@@ -1992,6 +1992,37 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884
19921992
19931993# Northwest Territories, Nunavut, Yukon
19941994
1995+ # From Chris Walton (2022-11-06):
1996+ # Whitehorse Star - Thursday April 22, 1965 - page 1
1997+ # title: DST Starts Monday ...
1998+ # https://www.newspapers.com/image/578587481/
1999+ # The title of this first article is wrong and/or misleading.
2000+ # Also, the start time shown in the article is vague; it simply says "after
2001+ # midnight" when it probably should have stated 2:00a.m....
2002+ #
2003+ # Whitehorse Star - Monday October 25, 1965 - page 15 ...
2004+ # https://www.newspapers.com/image/578589147/
2005+ # The 1965 Yukon Council minutes can be found here:
2006+ # http://assets.yukonarchives.ca/PER_YG_06_1965_C20_S02_v1.pdf
2007+ # ... I do not currently believe that NWT touched any of its clocks in 1965....
2008+ #
2009+ # Whitehorse Star - Thursday Feb 24,1966 - page 2
2010+ # title: It's Time for YDT ...
2011+ # https://www.newspapers.com/image/578575979/ ...
2012+ # America/Whitehorse as a permanent change from UTC-9(YST) to
2013+ # UTC-8(PST) at 00:00 on Sunday February 27, 1966....
2014+ #
2015+ # Whitehorse Star - Friday April 28,1972 - page 6
2016+ # title: Daylight Saving Time for N.W.T....
2017+ # https://www.newspapers.com/image/578701610/ ...
2018+ # Nunavut and NWT zones ... DST starting in 1972.... Start and End ...
2019+ # should be the same as the rest of Canada
2020+ #
2021+ #
2022+ # From Paul Eggert (2022-11-06):
2023+ # For now, assume Yukon's 1965-04-22 spring forward was 00:00 -> 02:00, as this
2024+ # seems likely than 02:00 -> 04:00 and matches "after midnight".
2025+
19952026# From Paul Eggert (2006-03-22):
19962027# Dawson switched to PST in 1973. Inuvik switched to MST in 1979.
19972028# Mathew Englander (1996-10-07) gives the following refs:
@@ -2106,6 +2137,13 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884
21062137# * Interpretation Act, RSY 2002, c 125
21072138# https://www.canlii.org/en/yk/laws/stat/rsy-2002-c-125/latest/rsy-2002-c-125.html
21082139
2140+ # From Chris Walton (2022-11-06):
2141+ # The 5th edition of the Atlas of Canada contains a time zone map that
2142+ # shows both legislated and observed time zone boundaries.
2143+ # All communities on Baffin Island are shown to be observing Eastern time.
2144+ # The date on the map is 1984.
2145+ # https://ftp.maps.canada.ca/pub/nrcan_rncan/raster/atlas_5_ed/eng/other/referencemaps/mcr4056.pdf
2146+
21092147# From Rives McDow (1999-09-04):
21102148# Nunavut ... moved ... to incorporate the whole territory into one time zone.
21112149# Nunavut moves to single time zone Oct. 31
@@ -2118,40 +2156,7 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884
21182156# From Paul Eggert (1999-09-20):
21192157# Basic Facts: The New Territory
21202158# http://www.nunavut.com/basicfacts/english/basicfacts_1territory.html
2121- # (1999) reports that Pangnirtung operates on eastern time,
2122- # and that Coral Harbour does not observe DST. We don't know when
2123- # Pangnirtung switched to eastern time; we'll guess 1995.
2124-
2125- # From Rives McDow (1999-11-08):
2126- # On October 31, when the rest of Nunavut went to Central time,
2127- # Pangnirtung wobbled. Here is the result of their wobble:
2128- #
2129- # The following businesses and organizations in Pangnirtung use Central Time:
2130- #
2131- # First Air, Power Corp, Nunavut Construction, Health Center, RCMP,
2132- # Eastern Arctic National Parks, A & D Specialist
2133- #
2134- # The following businesses and organizations in Pangnirtung use Eastern Time:
2135- #
2136- # Hamlet office, All other businesses, Both schools, Airport operator
2137- #
2138- # This has made for an interesting situation there, which warranted the news.
2139- # No one there that I spoke with seems concerned, or has plans to
2140- # change the local methods of keeping time, as it evidently does not
2141- # really interfere with any activities or make things difficult locally.
2142- # They plan to celebrate New Year's turn-over twice, one hour apart,
2143- # so it appears that the situation will last at least that long.
2144- # The Nunavut Intergovernmental Affairs hopes that they will "come to
2145- # their senses", but the locals evidently don't see any problem with
2146- # the current state of affairs.
2147-
2148- # From Michaela Rodrigue, writing in the
2149- # Nunatsiaq News (1999-11-19):
2150- # http://www.nunatsiaqonline.ca/archives/nunavut991130/nvt91119_17.html
2151- # Clyde River, Pangnirtung and Sanikiluaq now operate with two time zones,
2152- # central - or Nunavut time - for government offices, and eastern time
2153- # for municipal offices and schools.... Igloolik [was similar but then]
2154- # made the switch to central time on Saturday, Nov. 6.
