This also affects Western Sahara * NEWS: Mention this. * africa (Morocco): Remove transitions after 2026. (Africa/Casablanca, Africa/El_Aaiun): Switch to +00 on 2026-09-20 at 02:00. --- NEWS | 5 ++ africa | 169 ++++----------------------------------------------------- 2 files changed, 15 insertions(+), 159 deletions(-) diff --git a/NEWS b/NEWS index 07e5fc69..459af904 100644 --- a/NEWS +++ b/NEWS @@ -4,6 +4,7 @@ Unreleased, experimental changes Briefly: Alberta moved to permanent -06 on 2026-06-18. + Morocco moves to permanent +00 on 2026-09-20. More integer overflow bugs have been fixed in zic. Changes to future timestamps @@ -16,6 +17,10 @@ Unreleased, experimental changes 02:00 instead, for the same reason we introduced a similarly temporary hack for British Columbia in 2026b. + Morocco plans to move back to permanent UTC, without daylight + saving time transitions, on 2026-09-20 at 02:00. This also + affects Western Sahara. + Changes to code zic no longer overflows integers when processing outlandish input diff --git a/africa b/africa index ec067bee..3517b84c 100644 --- a/africa +++ b/africa @@ -850,33 +850,12 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # The return to legal GMT time will take place this Sunday, March 19 at 3 a.m. # ... the return to GMT+1 will be made on Sunday April 23, 2023 at 2 a.m. # https://www.mmsp.gov.ma/fr/actualites/passage-à-l%E2%80%99heure-gmt-à-partir-du-dimanche-19-mars-2023 -# -# From Paul Eggert (2023-03-14): -# For now, guess that in the future Morocco will fall back at 03:00 -# the last Sunday before Ramadan, and spring forward at 02:00 the -# first Sunday after one day after Ramadan. To implement this, -# transition dates and times for 2019 through 2087 were determined by -# running the following program under GNU Emacs 28.2. (This algorithm -# also produces the correct transition dates for 2016 through 2018, -# though the times differ due to Morocco's time zone change in 2018.) -# (let ((islamic-year 1440)) -# (require 'cal-islam) -# (while (< islamic-year 1511) -# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) -# (b (+ 1 (calendar-islamic-to-absolute (list 10 1 islamic-year)))) -# (sunday 0)) -# (while (/= sunday (mod (setq a (1- a)) 7))) -# (while (/= sunday (mod b 7)) -# (setq b (1+ b))) -# (setq a (calendar-gregorian-from-absolute a)) -# (setq b (calendar-gregorian-from-absolute b)) -# (insert -# (format -# (concat "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t-1:00\t-\n" -# "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t0\t-\n") -# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) -# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) -# (setq islamic-year (+ 1 islamic-year)))) + +# From Paul Eggert (2026-06-25): +# https://www.moroccoworldnews.com/2026/06/325034/confirmed-morocco-to-restore... +# Today the Moroccan government adopted Decree No. 2.26.530, which abrogates +# the 2018 decree that put it at +01 with daylight saving during Ramadan. +# The plan is to go back to +00 without DST on 2026-09-20 at 02:00. