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@ -1,11 +1,11 @@ |
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# @(#)northamerica 7.69 |
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# @(#)northamerica 7.79 |
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# also includes Central America and the Caribbean |
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# This data is by no means authoritative; if you think you know better, |
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# go ahead and edit the file (and please send any changes to |
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# tz@elsie.nci.nih.gov for general use in the future). |
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# From Paul Eggert <eggert@twinsun.com> (1999-03-22): |
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# From Paul Eggert (1999-03-22): |
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# A reliable and entertaining source about time zones is |
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# Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). |
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@ -24,12 +24,16 @@ |
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# His proposal was adopted by the railroads on 1883-11-18 at 12:00, |
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# and the most of the country soon followed suit. |
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# From Paul Eggert <eggert@twinsun.com> (1995-12-19): |
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# From Paul Eggert (2005-04-16): |
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# That 1883 transition occurred at 12:00 new time, not at 12:00 old time. |
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# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005). |
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# From Paul Eggert (1995-12-19): |
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# A good source for time zone historical data in the US is |
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# Thomas G. Shanks, The American Atlas (5th edition), |
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# San Diego: ACS Publications, Inc. (1991). |
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# Make sure you have the errata sheet; the book is somewhat useless without it. |
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# It is the source for the US and Puerto Rico entries below. |
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# It is the source for most of the pre-1991 US and Puerto Rico entries below. |
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# From Paul Eggert (2001-03-06): |
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# Daylight Saving Time was first suggested as a joke by Benjamin Franklin |
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@ -48,7 +52,8 @@ |
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# to push people into bed earlier, and get them up earlier, to make |
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# them healthy, wealthy and wise in spite of themselves. |
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# |
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# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday |
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# -- Robertson Davies, The diary of Samuel Marchbanks, |
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# Clarke, Irwin (1947), XIX, Sunday |
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# |
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# For more about the first ten years of DST in the United States, see |
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# Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html"> |
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@ -78,7 +83,7 @@ |
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# Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful." |
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# </a> (August 1945) by way of confirmation. |
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# From Joseph Gallant <notquite@hotmail.com>, citing |
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# From Joseph Gallant citing |
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# George H. Douglas, _The Early Days of Radio Broadcasting_ (1987): |
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# At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set |
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# to switch to London for Attlee's address, but the American people |
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@ -105,21 +110,26 @@ |
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# |
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# He had scored a 20-second scoop on other broadcasters. |
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# From Arthur David Olson (2005-08-22): |
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# Paul has been careful to use the "US" rules only in those locations |
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# that are part of the United States; this reflects the real scope of |
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# U.S. government action. So even though the "US" rules have changed |
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# in the latest release, other countries won't be affected. |
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
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Rule US 1918 1919 - Mar lastSun 2:00 1:00 D |
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Rule US 1918 1919 - Oct lastSun 2:00 0 S |
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Rule US 1942 only - Feb 9 2:00 1:00 W # War |