2159+ # (1999) reports that ... Coral Harbour does not observe DST.
21552160
21562161# From Paul Eggert (2000-10-02):
21572162# Matthews and Vincent (1998) say the following, but we lack histories
@@ -2310,18 +2315,12 @@ Rule NT_YK 1919 only - Nov 1 0:00 0 S
23102315Rule NT_YK 1942 only - Feb 9 2:00 1:00 W # War
23112316Rule NT_YK 1945 only - Aug 14 23:00u 1:00 P # Peace
23122317Rule NT_YK 1945 only - Sep 30 2:00 0 S
2313- Rule NT_YK 1965 only - Apr lastSun 0:00 2:00 DD
2314- Rule NT_YK 1965 only - Oct lastSun 2:00 0 S
2315- Rule NT_YK 1980 1986 - Apr lastSun 2:00 1:00 D
2316- Rule NT_YK 1980 2006 - Oct lastSun 2:00 0 S
2318+ Rule NT_YK 1972 1986 - Apr lastSun 2:00 1:00 D
2319+ Rule NT_YK 1972 2006 - Oct lastSun 2:00 0 S
23172320Rule NT_YK 1987 2006 - Apr Sun>=1 2:00 1:00 D
2321+ Rule Yukon 1965 only - Apr lastSun 0:00 2:00 DD
2322+ Rule Yukon 1965 only - Oct lastSun 2:00 0 S
23182323# Zone NAME STDOFF RULES FORMAT [UNTIL]
2319- # aka Panniqtuuq
2320- Zone America/Pangnirtung 0 - -00 1921 # trading post est.
2321- -4:00 NT_YK A%sT 1995 Apr Sun>=1 2:00
2322- -5:00 Canada E%sT 1999 Oct 31 2:00
2323- -6:00 Canada C%sT 2000 Oct 29 2:00
2324- -5:00 Canada E%sT
23252324# formerly Frobisher Bay
23262325Zone America/Iqaluit 0 - -00 1942 Aug # Frobisher Bay est.
23272326 -5:00 NT_YK E%sT 1999 Oct 31 2:00
@@ -2354,13 +2353,15 @@ Zone America/Inuvik 0 - -00 1953 # Inuvik founded
23542353 -7:00 NT_YK M%sT 1980
23552354 -7:00 Canada M%sT
23562355Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
2357- -9:00 NT_YK Y%sT 1967 May 28 0:00
2358- -8:00 NT_YK P%sT 1980
2356+ -9:00 NT_YK Y%sT 1965
2357+ -9:00 Yukon Y%sT 1966 Feb 27 0:00
2358+ -8:00 - PST 1980
23592359 -8:00 Canada P%sT 2020 Nov 1
23602360 -7:00 - MST
23612361Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
2362- -9:00 NT_YK Y%sT 1973 Oct 28 0:00
2363- -8:00 NT_YK P%sT 1980
2362+ -9:00 NT_YK Y%sT 1965
2363+ -9:00 Yukon Y%sT 1973 Oct 28 0:00
2364+ -8:00 - PST 1980
23642365 -8:00 Canada P%sT 2020 Nov 1
23652366 -7:00 - MST
23662367
@@ -2582,6 +2583,14 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
25822583# This abolishes DST except where US DST rules are observed,
25832584# and in addition changes all of Chihuahua to -06 with no DST.
25842585
2586+ # From Heitor David Pinto (2022-11-28):
2587+ # Now the northern municipalities want to have the same time zone as the
2588+ # respective neighboring cities in the US, for example Juárez in UTC-7 with
2589+ # DST, matching El Paso, and Ojinaga in UTC-6 with DST, matching Presidio....
2590+ # the president authorized the publication of the decree for November 29,
2591+ # so the time change would occur on November 30 at 0:00.
2592+ # http://puentelibre.mx/noticia/ciudad_juarez_cambio_horario_noviembre_2022/
2593+
25852594# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
25862595Rule Mexico 1931 only - May 1 23:00 1:00 D
25872596Rule Mexico 1931 only - Oct 1 0:00 0 S
@@ -2613,14 +2622,12 @@ Zone America/Merida -5:58:28 - LMT 1922 Jan 1 6:00u
26132622 -6:00 Mexico C%sT
26142623# Coahuila, Nuevo León, Tamaulipas (near US border)
26152624# This includes the following municipalities:
2616- # in Coahuila: Ocampo, Acuña, Zaragoza, Jiménez, Piedras Negras , Nava,
2617- # Guerrero, Hidalgo.
2618- # in Nuevo León: Anáhuac, Los Aldama.
2625+ # in Coahuila: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos , Nava,
2626+ # Ocampo, Piedras Negras, Villa Unión, Zaragoza
2627+ # in Nuevo León: Anáhuac
26192628# in Tamaulipas: Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo,
26202629# Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso, Matamoros.
