Hello, I found that after commit d0d949d4b36b0f63db3e25dc1b6ae5065a380c55, Morocco's time is inconsistent between the rearguard mode and the vanguard mode. The gmtoff of the rearguard mode in Morocco from October 28, 2018 to September 19, 2026 is 3600 more than that of the vanguard mode. rearguard mode: [root@ localhost ~]# timedatectl Local time: Sat 2026-06-27 06:26:32 +02 Universal time: Sat 2026-06-27 04:26:32 UTC RTC time: Sat 2026-06-27 04:29:34 Time zone: Africa/Casablanca (+02, +0200) System clock synchronized: no NTP service: active RTC in local TZ: no vanguard mode: [root@localhost ~]# timedatectl Local time: Sat 2026-06-27 05:25:48 +01 Universal time: Sat 2026-06-27 04:25:48 UTC RTC time: Sat 2026-06-27 04:28:50 Time zone: Africa/Casablanca (+01, +0100) System clock synchronized: no NTP service: active RTC in local TZ: no In rearguard mode, the time zone is converted once more. On October 28, 2018, the value of gmtoff changed from 3600 to 7200. zdump Africa/Casablanca -V -c 2018,2027 rearguard mode: Africa/Casablanca Sun Mar 25 01:59:59 2018 UT = Sun Mar 25 01:59:59 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Mar 25 02:00:00 2018 UT = Sun Mar 25 03:00:00 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun May 13 01:59:59 2018 UT = Sun May 13 02:59:59 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun May 13 02:00:00 2018 UT = Sun May 13 02:00:00 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Jun 17 01:59:59 2018 UT = Sun Jun 17 01:59:59 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Jun 17 02:00:00 2018 UT = Sun Jun 17 03:00:00 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun Oct 28 01:59:59 2018 UT = Sun Oct 28 02:59:59 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun Oct 28 02:00:00 2018 UT = Sun Oct 28 04:00:00 2018 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun May 5 00:59:59 2019 UT = Sun May 5 02:59:59 2019 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun May 5 01:00:00 2019 UT = Sun May 5 02:00:00 2019 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Jun 9 00:59:59 2019 UT = Sun Jun 9 01:59:59 2019 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Jun 9 01:00:00 2019 UT = Sun Jun 9 03:00:00 2019 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Apr 19 00:59:59 2020 UT = Sun Apr 19 02:59:59 2020 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Apr 19 01:00:00 2020 UT = Sun Apr 19 02:00:00 2020 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 31 00:59:59 2020 UT = Sun May 31 01:59:59 2020 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 31 01:00:00 2020 UT = Sun May 31 03:00:00 2020 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Apr 11 00:59:59 2021 UT = Sun Apr 11 02:59:59 2021 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Apr 11 01:00:00 2021 UT = Sun Apr 11 02:00:00 2021 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 16 00:59:59 2021 UT = Sun May 16 01:59:59 2021 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 16 01:00:00 2021 UT = Sun May 16 03:00:00 2021 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 27 00:59:59 2022 UT = Sun Mar 27 02:59:59 2022 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 27 01:00:00 2022 UT = Sun Mar 27 02:00:00 2022 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 8 00:59:59 2022 UT = Sun May 8 01:59:59 2022 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 8 01:00:00 2022 UT = Sun May 8 03:00:00 2022 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 19 00:59:59 2023 UT = Sun Mar 19 02:59:59 2023 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 19 01:00:00 2023 UT = Sun Mar 19 02:00:00 2023 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 23 00:59:59 2023 UT = Sun Apr 23 01:59:59 2023 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 23 01:00:00 2023 UT = Sun Apr 23 03:00:00 2023 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 10 00:59:59 2024 UT = Sun Mar 10 02:59:59 2024 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Mar 10 01:00:00 2024 UT = Sun Mar 10 02:00:00 2024 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 14 00:59:59 2024 UT = Sun Apr 14 01:59:59 2024 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 14 01:00:00 2024 UT = Sun Apr 14 03:00:00 2024 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Feb 23 00:59:59 2025 UT = Sun Feb 23 02:59:59 2025 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Feb 23 01:00:00 2025 UT = Sun Feb 23 02:00:00 2025 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 6 00:59:59 2025 UT = Sun Apr 6 01:59:59 2025 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 6 01:00:00 2025 UT = Sun Apr 6 03:00:00 2025 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Feb 15 00:59:59 2026 UT = Sun Feb 15 02:59:59 2026 