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Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace |
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Rule US 1945 only - Sep 30 2:00 0 S |
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Rule US 1967 max - Oct lastSun 2:00 0 S |
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Rule US 1967 2006 - Oct lastSun 2:00 0 S |
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Rule US 1967 1973 - Apr lastSun 2:00 1:00 D |
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Rule US 1974 only - Jan 6 2:00 1:00 D |
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Rule US 1975 only - Feb 23 2:00 1:00 D |
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Rule US 1976 1986 - Apr lastSun 2:00 1:00 D |
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Rule US 1987 max - Apr Sun>=1 2:00 1:00 D |
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# <a href="http://thomas.loc.gov/cgi-bin/bdquery/z?d106:h.r.00177:"> |
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# H.R.177 |
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# </a> (introduced 1999-01-06) would change April to March in the above rule. |
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Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D |
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Rule US 2007 max - Mar Sun>=8 2:00 1:00 D |
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Rule US 2007 max - Nov Sun>=1 2:00 0 S |
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# From Bob Devine (1988-01-28): |
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# ...Alaska (and Hawaii) had the timezone names changed in 1967. |
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@ -197,17 +207,43 @@ Rule US 1987 max - Apr Sun>=1 2:00 1:00 D |
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# Public law 106-564 (2000-12-23) introduced the abbreviation |
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# "Chamorro Standard Time" for time in Guam and the Northern Marianas. |
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# See the file "australasia". |
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# From Arthur David Olson, 2005-08-09 |
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# The following was signed into law on 2005-08-08. |
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# |
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|
# H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS. |
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# (a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15 |
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# U.S.C. 260a(a)) is amended-- |
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# (1) by striking `first Sunday of April' and inserting `second |
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# Sunday of March'; and |
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# (2) by striking `last Sunday of October' and inserting `first |
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# Sunday of November'. |
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# (b) Effective Date- Subsection (a) shall take effect 1 year after the |
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# date of enactment of this Act or March 1, 2007, whichever is later. |
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# (c) Report to Congress- Not later than 9 months after the effective |
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# date stated in subsection (b), the Secretary shall report to Congress |
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# on the impact of this section on energy consumption in the United |
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# States. |
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|
# (d) Right to Revert- Congress retains the right to revert the |
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|
# Daylight Saving Time back to the 2005 time schedules once the |
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# Department study is complete. |
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# US eastern time, represented by New York |
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# Connecticut, Delaware, District of Columbia, most of Florida, |
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# Georgia, southeast Indiana (Clark, Dearborn, Floyd, Harrison, and |
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# Ohio counties), eastern Kentucky, Maine, Maryland, Massachusetts, |
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# Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky |
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# (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts, |
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# New Hampshire, New Jersey, New York, North Carolina, Ohio, |
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# Pennsylvania, Rhode Island, South Carolina, eastern Tennessee, |
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|
# Vermont, Virginia, West Virginia |
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|
# From Dave Cantor (2004-11-02): |
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|
# Early this summer I had the occasion to visit the Mount Washington |
|
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|
|
# Observatory weather station atop (of course!) Mount Washington [, NH].... |
|
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|
# One of the staff members said that the station was on Eastern Standard Time |
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|
# and didn't change their clocks for Daylight Saving ... so that their |
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# reports will always have times which are 5 hours behind UTC. |
