
-# no information; probably like America/Costa_Rica
-
-# Cuba
-
-# 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 Evert van der Veer via Steffen Thorsen (2004-10-28):
-# Cuba is not going back to standard time this year.
-# From Paul Eggert (2006-03-22):
-# http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html
-# says that it's due to a problem at the Antonio Guiteras
-# thermoelectric plant, and says "This October there will be no return
-# to normal hours (after daylight saving time)".
-# For now, let's assume that it's a temporary measure.
-
-# From Carlos A. Carnero Delgado (2005-11-12):
-# This year (just like in 2004-2005) there's no change in time zone
-# adjustment in Cuba. We will stay in daylight saving time:
-# http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html
-
-# From Jesper Norgaard Welen (2006-10-21):
-# An article in GRANMA INTERNACIONAL claims that Cuba will end
-# the 3 years of permanent DST next weekend, see
-# http://www.granma.cu/ingles/2006/octubre/lun16/43horario.html
-# "On Saturday night, October 28 going into Sunday, October 29, at 01:00,
-# watches should be set back one hour -- going back to 00:00 hours -- returning
-# to the normal schedule....
-
-# From Paul Eggert (2007-03-02):
-# http://www.granma.cubaweb.cu/english/news/art89.html, dated yesterday,
-# says Cuban clocks will advance at midnight on March 10.
-# For lack of better information, assume Cuba will use US rules,
-# except that it switches at midnight standard time as usual.
-#
-# From Steffen Thorsen (2007-10-25):
-# Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week
-# earlier - on the last Sunday of October, just like in 2006.
-#
-# He supplied these references:
-#
-# http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-8631AFC923AF%7D&language=ES
-# http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cambio_1957044.htm
-#
-# From Alex Kryvenishev (2007-10-25):
-# Here is also article from Granma (Cuba):
-#
-# [Regira] el Horario Normal desde el [proximo] domingo 28 de octubre
-# http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html
-#
-# http://www.worldtimezone.com/dst_news/dst_news_cuba03.html
-
-# From Arthur David Olson (2008-03-09):
-# I'm in Maryland which is now observing United States Eastern Daylight
-# Time. At 9:44 local time I used RealPlayer to listen to
-# <a href="http://media.enet.cu/radioreloj">
-# http://media.enet.cu/radioreloj
-# </a>, a Cuban information station, and heard
-# the time announced as "ocho cuarenta y cuatro" ("eight forty-four"),
-# indicating that Cuba is still on standard time.
-
-# From Steffen Thorsen (2008-03-12):
-# It seems that Cuba will start DST on Sunday, 2007-03-16...
-# It was announced yesterday, according to this source (in Spanish):
-# <a href="http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm">
-# http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm
-# </a>
-#
-# Some more background information is posted here:
-# <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html">
-# http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html
-# </a>
-#
-# The article also says that Cuba has been observing DST since 1963,
-# while Shanks (and tzdata) has 1965 as the first date (except in the
-# 1940's). Many other web pages in Cuba also claim that it has been
-# observed since 1963, but with the exception of 1970 - an exception
-# which is not present in tzdata/Shanks. So there is a chance we need to
-# change some historic records as well.
-#
-# One example:
-# <a href="http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm">
-# http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm
-# </a>
-
-# From Jesper Norgaard Welen (2008-03-13):
-# The Cuban time change has just been confirmed on the most authoritative
-# web site, the Granma. Please check out
-# <a href="http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html">
-# http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html
-# </a>
-#
-# Basically as expected after Steffen Thorsens information, the change
-# will take place midnight between Saturday and Sunday.
-
-# From Arthur David Olson (2008-03-12):
-# Assume Sun>=15 (third Sunday) going forward.
