From 0d76ca3d57e0ae59dca10be3d3585ae92023e05c Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Fri, 28 Oct 2022 17:57:48 -0700 Subject: [PATCH] Most of Mexico will no longer observe DST Reference: https://github.com/eggert/tz/commit/2050724fa1144bacb0d35c7cd9b862da858406c4 Conflict: NEWS context Also, Chihuahua moves to year-round -06. * NEWS: Mention this. * northamerica (Mexico): No DST after 2022. (America/Ojinaga, America/Chihuahua): Switch from -07 to -06 on 2022-10-30 02:00. --- NEWS | 9 +++++++++ northamerica | 20 ++++++++++++++++---- 2 files changed, 25 insertions(+), 4 deletions(-) diff --git a/NEWS b/NEWS index 82040a2..ae19b08 100644 --- a/NEWS +++ b/NEWS @@ -3,10 +3,19 @@ News for the tz database Unreleased, experimental changes Briefly: + Mexico will no longer observe DST except near the US border. + Chihuahua moves to year-round -06 on 2022-10-30. Fiji no longer observes DST. Changes to future timestamps. + Mexico will no longer observe DST after 2022, except for areas + near the US border that continue to observe US DST rules. + On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves + from -07 (-06 with DST) to year-round -06, thus not changing + its clocks that day. The new law states that Chihuahua + near the US border no longer observes US DST. + Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.) For now, assume DST is suspended indefinitely. diff --git a/northamerica b/northamerica index da84f35..22394cc 100644 --- a/northamerica +++ b/northamerica @@ -2616,6 +2616,12 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # 5- The islands, reefs and keys shall take their timezone from the # longitude they are located at. +# From Paul Eggert (2022-10-28): +# The new Mexican law was published today: +# https://www.dof.gob.mx/nota_detalle.php?codigo=5670045&fecha=28/10/2022 +# This abolishes DST except where US DST rules are observed, +# and in addition changes all of Chihuahua to -06 with no DST. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Mexico 1931 only - May 1 23:00 1:00 D Rule Mexico 1931 only - Oct 1 0:00 0 S @@ -2631,8 +2637,8 @@ 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 +Rule Mexico 2002 2022 - Apr Sun>=1 2:00 1:00 D +Rule Mexico 2002 2022 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] # Quintana Roo; represented by Cancún Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 6:00u @@ -2685,7 +2691,8 @@ Zone America/Ojinaga -6:57:40 - LMT 1922 Jan 1 7:00u -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 -7:00 Mexico M%sT 2010 - -7:00 US M%sT + -7:00 US M%sT 2022 Oct 30 2:00 + -6:00 - CST # Chihuahua (away from US border) Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 @@ -2694,7 +2701,8 @@ Zone America/Chihuahua -7:04:20 - LMT 1922 Jan 1 7:00u -6:00 - CST 1996 -6:00 Mexico C%sT 1998 -6:00 - CST 1998 Apr Sun>=1 3:00 - -7:00 Mexico M%sT + -7:00 Mexico M%sT 2022 Oct 30 2:00 + -6:00 - CST # Sonora Zone America/Hermosillo -7:23:52 - LMT 1922 Jan 1 7:00u -7:00 - MST 1927 Jun 10 23:00 @@ -2792,6 +2800,10 @@ Zone America/Tijuana -7:48:04 - LMT 1922 Jan 1 7:00u # http://dof.gob.mx/nota_detalle.php?codigo=5127480&fecha=06/01/2010 # It has been moved to the 'backward' file. # +# From Paul Eggert (2022-10-28): +# Today's new law states that the entire state of Baja California +# follows US DST rules, which agrees with simplifications noted above. +# # # Revillagigedo Is # no information -- 2.33.0