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER |
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Rule NYC 1920 only - Mar lastSun 2:00 1:00 D |
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Rule NYC 1920 only - Oct lastSun 2:00 0 S |
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@ -215,7 +251,7 @@ Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D |
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Rule NYC 1921 1954 - Sep lastSun 2:00 0 S |
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Rule NYC 1955 1966 - Oct lastSun 2:00 0 S |
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|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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|
Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00 |
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Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 |
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-5:00 US E%sT 1920 |
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|
-5:00 NYC E%sT 1942 |
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-5:00 US E%sT 1946 |
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|
@ -241,7 +277,7 @@ Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D |
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|
Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S |
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Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S |
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|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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|
Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 |
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Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 |
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|
-6:00 US C%sT 1920 |
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|
-6:00 Chicago C%sT 1936 Mar 1 2:00 |
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|
-5:00 - EST 1936 Nov 15 2:00 |
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|
@ -250,7 +286,7 @@ Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 |
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|
-6:00 Chicago C%sT 1967 |
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-6:00 US C%sT |
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|
# Oliver County, ND switched from mountain to central time on 1992-10-25. |
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Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00 |
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|
Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 |
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|
-7:00 US M%sT 1992 Oct 25 02:00 |
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-6:00 US C%sT |
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@ -269,7 +305,7 @@ Rule Denver 1921 only - May 22 2:00 0 S |
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Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D |
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|
Rule Denver 1965 1966 - Oct lastSun 2:00 0 S |
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|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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|
Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00 |
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Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 |
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-7:00 US M%sT 1920 |
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-7:00 Denver M%sT 1942 |
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-7:00 US M%sT 1946 |
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@ -289,7 +325,7 @@ Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D |
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|
Rule CA 1950 1961 - Sep lastSun 2:00 0 S |
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Rule CA 1962 1966 - Oct lastSun 2:00 0 S |
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|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00 |
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Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 |
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|
-8:00 US P%sT 1946 |
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|
-8:00 CA P%sT 1967 |
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-8:00 US P%sT |
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|
@ -355,10 +391,26 @@ Zone America/Adak 12:13:21 - LMT 1867 Oct 18 |
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|
-11:00 US B%sT 1983 Oct 30 2:00 |
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|
-10:00 US AH%sT 1983 Nov 30 |
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|
-10:00 US HA%sT |
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|
# The following switches don't quite make our 1970 cutoff. |
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# |
|
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|
# Shanks writes that part of southwest Alaska (e.g. Aniak) |
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|
# switched from -11:00 to -10:00 on 1968-09-22 at 02:00, |
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|
# and another part (e.g. Akiak) made the same switch five weeks later. |
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|
# These switches don't quite make our 1970 cutoff. |
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|
# |
|
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|
|
# From David Flater (2004-11-09): |
|
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|
|
# In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska |
|
|
|
|
# Historic Preservation Commission, provided this information, which |
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|
