From 09b419079a2c8c0c8b60f3e1a471b55a1ed7f73e Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Sun, 15 Mar 2026 12:19:06 -0700 Subject: [PROPOSED] New zone America/Cranbrook for East Kootenay, BC (Thanks to Chris Walton.) * NEWS: Mention this. * northamerica, zone.tab, zone1970.tab, zonenow.tab: (America/Cranbrook): New zone. It mimics America/Edmonton until 2026-11-01 02:00, except (like Shanks & Pottenger) it omits DST in 1920, 1921 and 1947. --- NEWS | 4 ++++ northamerica | 10 ++++++++++ zone.tab | 1 + zone1970.tab | 1 + zonenow.tab | 3 +++ 5 files changed, 19 insertions(+) diff --git a/NEWS b/NEWS index d7bf5a3c..905a086d 100644 --- a/NEWS +++ b/NEWS @@ -15,6 +15,10 @@ Unreleased, experimental changes a limitation in CLDR v48.1 (2026-01-08). This temporary hack is planned to be removed after CLDR is fixed. + The new zone America/Cranbrook is for East Kootenay, BC, which + moves from MST/MDT to year-round MST on 2026-11-01 at 02:00. + (Thanks to Chris Walton.) + Changes to code zic no longer mishandles a last transition to a new time type. diff --git a/northamerica b/northamerica index ee0dc50a..a5b04779 100644 --- a/northamerica +++ b/northamerica @@ -2021,6 +2021,16 @@ Zone America/Fort_Nelson -8:10:47 - LMT 1884 -8:00 Vanc P%sT 1987 -8:00 Canada P%sT 2015 Mar 8 2:00 -7:00 - MST +# From Chris Walton (2026-03-15): +# The Regional District of East Kootenay is planning to move to year-round +# Mountain Standard Time (MST) on November 1, 2026.... +# https://www.rdek.bc.ca/news/entry/rdek_board_moves_to_transition_to_year_round_mountain_standard_time +Zone America/Cranbrook -7:43:04 - LMT 1906 Sep + -7:00 Edm M%sT 1920 + -7:00 Canada M%sT 1972 + -7:00 Edm M%sT 1974 + -7:00 Canada M%sT 2026 Nov 1 02:00 + -7:00 - MST # For Creston see America/Phoenix. # Northwest Territories, Nunavut, Yukon diff --git a/zone.tab b/zone.tab index d74dfd86..80037dcd 100644 --- a/zone.tab +++ b/zone.tab @@ -125,6 +125,7 @@ CA +5333-11328 America/Edmonton Mountain - AB, BC(E), NT(E), SK(W) CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) CA +682059-1334300 America/Inuvik Mountain - NT (west) CA +4906-11631 America/Creston MST - BC (Creston) +CA +4931-11546 America/Cranbrook MST - BC (E Kootenay) CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) diff --git a/zone1970.tab b/zone1970.tab index 104c3efe..d70a46c7 100644 --- a/zone1970.tab +++ b/zone1970.tab @@ -115,6 +115,7 @@ CA +5017-10750 America/Swift_Current CST - SK (midwest) CA +5333-11328 America/Edmonton Mountain - AB, BC(E), NT(E), SK(W) CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) CA +682059-1334300 America/Inuvik Mountain - NT (west) +CA +4931-11546 America/Cranbrook MST - BC (E Kootenay) CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) diff --git a/zonenow.tab b/zonenow.tab index 9f01a9f9..43b7bfc3 100644 --- a/zonenow.tab +++ b/zonenow.tab @@ -64,6 +64,9 @@ XX +4916-12307 America/Vancouver British Columbia (most areas) # -07 - MST XX +332654-1120424 America/Phoenix Mountain Standard (MST) - Arizona; western Mexico; Yukon # +# -07/-06 - MST/MDT (North America DST) until 2026-11-01 02:00; then MST +XX +4931-11546 America/Cranbrook MST - BC (E Kootenay) +# # -07/-06 - MST/MDT (North America DST) XX +394421-1045903 America/Denver Mountain (MST/MDT) - US & Canada; Mexico near US border # -- 2.51.0