2621- # See: Inicia mañana Horario de Verano en zona fronteriza, El Universal,
2622- # 2016-03-12
2623- # http://www.eluniversal.com.mx/articulo/estados/2016/03/12/inicia-manana-horario-de-verano-en-zona-fronteriza
2630+ # https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022
26242631Zone America/Matamoros -6:30:00 - LMT 1922 Jan 1 6:00u
26252632 -6:00 - CST 1988
26262633 -6:00 US C%sT 1989
@@ -2639,10 +2646,24 @@ Zone America/Mexico_City -6:36:36 - LMT 1922 Jan 1 7:00u
26392646 -6:00 Mexico C%sT 2001 Sep 30 2:00
26402647 -6:00 - CST 2002 Feb 20
26412648 -6:00 Mexico C%sT
2642- # Chihuahua (near US border)
2649+ # Chihuahua (near US border - western side )
26432650# This includes the municipalities of Janos, Ascensión, Juárez, Guadalupe,
2644- # Práxedis G Guerrero, Coyame del Sotol, Ojinaga, and Manuel Benavides.
2645- # (See the 2016-03-12 El Universal source mentioned above.)
2651+ # and Práxedis G Guerrero.
2652+ # http://gaceta.diputados.gob.mx/PDF/65/2a022/nov/20221124-VII.pdf
2653+ Zone America/Ciudad_Juarez -7:05:56 - LMT 1922 Jan 1 7:00u
2654+ -7:00 - MST 1927 Jun 10 23:00
2655+ -6:00 - CST 1930 Nov 15
2656+ -7:00 Mexico M%sT 1932 Apr 1
2657+ -6:00 - CST 1996
2658+ -6:00 Mexico C%sT 1998
2659+ -6:00 - CST 1998 Apr Sun>=1 3:00
2660+ -7:00 Mexico M%sT 2010
2661+ -7:00 US M%sT 2022 Oct 30 2:00
2662+ -6:00 - CST 2022 Nov 30 0:00
2663+ -7:00 US M%sT
2664+ # Chihuahua (near US border - eastern side)
2665+ # The municipalities of Coyame del Sotol, Ojinaga, and Manuel Benavides.
2666+ # http://gaceta.diputados.gob.mx/PDF/65/2a022/nov/20221124-VII.pdf
26462667Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u
26472668 -7:00 - MST 1927 Jun 10 23:00
26482669 -6:00 - CST 1930 Nov 15
@@ -2652,7 +2673,8 @@ Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u
26522673 -6:00 - CST 1998 Apr Sun>=1 3:00
26532674 -7:00 Mexico M%sT 2010
26542675 -7:00 US M%sT 2022 Oct 30 2:00
2655- -6:00 - CST
2676+ -6:00 - CST 2022 Nov 30 0:00
2677+ -6:00 US C%sT
26562678# Chihuahua (away from US border)
26572679Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u
26582680 -7:00 - MST 1927 Jun 10 23:00
@@ -2674,6 +2696,18 @@ Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u
26742696 -7:00 Mexico M%sT 1999
26752697 -7:00 - MST
26762698
2699+ # Baja California Sur, Nayarit (except Bahía de Banderas), Sinaloa
2700+ Zone America/Mazatlan -7:05:40 - LMT 1922 Jan 1 7:00u
2701+ -7:00 - MST 1927 Jun 10 23:00
2702+ -6:00 - CST 1930 Nov 15
2703+ -7:00 Mexico M%sT 1932 Apr 1
2704+ -6:00 - CST 1942 Apr 24
2705+ -7:00 - MST 1949 Jan 14
2706+ -8:00 - PST 1970
2707+ -7:00 Mexico M%sT
2708+
2709+ # Bahía de Banderas
2710+
26772711# From Alexander Krivenyshev (2010-04-21):
26782712# According to news, Bahía de Banderas (Mexican state of Nayarit)
26792713# changed time zone UTC-7 to new time zone UTC-6 on April 4, 2010 (to
@@ -2701,17 +2735,6 @@ Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u
27012735# From Arthur David Olson (2010-05-01):
27022736# Use "Bahia_Banderas" to keep the name to fourteen characters.
27032737
2704- # Mazatlán
2705- Zone America/Mazatlan -7:05:40 - LMT 1922 Jan 1 7:00u
2706- -7:00 - MST 1927 Jun 10 23:00
2707- -6:00 - CST 1930 Nov 15
2708- -7:00 Mexico M%sT 1932 Apr 1
2709- -6:00 - CST 1942 Apr 24
2710- -7:00 - MST 1949 Jan 14
2711- -8:00 - PST 1970
2712- -7:00 Mexico M%sT
2713-
2714- # Bahía de Banderas
27152738Zone America/Bahia_Banderas -7:01:00 - LMT 1922 Jan 1 7:00u
27162739 -7:00 - MST 1927 Jun 10 23:00
27172740 -6:00 - CST 1930 Nov 15
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