# suggests that Unalaska deviated from statutory time from early 1967 |
|
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|
|
# possibly until 1983: |
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|
# |
|
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|
|
# Minutes of the Unalaska City Council Meeting, January 10, 1967: |
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|
|
# "Except for St. Paul and Akutan, Unalaska is the only important |
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|
# location not on Alaska Standard Time. The following resolution was |
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|
# made by William Robinson and seconded by Henry Swanson: Be it |
|
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|
# resolved that the City of Unalaska hereby goes to Alaska Standard |
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|
# Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday, |
|
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|
|
# January 14, Alaska Standard Time.) This resolution was passed with |
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|
# three votes for and one against." |
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|
# Hawaii |
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|
# |
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|
@ -400,7 +452,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00 |
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|
# Shanks says the 1944 experiment came to an end on 1944-03-17. |
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|
|
# Go with the Arizona State Library instead. |
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Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00 |
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Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 |
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|
-7:00 US M%sT 1944 Jan 1 00:01 |
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|
-7:00 - MST 1944 Apr 1 00:01 |
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|
-7:00 US M%sT 1944 Oct 1 00:01 |
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|
@ -422,9 +474,9 @@ Link America/Denver America/Shiprock |
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|
# Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, |
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|
# Teton, Twin Falls, Valley, Washington counties) and eastern Oregon |
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|
# switched four weeks late in 1974. |
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# |
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|
# |
|
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|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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|
Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 |
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|
Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 |
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|
-8:00 US P%sT 1923 May 13 2:00 |
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|
-7:00 US M%sT 1974 |
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|
-7:00 - MST 1974 Feb 3 2:00 |
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|
@ -435,40 +487,44 @@ Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 |
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|
# For a map of Indiana's time zone regions, see: |
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|
|
# <a href="http://www.mccsc.edu/time.html"> |
|
|
|
|
# What time is it in Indiana? |
|
|
|
|
# </a> (1999-04-06) |
|
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|
|
# </a> (2005-05-03) |
|
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|
|
# |
|
|
|
|
# From Paul Eggert (2005-08-22): |
|
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|
|
# Since 1970, most of Indiana has been like America/Indiana/Indianapolis, |
|
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|
# with the following exceptions: |
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|
# |
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|
|
# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, |
|
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|
|
# Vandenburgh, and Warrick counties have been like America/Chicago. |
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|
# |
|
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|
|
# - Dearborn and Ohio counties have been like America/New_York. |
|
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|
|
# |
|
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|
|
# - Clark, Floyd, and Harrison counties have been like |
|
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|
|
# America/Kentucky/Louisville. |
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|
# |
|
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|
|
# - Crawford, Starke, and Switzerland counties have their own time zone |
|
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|
|
# histories as noted below. |
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|
# |
|
|
|
|
# From Paul Eggert (1995-12-19): |
|
|
|
|
# Indiana generally observes either EST all year, or CST/CDT, |
|
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|
|
# but areas near Cincinnati and Louisville use those cities' timekeeping |
|
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|
|
# and in 1969 and 1970 the whole state observed daylight time; |
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|
|
# and there are other exceptions as noted below. |
|
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|
|
# Shanks partitions Indiana into 345 regions, each with its own time history, |
|
