That happens also with the current version of tzdata. Starting with:
$ dpkg -l tzdata|grep tzdata ii tzdata 2022a-0ubuntu1 all $ date Mon Mar 4 12:22:38 UTC 2024 # the current timezone (UTC) was configured via dpkg-reconfigure tzdata $ sudo apt reinstall tzdata=2022a-0ubuntu1 Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 342 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://br.archive.ubuntu.com/ubuntu jammy/main amd64 tzdata all 2022a-0ubuntu1 [342 kB] Fetched 342 kB in 0s (11.1 MB/s) Preconfiguring packages ... (Reading database ... 31964 files and directories currently installed.) Preparing to unpack .../tzdata_2022a-0ubuntu1_all.deb ... Unpacking tzdata (2022a-0ubuntu1) over (2022a-0ubuntu1) ... Setting up tzdata (2022a-0ubuntu1) ... Current default time zone: 'Etc/UTC' Local time is now: Mon Mar 4 12:22:55 UTC 2024. Universal Time is now: Mon Mar 4 12:22:55 UTC 2024. Run 'dpkg-reconfigure tzdata' if you wish to change it. Timezone is kept, as expected. Now I set it via timedatectl: ubuntu@j-tz:~$ sudo timedatectl set-timezone EST ubuntu@j-tz:~$ date Mon Mar 4 07:23:42 EST 2024 Reinstall same tzdata: $ sudo apt reinstall tzdata=2022a-0ubuntu1 Reading package lists... Done Building dependency tree... Done Reading state information... Done 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 342 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://br.archive.ubuntu.com/ubuntu jammy/main amd64 tzdata all 2022a-0ubuntu1 [342 kB] Fetched 342 kB in 0s (14.6 MB/s) Preconfiguring packages ... (Reading database ... 31964 files and directories currently installed.) Preparing to unpack .../tzdata_2022a-0ubuntu1_all.deb ... Unpacking tzdata (2022a-0ubuntu1) over (2022a-0ubuntu1) ... Setting up tzdata (2022a-0ubuntu1) ... Current default time zone: 'America/Adak' Local time is now: Mon Mar 4 02:23:57 HST 2024. Universal Time is now: Mon Mar 4 12:23:57 UTC 2024. Run 'dpkg-reconfigure tzdata' if you wish to change it. And we get America/Adak: $ date Mon Mar 4 02:24:08 HST 2024 So I don't think it's a regression, and am updating the tags accordingly. ** Tags removed: regression-update -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to tzdata in Ubuntu. https://bugs.launchpad.net/bugs/2055718 Title: Regression after update: timezone changed unexpectedly Status in tzdata package in Ubuntu: Incomplete Bug description: A user reported this regression on https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/2052739: """ Hello. After automatic upgrade of tzdata from 2023c-0ubuntu0.22.04.2 to 2024a-0ubuntu0.22.04 the previously set EST time zone was automatically changed to "America/Adak" or "America/Indiana/Indianapolis" on all our servers (50+). Look like a bug in tzdata configure script. """ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/2055718/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