-
-# 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
-Rule Cuba 1940 1942 - Jun Sun>=1 0:00 1:00 D
-Rule Cuba 1940 1942 - Sep Sun>=1 0:00 0 S
-Rule Cuba 1945 1946 - Jun Sun>=1 0:00 1:00 D
-Rule Cuba 1945 1946 - Sep Sun>=1 0:00 0 S
-Rule Cuba 1965 only - Jun 1 0:00 1:00 D
-Rule Cuba 1965 only - Sep 30 0:00 0 S
-Rule Cuba 1966 only - May 29 0:00 1:00 D
-Rule Cuba 1966 only - Oct 2 0:00 0 S
-Rule Cuba 1967 only - Apr 8 0:00 1:00 D
-Rule Cuba 1967 1968 - Sep Sun>=8 0:00 0 S
-Rule Cuba 1968 only - Apr 14 0:00 1:00 D
-Rule Cuba 1969 1977 - Apr lastSun 0:00 1:00 D
-Rule Cuba 1969 1971 - Oct lastSun 0:00 0 S
-Rule Cuba 1972 1974 - Oct 8 0:00 0 S
-Rule Cuba 1975 1977 - Oct lastSun 0:00 0 S
-Rule Cuba 1978 only - May 7 0:00 1:00 D
-Rule Cuba 1978 1990 - Oct Sun>=8 0:00 0 S
-Rule Cuba 1979 1980 - Mar Sun>=15 0:00 1:00 D
-Rule Cuba 1981 1985 - May Sun>=5 0:00 1:00 D
-Rule Cuba 1986 1989 - Mar Sun>=14 0:00 1:00 D
-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 1999 - Mar lastSun 0:00s 1:00 D
-Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S
-Rule Cuba 2000 2006 - Apr Sun>=1 0:00s 1:00 D
-Rule Cuba 2006 max - Oct lastSun 0:00s 0 S
-Rule Cuba 2007 only - Mar Sun>=8 0:00s 1:00 D
-Rule Cuba 2008 max - Mar Sun>=15 0:00s 1:00 D
-
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Havana -5:29:28 - LMT 1890
- -5:29:36 - HMT 1925 Jul 19 12:00 # Havana MT
- -5:00 Cuba C%sT
-
-# Dominica
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
- -4:00 - AST
-
-# Dominican Republic
-
-# From Steffen Thorsen (2000-10-30):
-# Enrique Morales reported to me that the Dominican Republic has changed the
-# time zone to Eastern Standard Time as of Sunday 29 at 2 am....
-# http://www.listin.com.do/antes/261000/republica/princi.html
-
-# From Paul Eggert (2000-12-04):
-# That URL (2000-10-26, in Spanish) says they planned to use US-style DST.
-
-# From Rives McDow (2000-12-01):
-# Dominican Republic changed its mind and presidential decree on Tuesday,
-# November 28, 2000, with a new decree. On Sunday, December 3 at 1:00 AM the
-# Dominican Republic will be reverting to 8 hours from the International Date
-# Line, and will not be using DST in the foreseeable future. The reason they
-# decided to use DST was to be in synch with Puerto Rico, who was also going
-# to implement DST. When Puerto Rico didn't implement DST, the president
-# decided to revert.
-
-
-# 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
-# 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
- -4:00 - AST 2000 Oct 29 02:00
- -5:00 US E%sT 2000 Dec 3 01:00
- -4:00 - AST
-
-# El Salvador
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Salv 1987 1988 - May Sun>=1 0:00 1:00 D
-Rule Salv 1987 1988 - Sep lastSun 0:00 0 S
-# There are too many San Salvadors elsewhere, so use America/El_Salvador
-# instead of America/San_Salvador.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/El_Salvador -5:56:48 - LMT 1921 # San Salvador
- -6:00 Salv C%sT
-
-# Grenada
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Grenada -4:07:00 - LMT 1911 Jul # St George's
- -4:00 - AST
-
-# Guadeloupe
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe a Pitre
- -4:00 - AST
-# St Barthelemy
-Link America/Guadeloupe America/St_Barthelemy
-# St Martin (French part)
-Link America/Guadeloupe America/Marigot
-
-# Guatemala
-#
-# From Gwillim Law (2006-04-22), after a heads-up from Oscar van Vlijmen:
-# Diario Co Latino, at
-# http://www.diariocolatino.com/internacionales/detalles.asp?NewsID=8079,
-# says in an article dated 2006-04-19 that the Guatemalan government had
-# decided on that date to advance official time by 60 minutes, to lessen the
-# impact of the elevated cost of oil.... Daylight saving time will last from
-# 2006-04-29 24:00 (Guatemalan standard time) to 2006-09-30 (time unspecified).
-# From Paul Eggert (2006-06-22):
-# The Ministry of Energy and Mines, press release CP-15/2006
-# (2006-04-19), says DST ends at 24:00. See
-# <http://www.sieca.org.gt/Sitio_publico/Energeticos/Doc/Medidas/Cambio_Horario_Nac_190406.pdf>.