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|
|
# and writes ``Even newspaper reports present contradictory information.'' |
|
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|
|
# Fortunately, most of the complexity occurred before our cutoff date of 1970. |
|
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|
# |
|
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|
|
# Since 1970, EST-only Indiana has been like America/Indianapolis, |
|
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|
|
# with exceptions noted below for Crawford, Starke, and Switzerland counties. |
|
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|
|
# The parts of Indiana not listed below have been like America/Chicago, |
|
|
|
|
# America/Louisville, or America/New_York. |
|
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|
|
# |
|
|
|
|
# Other than Indianapolis, the Indiana place names are so nondescript |
|
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|
|
# that they would be ambiguous if we left them at the `America' level. |
|
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|
|
# So we reluctantly put them all in a subdirectory `America/Indiana'. |
|
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|
|
# |
|
|
|
|
# Most of EST-only Indiana last observed DST in 1970. |
|
|
|
|
|
|
|
|
|
# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn: |
|
|
|
|
# Pam Belluck reported in the New York Times (2001-01-31) that the |
|
|
|
|
# Indiana Legislature is considering a bill to adopt DST statewide. |
|
|
|
|
# Her article mentioned Vevay, whose post office observes a different |
|
|
|
|
# time zone from Danner's Hardware across the street. |
|
|
|
|
# From Paul Eggert (2005-08-16): |
|
|
|
|
# http://www.mccsc.edu/time.html says that Indiana will use DST starting 2006, |
|
|
|
|
# and that many counties may switch either to Central or to Eastern time. |
|
|
|
|
# The county-by-county decisions have not been made yet, so for now assume |
|
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|
|
# that no counties will switch: this assumption is most likely wrong, |
|
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|
|
# but it's the best we can do for now. |
|
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|
|
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER |
|
|
|
|
Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D |
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|
|
|
Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S |
|
|
|
|
Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/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 |
|
|
|
|
@ -477,8 +533,8 @@ Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00 |
|
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|
|
-6:00 - CST 1958 Apr 27 2:00 |
|
|
|
|
-5:00 - EST 1969 |
|
|
|
|
-5:00 US E%sT 1971 |
|
|
|
|
-5:00 - EST |
|
|
|
|
Link America/Indianapolis America/Indiana/Indianapolis |
|
|
|
|
-5:00 - EST 2006 |
|
|
|
|
-5:00 US E%sT |
|
|
|
|
# |
|
|
|
|
# Part of Crawford County, Indiana, last observed DST in 1975, |
|
|
|
|
# and left its clocks alone in 1974. |
|
|
|
|
@ -488,14 +544,15 @@ Rule Marengo 1951 only - Sep lastSun 2:00 0 S |
|
|
|
|
Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D |
|
|
|
|
Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 |
|
|
|
|
-6:00 US C%sT 1951 |
|
|
|
|
-6:00 Marengo C%sT 1961 Apr 30 2:00 |
|
|
|
|
-5:00 - EST 1969 |
|
|
|
|
-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 |
|
|
|
|
-5:00 - EST 2006 |
|
|
|
|
-5:00 US E%sT |
|
|
|
|
# |
|
|
|
|
# Starke County, Indiana |
|
|
|
|
# From Arthur David Olson (1991-10-28): |
|
|
|
|
@ -509,23 +566,25 @@ Rule Starke 1955 1956 - Oct lastSun 2:00 0 S |
|
|
|
|
Rule Starke 1957 1958 - Sep lastSun 2:00 0 S |
|
|
|
|
Rule Starke 1959 1961 - Oct lastSun 2:00 0 S |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 |
|
|
|
|
-6:00 US C%sT 1947 |
|
|
|
|
-6:00 Starke C%sT 1962 Apr 29 2:00 |
|
|
|
|
-5:00 - EST 1963 Oct 27 2:00 |
|
|
|
|
-6:00 US C%sT 1991 Oct 27 2:00 |
|
|
|
|
-5:00 - EST |
|
|
|
|
-5:00 - EST 2006 |
|
|
|
|
-5:00 US E%sT |
|
|
|
|
# |
|
|
|
|
# Switzerland County, Indiana, last observed DST in 1972. |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 |
|
|
|
|
-6:00 US C%sT 1954 Apr 25 2:00 |
|
|
|
|
-5:00 - EST 1969 |
|
|
|
|
-5:00 US E%sT 1973 |
|
|
|
|
-5:00 - EST |
|
|
|
|
-5:00 - EST 2006 |
|
|
|
|
-5:00 US E%sT |
|
|
|
|
|
|
|
|
|
# Part of Kentucky left its clocks alone in 1974. |
|
|
|
|
# This also includes a part of Indiana immediately adjacent to Louisville. |
|
|
|
|
# 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 |
|
|
|
|
@ -535,7 +594,7 @@ Rule Louisville 1946 only - Jun 2 2:00 0 S |
|
|
|
|
Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S |
|
|
|
|
Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/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 |
|
|
|
|
@ -544,7 +603,6 @@ Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00 |
|
|
|
|
-5:00 US E%sT 1974 Jan 6 2:00 |
|
|
|
|
-6:00 1:00 CDT 1974 Oct 27 2:00 |
|
|
|
|
-5:00 US E%sT |
|
|
|
|
Link America/Louisville America/Kentucky/Louisville |
|
|
|
|
# |
|
|
|
|
# Wayne, Clinton, and Russell Counties, Kentucky |
|
|
|
|
# |
|
|
|
|
@ -572,7 +630,7 @@ Link America/Louisville America/Kentucky/Louisville |
|
|
|
|
# Federal Register 65, 160 (2000-08-17), page 50154-50158. |
|
|
|
|
# </a> |
|
|
|
|
# |
|
|
|
|
Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00 |
|
|
|
|
Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 |
|
|
|
|
-6:00 US C%sT 1946 |
|
|
|
|
-6:00 - CST 1968 |
|
|
|
|
-6:00 US C%sT 2000 Oct 29 2:00 |
|
|
|
|
@ -667,21 +725,10 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 |
|
|
|
|
# _Los Angeles Times_ (1998-11-10), A1, A10; it cites |
|
|
|
|
# Jimmy Skaggs, _The Great Guano Rush_ (1994). |
|