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 - @@ -936,143 +915,14 @@ Rule Morocco 2025 only - Feb 23 3:00 -1:00 - Rule Morocco 2025 only - Apr 6 2:00 0 - Rule Morocco 2026 only - Feb 15 3:00 -1:00 - Rule Morocco 2026 only - Mar 22 2:00 0 - -Rule Morocco 2027 only - Feb 7 3:00 -1:00 - -Rule Morocco 2027 only - Mar 14 2:00 0 - -Rule Morocco 2028 only - Jan 23 3:00 -1:00 - -Rule Morocco 2028 only - Mar 5 2:00 0 - -Rule Morocco 2029 only - Jan 14 3:00 -1:00 - -Rule Morocco 2029 only - Feb 18 2:00 0 - -Rule Morocco 2029 only - Dec 30 3:00 -1:00 - -Rule Morocco 2030 only - Feb 10 2:00 0 - -Rule Morocco 2030 only - Dec 22 3:00 -1:00 - -Rule Morocco 2031 only - Jan 26 2:00 0 - -Rule Morocco 2031 only - Dec 14 3:00 -1:00 - -Rule Morocco 2032 only - Jan 18 2:00 0 - -Rule Morocco 2032 only - Nov 28 3:00 -1:00 - -Rule Morocco 2033 only - Jan 9 2:00 0 - -Rule Morocco 2033 only - Nov 20 3:00 -1:00 - -Rule Morocco 2033 only - Dec 25 2:00 0 - -Rule Morocco 2034 only - Nov 5 3:00 -1:00 - -Rule Morocco 2034 only - Dec 17 2:00 0 - -Rule Morocco 2035 only - Oct 28 3:00 -1:00 - -Rule Morocco 2035 only - Dec 9 2:00 0 - -Rule Morocco 2036 only - Oct 19 3:00 -1:00 - -Rule Morocco 2036 only - Nov 23 2:00 0 - -Rule Morocco 2037 only - Oct 4 3:00 -1:00 - -Rule Morocco 2037 only - Nov 15 2:00 0 - -Rule Morocco 2038 only - Sep 26 3:00 -1:00 - -Rule Morocco 2038 only - Oct 31 2:00 0 - -Rule Morocco 2039 only - Sep 18 3:00 -1:00 - -Rule Morocco 2039 only - Oct 23 2:00 0 - -Rule Morocco 2040 only - Sep 2 3:00 -1:00 - -Rule Morocco 2040 only - Oct 14 2:00 0 - -Rule Morocco 2041 only - Aug 25 3:00 -1:00 - -Rule Morocco 2041 only - Sep 29 2:00 0 - -Rule Morocco 2042 only - Aug 10 3:00 -1:00 - -Rule Morocco 2042 only - Sep 21 2:00 0 - -Rule Morocco 2043 only - Aug 2 3:00 -1:00 - -Rule Morocco 2043 only - Sep 13 2:00 0 - -Rule Morocco 2044 only - Jul 24 3:00 -1:00 - -Rule Morocco 2044 only - Aug 28 2:00 0 - -Rule Morocco 2045 only - Jul 9 3:00 -1:00 - -Rule Morocco 2045 only - Aug 20 2:00 0 - -Rule Morocco 2046 only - Jul 1 3:00 -1:00 - -Rule Morocco 2046 only - Aug 5 2:00 0 - -Rule Morocco 2047 only - Jun 23 3:00 -1:00 - -Rule Morocco 2047 only - Jul 28 2:00 0 - -Rule Morocco 2048 only - Jun 7 3:00 -1:00 - -Rule Morocco 2048 only - Jul 19 2:00 0 - -Rule Morocco 2049 only - May 30 3:00 -1:00 - -Rule Morocco 2049 only - Jul 4 2:00 0 - -Rule Morocco 2050 only - May 15 3:00 -1:00 - -Rule Morocco 2050 only - Jun 26 2:00 0 - -Rule Morocco 2051 only - May 7 3:00 -1:00 - -Rule Morocco 2051 only - Jun 18 2:00 0 - -Rule Morocco 2052 only - Apr 28 3:00 -1:00 - -Rule Morocco 2052 only - Jun 2 2:00 0 - -Rule Morocco 2053 only - Apr 13 3:00 -1:00 - -Rule Morocco 2053 only - May 25 2:00 0 - -Rule Morocco 2054 only - Apr 5 3:00 -1:00 - -Rule Morocco 2054 only - May 10 2:00 0 - -Rule Morocco 2055 only - Mar 28 3:00 -1:00 - -Rule Morocco 2055 only - May 2 2:00 0 - -Rule Morocco 2056 only - Mar 12 3:00 -1:00 - -Rule Morocco 2056 only - Apr 23 2:00 0 - -Rule Morocco 2057 only - Mar 4 3:00 -1:00 - -Rule Morocco 2057 only - Apr 8 2:00 0 - -Rule Morocco 2058 only - Feb 17 3:00 -1:00 - -Rule Morocco 2058 only - Mar 31 2:00 0 - -Rule Morocco 2059 only - Feb 9 3:00 -1:00 - -Rule Morocco 2059 only - Mar 23 2:00 0 - -Rule Morocco 2060 only - Feb 1 3:00 -1:00 - -Rule Morocco 2060 only - Mar 7 2:00 0 - -Rule Morocco 2061 only - Jan 16 3:00 -1:00 - -Rule Morocco 2061 only - Feb 27 2:00 0 - -Rule Morocco 2062 only - Jan 8 3:00 -1:00 - -Rule Morocco 2062 only - Feb 12 2:00 0 - -Rule Morocco 2062 only - Dec 31 3:00 -1:00 - -Rule Morocco 2063 only - Feb 4 2:00 0 - -Rule Morocco 2063 only - Dec 16 3:00 -1:00 - -Rule Morocco 2064 only - Jan 27 2:00 0 - -Rule Morocco 2064 only - Dec 7 3:00 -1:00 - -Rule Morocco 2065 only - Jan 11 2:00 0 - -Rule Morocco 2065 only - Nov 22 3:00 -1:00 - -Rule Morocco 2066 only - Jan 3 2:00 0 - -Rule Morocco 2066 only - Nov 14 3:00 -1:00 - -Rule Morocco 2066 only - Dec 26 2:00 0 - -Rule Morocco 2067 only - Nov 6 3:00 -1:00 - -Rule Morocco 2067 only - Dec 11 2:00 0 - -Rule Morocco 2068 only - Oct 21 3:00 -1:00 - -Rule Morocco 2068 only - Dec 2 2:00 0 - -Rule Morocco 2069 only - Oct 13 3:00 -1:00 - -Rule Morocco 2069 only - Nov 17 2:00 0 - -Rule Morocco 2070 only - Oct 5 3:00 -1:00 - -Rule Morocco 2070 only - Nov 9 2:00 0 - -Rule Morocco 2071 only - Sep 20 3:00 -1:00 - -Rule Morocco 2071 only - Nov 1 2:00 0 - -Rule Morocco 2072 only - Sep 11 3:00 -1:00 - -Rule Morocco 2072 only - Oct 16 2:00 0 - -Rule Morocco 2073 only - Aug 27 3:00 -1:00 - -Rule Morocco 2073 only - Oct 8 2:00 0 - -Rule Morocco 2074 only - Aug 19 3:00 -1:00 - -Rule Morocco 2074 only - Sep 30 2:00 0 - -Rule Morocco 2075 only - Aug 11 3:00 -1:00 - -Rule Morocco 2075 only - Sep 15 2:00 0 - -Rule Morocco 2076 only - Jul 26 3:00 -1:00 - -Rule Morocco 2076 only - Sep 6 2:00 0 - -Rule Morocco 2077 only - Jul 18 3:00 -1:00 - -Rule Morocco 2077 only - Aug 22 2:00 0 - -Rule Morocco 2078 only - Jul 10 3:00 -1:00 - -Rule Morocco 2078 only - Aug 14 2:00 0 - -Rule Morocco 2079 only - Jun 25 3:00 -1:00 - -Rule Morocco 2079 only - Aug 6 2:00 0 - -Rule Morocco 2080 only - Jun 16 3:00 -1:00 - -Rule Morocco 2080 only - Jul 21 2:00 0 - -Rule Morocco 2081 only - Jun 1 3:00 -1:00 - -Rule Morocco 2081 only - Jul 13 2:00 0 - -Rule Morocco 2082 only - May 24 3:00 -1:00 - -Rule Morocco 2082 only - Jun 28 2:00 0 - -Rule Morocco 2083 only - May 16 3:00 -1:00 - -Rule Morocco 2083 only - Jun 20 2:00 0 - -Rule Morocco 2084 only - Apr 30 3:00 -1:00 - -Rule Morocco 2084 only - Jun 11 2:00 0 - -Rule Morocco 2085 only - Apr 22 3:00 -1:00 - -Rule Morocco 2085 only - May 27 2:00 0 - -Rule Morocco 2086 only - Apr 14 3:00 -1:00 - -Rule Morocco 2086 only - May 19 2:00 0 - -Rule Morocco 2087 only - Mar 30 3:00 -1:00 - -Rule Morocco 2087 only - May 11 2:00 0 - -# For dates after the somewhat-arbitrary cutoff of 2087, assume that -# Morocco will no longer observe DST. At some point this table will -# need to be extended, though quite possibly Morocco will change the -# rules first. # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 0:00 Morocco %z 1984 Mar 16 1:00 - %z 1986 0:00 Morocco %z 2018 Oct 28 3:00 - 1:00 Morocco %z + 1:00 Morocco %z 2026 Sep 20 2:00 + 0:00 - %z # Western Sahara # @@ -1088,7 +938,8 @@ Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún -1:00 - %z 1976 Apr 14 0:00 Morocco %z 2018 Oct 28 3:00 - 1:00 Morocco %z + 1:00 Morocco %z 2026 Sep 20 2:00 + 0:00 - %z # Botswana # Burundi -- 2.53.0