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Guat 1973 only - Nov 25 0:00 1:00 D
-Rule Guat 1974 only - Feb 24 0:00 0 S
-Rule Guat 1983 only - May 21 0:00 1:00 D
-Rule Guat 1983 only - Sep 22 0:00 0 S
-Rule Guat 1991 only - Mar 23 0:00 1:00 D
-Rule Guat 1991 only - Sep 7 0:00 0 S
-Rule Guat 2006 only - Apr 30 0:00 1:00 D
-Rule Guat 2006 only - Oct 1 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-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"
-#
-# From Steffen Thorsen (2006-04-04):
-# I have been informed by users that Haiti observes DST this year like
-# last year, so the current "only" rule for 2005 might be changed to a
-# "max" rule or to last until 2006. (Who knows if they will observe DST
-# next year or if they will extend their DST like US/Canada next year).
-#
-# I have found this article about it (in French):
-# http://www.haitipressnetwork.com/news.cfm?articleID=7612
-#
-# The reason seems to be an energy crisis.
-
-# From Stephen Colebourne (2007-02-22):
-# Some IATA info: Haiti won't be having DST in 2007.
-
-
-# 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
-Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S
-# Shanks & Pottenger say 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 2006 - Apr Sun>=1 0:00 1:00 D
-Rule Haiti 2005 2006 - 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
- -5:00 Haiti E%sT
-
-# Honduras
-# Shanks & Pottenger say 1921 Jan 1; go with Whitman's more precise Apr 1.
-
-# From Paul Eggert (2006-05-05):
-# worldtimezone.com reports a 2006-05-02 Spanish-language AP article
-# saying Honduras will start using DST midnight Saturday, effective 4
-# months until September. La Tribuna reported today
-# <http://www.latribuna.hn/99299.html> that Manuel Zelaya, the president
-# of Honduras, refused to back down on this.
-
-# From Jesper Norgaard Welen (2006-08-08):
-# It seems that Honduras has returned from DST to standard time this Monday at
-# 00:00 hours (prolonging Sunday to 25 hours duration).
-# http://www.worldtimezone.com/dst_news/dst_news_honduras04.html
-
-# From Paul Eggert (2006-08-08):
-# Also see Diario El Heraldo, The country returns to standard time (2006-08-08)
-# <http://www.elheraldo.hn/nota.php?nid=54941&sec=12>.
-# It mentions executive decree 18-2006.
-
-# From Steffen Thorsen (2006-08-17):
-# Honduras will observe DST from 2007 to 2009, exact dates are not
-# published, I have located this authoritative source:
-# http://www.presidencia.gob.hn/noticia.aspx?nId=47
-
-# From Steffen Thorsen (2007-03-30):
-# http://www.laprensahn.com/pais_nota.php?id04962=7386
-# So it seems that Honduras will not enter DST this year....
-
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Hond 1987 1988 - May Sun>=1 0:00 1:00 D
-Rule Hond 1987 1988 - Sep lastSun 0:00 0 S
-Rule Hond 2006 only - May Sun>=1 0:00 1:00 D
-Rule Hond 2006 only - Aug Mon>=1 0:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Tegucigalpa -5:48:52 - LMT 1921 Apr
- -6:00 Hond C%sT
-#
-# Great Swan I ceded by US to Honduras in 1972
-
-# Jamaica
-
-# From Bob Devine (1988-01-28):
-# Follows US rules.
-
-# From U. S. Naval Observatory (1989-01-19):
-# JAMAICA 5 H BEHIND UTC
-
-# From Shanks & Pottenger:
-# 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 Apr 28 2:00
- -5:00 US E%sT 1984
- -5:00 - EST
-
-# Martinique
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Martinique -4:04:20 - LMT 1890 # Fort-de-France
- -4:04:20 - FFMT 1911 May # Fort-de-France MT
- -4:00 - AST 1980 Apr 6
- -4:00 1:00 ADT 1980 Sep 28
- -4:00 - AST
-
-# Montserrat
-# From Paul Eggert (2006-03-22):
-# In 1995 volcanic eruptions forced evacuation of Plymouth, the capital.
-# world.gazetteer.com says Cork Hill is the most populous location now.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
- -4:00 - AST
-
-# Nicaragua
-#
-# This uses Shanks & Pottenger for times before 2005.
-#
-# 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 (2005-05-01):
-# The decree doesn't say anything about daylight saving, but for now let's
-# assume that it is daylight saving....
-#
-# From Gwillim Law (2005-04-21):
-# The Associated Press story on the time change, which can be found at
-# http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html
-# and elsewhere, says (fifth paragraph, translated from Spanish): "The last
-# time that a change of clocks was applied to save energy was in the year 2000
-# during the Arnoldo Aleman administration."...