|
|
|
|
|
|
|
|
# Old names, for S5 users |
|
|
|
|
|
|
|
|
|
# Link LINK-FROM LINK-TO |
|
|
|
|
Link America/New_York EST5EDT |
|
|
|
|
Link America/Chicago CST6CDT |
|
|
|
|
Link America/Denver MST7MDT |
|
|
|
|
Link America/Los_Angeles PST8PDT |
|
|
|
|
Link America/Indianapolis EST |
|
|
|
|
Link America/Phoenix MST |
|
|
|
|
Link Pacific/Honolulu HST |
|
|
|
|
|
|
|
|
|
################################################################################ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# From Paul Eggert <eggert@twinsun.com> (1999-10-29): |
|
|
|
|
# From Paul Eggert (1999-10-29): |
|
|
|
|
# A good source for time zone historical data outside the US is |
|
|
|
|
# Thomas G. Shanks, The International Atlas (5th edition), |
|
|
|
|
# San Diego: ACS Publications, Inc. (1999). |
|
|
|
|
@ -709,7 +756,7 @@ Link Pacific/Honolulu HST |
|
|
|
|
|
|
|
|
|
# Canada |
|
|
|
|
|
|
|
|
|
# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14): |
|
|
|
|
# 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.... |
|
|
|
|
# |
|
|
|
|
@ -738,7 +785,7 @@ Link Pacific/Honolulu HST |
|
|
|
|
# T: de Terre-Neuve |
|
|
|
|
# Y: du Yukon Yukon |
|
|
|
|
# |
|
|
|
|
# From Paul Eggert <eggert@twinsun.com> (1994-11-22): |
|
|
|
|
# From Paul Eggert (1994-11-22): |
|
|
|
|
# Alas, this sort of thing must be handled by localization software. |
|
|
|
|
|
|
|
|
|
# Unless otherwise specified, the data for Canada are all from Shanks. |
|
|
|
|
@ -1123,7 +1170,7 @@ Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 |
|
|
|
|
# Matthews and Vincent (1998) write that Denare Beach and Creighton |
|
|
|
|
# are like Winnipeg, in violation of Saskatchewan law. |
|
|
|
|
|
|
|
|
|
# From W. Jones <jones@skdad.usask.ca> (1992-11-06): |
|
|
|
|
# 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 |
|
|
|
|
@ -1241,7 +1288,7 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 |
|
|
|
|
|
|
|
|
|
# From Paul Eggert (1999-10-29): |
|
|
|
|
# Dawson switched to PST in 1973. Inuvik switched to MST in 1979. |
|
|
|
|
# Mathew Englander <mathew@io.org> (1996-10-07) gives the following refs: |
|
|
|
|
# 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). |
|
|
|
|
@ -1266,8 +1313,6 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 |
|
|
|
|
# </a> (1999) reports that Pangnirtung operates on eastern time, |
|
|
|
|
# and that Coral Harbour does not observe DST. We don't know when |
|
|
|
|
# Pangnirtung switched to eastern time; we'll guess 1995. |
|
|
|
|
# We'll ignore the claim about Coral Harbour for now, |
|
|
|
|
# since we have no further info. |
|
|
|
|
|
|
|
|
|
# From Rives McDow (1999-11-08): |
|
|
|
|
# On October 31, when the rest of Nunavut went to Central time, |
|
|
|
|
@ -1342,6 +1387,23 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 |
|
|
|
|
# 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. |
|
|
|
|
|
|
|
|
|
# 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 |
|
|
|
|
@ -1365,6 +1427,9 @@ Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay before 1987 |
|
|
|
|
-5:00 NT_YK E%sT 1999 Oct 31 2:00 |
|
|
|
|
-6:00 Canada C%sT 2000 Oct 29 2:00 |
|
|
|
|
-5:00 Canada E%sT |
|
|
|
|
Zone America/Coral_Harbour -5:32:40 - LMT 1884 |
|
|
|
|
-5:00 NT_YK E%sT 1946 |
|
|
|
|
-5:00 - EST |
|
|
|
|
Zone America/Rankin_Inlet -6:08:40 - LMT 1884 |
|
|
|
|
-6:00 NT_YK C%sT 2000 Oct 29 2:00 |
|
|
|
|
-5:00 - EST 2001 Apr 1 3:00 |
|
|
|
|
@ -1404,7 +1469,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 |
|
|
|
|
# Shanks reports that Baja was at -8:00 in 1922/1923. |
|
|
|
|
# Shanks says the 1930 transition in Baja was 1930-11-16. |
|
|
|
|
# Shanks reports no DST during summer 1931. |
|
|
|
|
# Shanks reports a transition at 1032-03-30 23:00, not 1932-04-01. |
|
|
|
|
# Shanks reports a transition at 1932-03-30 23:00, not 1932-04-01. |
|
|
|
|
# Shanks does not report transitions for Baja in 1945 or 1948. |
|
|
|
|
# Shanks reports southern Mexico transitions on 1981-12-01, not 12-23. |
|
|
|
|
# Shanks says Quintana Roo switched to -6:00 on 1982-12-02, and to -5:00 |
|
|
|
|
@ -1420,7 +1485,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 |
|
|
|
|
# Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981 |
|
|
|
|
# and 1988 DST experiments. Go with spin.com.mx. |
|
|
|
|
|
|
|
|
|
# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15): |
|
|
|
|
# From Alan Perry (1996-02-15): |
|
|
|
|
# A guy from our Mexico subsidiary finally found the Presidential Decree |
|
|
|
|
# outlining the timezone changes in Mexico. |
|
|
|
|
# |
|
|
|
|
@ -1731,6 +1796,15 @@ Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose |
|
|
|
|
# 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 (2004-10-28): |
|
|
|
|
# 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 one-year temporary measure. |
|
|
|
|
|
|
|
|
|
# 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 |
|
|
|
|
@ -1759,8 +1833,9 @@ 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 max - Oct lastSun 0:00s 0 S |
|
|
|
|
Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S |
|
|
|
|
Rule Cuba 2000 max - Apr Sun>=1 0:00s 1:00 D |
|
|
|
|
Rule Cuba 2005 max - Oct lastSun 0:00s 0 S |
|
|
|
|
|
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Havana -5:29:28 - LMT 1890 |
|
|
|
|
@ -1840,6 +1915,26 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 |
|
|
|
|
-6:00 Guat C%sT |
|
|
|
|
|
|
|
|
|
# Haiti |
|
|
|
|
# From Gwillim Law (2005-04-15): |
|
|
|
|
# Risto O. Nykanen wrote me that Haiti is now on DST. |
|
|
|
|
# I searched for confirmation, and I found a |
|
|
|
|
# <a href="http://www.haitianconsulate.org/time.doc"> press release |
|
|
|
|
# on the Web page of the Haitian Consulate in Chicago (2005-03-31), |
|
|
|
|
# </a>. Translated from French, it says: |
|
|
|
|
# |
|
|
|
|
# "The Prime Minister's Communication Office notifies the public in general |
|