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Feb 15 01:00:00 2026 UT = Sun Feb 15 02:00:00 2026 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 22 00:59:59 2026 UT = Sun Mar 22 01:59:59 2026 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 22 01:00:00 2026 UT = Sun Mar 22 03:00:00 2026 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sat Sep 19 23:59:59 2026 UT = Sun Sep 20 01:59:59 2026 +02 isdst=1 gmtoff=7200 Africa/Casablanca Sun Sep 20 00:00:00 2026 UT = Sun Sep 20 00:00:00 2026 +00 isdst=0 gmtoff=0 vanguard mode: Africa/Casablanca Sun Mar 25 01:59:59 2018 UT = Sun Mar 25 01:59:59 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Mar 25 02:00:00 2018 UT = Sun Mar 25 03:00:00 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun May 13 01:59:59 2018 UT = Sun May 13 02:59:59 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun May 13 02:00:00 2018 UT = Sun May 13 02:00:00 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Jun 17 01:59:59 2018 UT = Sun Jun 17 01:59:59 2018 +00 isdst=0 gmtoff=0 Africa/Casablanca Sun Jun 17 02:00:00 2018 UT = Sun Jun 17 03:00:00 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun Oct 28 01:59:59 2018 UT = Sun Oct 28 02:59:59 2018 +01 isdst=1 gmtoff=3600 Africa/Casablanca Sun Oct 28 02:00:00 2018 UT = Sun Oct 28 03:00:00 2018 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 5 01:59:59 2019 UT = Sun May 5 02:59:59 2019 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun May 5 02:00:00 2019 UT = Sun May 5 02:00:00 2019 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Jun 9 01:59:59 2019 UT = Sun Jun 9 01:59:59 2019 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Jun 9 02:00:00 2019 UT = Sun Jun 9 03:00:00 2019 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 19 01:59:59 2020 UT = Sun Apr 19 02:59:59 2020 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 19 02:00:00 2020 UT = Sun Apr 19 02:00:00 2020 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 31 01:59:59 2020 UT = Sun May 31 01:59:59 2020 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 31 02:00:00 2020 UT = Sun May 31 03:00:00 2020 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 11 01:59:59 2021 UT = Sun Apr 11 02:59:59 2021 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Apr 11 02:00:00 2021 UT = Sun Apr 11 02:00:00 2021 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 16 01:59:59 2021 UT = Sun May 16 01:59:59 2021 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 16 02:00:00 2021 UT = Sun May 16 03:00:00 2021 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 27 01:59:59 2022 UT = Sun Mar 27 02:59:59 2022 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 27 02:00:00 2022 UT = Sun Mar 27 02:00:00 2022 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 8 01:59:59 2022 UT = Sun May 8 01:59:59 2022 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun May 8 02:00:00 2022 UT = Sun May 8 03:00:00 2022 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 19 01:59:59 2023 UT = Sun Mar 19 02:59:59 2023 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 19 02:00:00 2023 UT = Sun Mar 19 02:00:00 2023 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 23 01:59:59 2023 UT = Sun Apr 23 01:59:59 2023 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 23 02:00:00 2023 UT = Sun Apr 23 03:00:00 2023 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 10 01:59:59 2024 UT = Sun Mar 10 02:59:59 2024 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Mar 10 02:00:00 2024 UT = Sun Mar 10 02:00:00 2024 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 14 01:59:59 2024 UT = Sun Apr 14 01:59:59 2024 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 14 02:00:00 2024 UT = Sun Apr 14 03:00:00 2024 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Feb 23 01:59:59 2025 UT = Sun Feb 23 02:59:59 2025 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Feb 23 02:00:00 2025 UT = Sun Feb 23 02:00:00 2025 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 6 01:59:59 2025 UT = Sun Apr 6 01:59:59 2025 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Apr 6 02:00:00 2025 UT = Sun Apr 6 03:00:00 2025 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Feb 15 01:59:59 2026 UT = Sun Feb 15 02:59:59 2026 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Feb 15 02:00:00 2026 UT = Sun Feb 15 02:00:00 2026 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Mar 22 01:59:59 2026 UT = Sun Mar 22 01:59:59 2026 +00 isdst=1 gmtoff=0 Africa/Casablanca Sun Mar 22 02:00:00 2026 UT = Sun Mar 22 03:00:00 2026 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Sep 20 00:59:59 2026 UT = Sun Sep 20 01:59:59 2026 +01 isdst=0 gmtoff=3600 Africa/Casablanca Sun Sep 20 01:00:00 2026 UT = Sun Sep 20 01:00:00 2026 +00 isdst=0 gmtoff=0