-# The northamerica file says that Nicaragua has been on UTC-6 continuously
-# since December 1998. I wasn't able to find any details of Nicaraguan time
-# changes in 2000. Perhaps a note could be added to the northamerica file, to
-# the effect that we have indirect evidence that DST was observed in 2000.
-#
-# From Jesper Norgaard Welen (2005-11-02):
-# Nicaragua left DST the 2005-10-02 at 00:00 (local time).
-# http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm
-# (2005-09-26)
-#
-# From Jesper Norgaard Welen (2006-05-05):
-# http://www.elnuevodiario.com.ni/2006/05/01/nacionales/18410
-# (my informal translation)
-# By order of the president of the republic, Enrique Bolanos, Nicaragua
-# advanced by sixty minutes their official time, yesterday at 2 in the
-# morning, and will stay that way until 30.th. of september.
-#
-# From Jesper Norgaard Welen (2006-09-30):
-# http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2006/D-063-2006P-PRN-Cambio-Hora.pdf
-# My informal translation runs:
-# The natural sun time is restored in all the national territory, in that the
-# time is returned one hour at 01:00 am of October 1 of 2006.
-#
-# 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 2005 only - Apr 10 0:00 1:00 D
-Rule Nic 2005 only - Oct Sun>=1 0:00 0 S
-Rule Nic 2006 only - Apr 30 2:00 1:00 D
-Rule Nic 2006 only - Oct Sun>=1 1:00 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?
- -6:00 - CST 1973 May
- -5:00 - EST 1975 Feb 16
- -6:00 Nic C%sT 1992 Jan 1 4:00
- -5:00 - EST 1992 Sep 24
- -6:00 - CST 1993
- -5:00 - EST 1997
- -6:00 Nic C%sT
-
-# Panama
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Panama -5:18:08 - LMT 1890
- -5:19:36 - CMT 1908 Apr 22 # Colon Mean Time
- -5:00 - EST
-
-# Puerto Rico
-# There are too many San Juans elsewhere, so we'll use `Puerto_Rico'.
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Puerto_Rico -4:24:25 - LMT 1899 Mar 28 12:00 # San Juan
- -4:00 - AST 1942 May 3
- -4:00 US A%sT 1946
- -4:00 - AST
-
-# St Kitts-Nevis
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
- -4:00 - AST
-
-# St Lucia
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
- -4:04:00 - CMT 1912 # Castries Mean Time
- -4:00 - AST
-
-# St Pierre and Miquelon
-# There are too many St Pierres elsewhere, so we'll use `Miquelon'.
-# 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
-
-# St Vincent and the Grenadines
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
- -4:04:56 - KMT 1912 # Kingstown Mean Time
- -4:00 - AST
-
-# Turks and Caicos
-#
-# From Chris Dunn in
-# <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=415007>
-# (2007-03-15): In the Turks & Caicos Islands (America/Grand_Turk) the
-# daylight saving dates for time changes have been adjusted to match
-# the recent U.S. change of dates.
-#
-# From Brian Inglis (2007-04-28):
-# http://www.turksandcaicos.tc/calendar/index.htm [2007-04-26]
-# there is an entry for Nov 4 "Daylight Savings Time Ends 2007" and three
-# rows before that there is an out of date entry for Oct:
-# "Eastern Standard Times Begins 2007
-# Clocks are set back one hour at 2:00 a.m. local Daylight Saving Time"
-# indicating that the normal ET rules are followed.
-#
-# From Paul Eggert (2006-05-01):
-# Shanks & Pottenger say they use US DST rules, but IATA SSIM (1991/1998)
-# says they switch at midnight. Go with Shanks & Pottenger.
-#
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule TC 1979 1986 - Apr lastSun 2:00 1:00 D
-Rule TC 1979 2006 - Oct lastSun 2:00 0 S
-Rule TC 1987 2006 - Apr Sun>=1 2:00 1:00 D
-Rule TC 2007 max - Mar Sun>=8 2:00 1:00 D
-Rule TC 2007 max - Nov Sun>=1 2:00 0 S
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Grand_Turk -4:44:32 - LMT 1890
- -5:07:12 - KMT 1912 Feb # Kingston Mean Time
- -5:00 TC E%sT
-
-# British Virgin Is
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
- -4:00 - AST
-
-# Virgin Is
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
- -4:00 - AST