|
|
|
# and the press in particular that, following a decision of the Interior |
|
|
|
|
# Ministry and the Territorial Collectivities [I suppose that means the |
|
|
|
|
# provinces], Haiti will move to Eastern Daylight Time in the night from next |
|
|
|
|
# Saturday the 2nd to Sunday the 3rd. |
|
|
|
|
# |
|
|
|
|
# "Consequently, the Prime Minister's Communication Office wishes to inform |
|
|
|
|
# the population that the country's clocks will be set forward one hour |
|
|
|
|
# starting at midnight. This provision will hold until the last Saturday in |
|
|
|
|
# October 2005. |
|
|
|
|
# |
|
|
|
|
# "Port-au-Prince, March 31, 2005" |
|
|
|
|
|
|
|
|
|
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
|
|
|
|
Rule Haiti 1983 only - May 8 0:00 1:00 D |
|
|
|
|
Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D |
|
|
|
|
@ -1847,6 +1942,8 @@ Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S |
|
|
|
|
# Shanks says AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. Go with IATA. |
|
|
|
|
Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D |
|
|
|
|
Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S |
|
|
|
|
Rule Haiti 2005 only - Apr Sun>=1 0:00 1:00 D |
|
|
|
|
Rule Haiti 2005 only - Oct lastSun 0:00 0 S |
|
|
|
|
# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
|
|
|
|
Zone America/Port-au-Prince -4:49:20 - LMT 1890 |
|
|
|
|
-4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT |
|
|
|
|
@ -1898,11 +1995,39 @@ Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Olveston |
|
|
|
|
# Nicaragua seems to be back at -6:00 but I have not been able to find when |
|
|
|
|
# they changed from -5:00. |
|
|
|
|
# |
|
|
|
|
# From Steffen Thorsen (2005-04-12): |
|
|
|
|
# I've got reports from 8 different people that Nicaragua just started |
|
|
|
|
# DST on Sunday 2005-04-10, in order to save energy because of |
|
|
|
|
# expensive petroleum. The exact end date for DST is not yet |
|
|
|
|
# announced, only "September" but some sites also say "mid-September". |
|
|
|
|
# Some background information is available on the President's official site: |
|
|
|
|
# http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm |
|
|
|
|
# The Decree, no 23-2005 is available here: |
|
|
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# 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 |
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# |
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# From Paul Eggert (2005-05-01): |
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# The decree doesn't say anything about daylight saving, but for now let's |
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# assume that it is daylight saving and that they'll switch back on the |
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# 3rd Sunday in September. |
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# |
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# From Gwillim Law (2005-04-21): |
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# The Associated Press story on the time change, which can be found at |
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# http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html |
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# and elsewhere, says (fifth paragraph, translated from Spanish): "The last |
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# time that a change of clocks was applied to save energy was in the year 2000 |
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# during the Arnoldo Aleman administration."... |
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# The northamerica file says that Nicaragua has been on UTC-6 continuously |
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# since December 1998. I wasn't able to find any details of Nicaraguan time |
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# changes in 2000. Perhaps a note could be added to the northamerica file, to |
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# the effect that we have indirect evidence that DST was observed in 2000. |
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# |
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
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Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D |
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Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S |
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Rule Nic 1992 only - Jan 1 4:00 1:00 D |
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Rule Nic 1992 only - Sep 24 0:00 0 S |
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Rule Nic 2005 only - Apr 10 0:00 1:00 D |
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Rule Nic 2005 only - Sep 18 0:00 0 S |
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# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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Zone America/Managua -5:45:08 - LMT 1890 |
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-5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? |
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@ -1910,7 +2035,7 @@ Zone America/Managua -5:45:08 - LMT 1890 |
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-5:00 - EST 1975 Feb 16 |
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-6:00 Nic C%sT 1993 Jan 1 4:00 |
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-5:00 - EST 1998 Dec |
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-6:00 - CST |
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-6:00 Nic C%sT |
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# Panama |
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# Zone NAME GMTOFF RULES FORMAT [UNTIL] |
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Tom Lane
20 years ago