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-- 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/2017999 Title: tzdata 2023c-0ubuntu0.22.04.1 might have some inconsistency Status in python-tz package in Ubuntu: Fix Released Status in tzdata package in Ubuntu: Fix Released Status in python-tz source package in Focal: Invalid Status in tzdata source package in Focal: Fix Released Status in python-tz source package in Jammy: Invalid Status in tzdata source package in Jammy: Fix Released Status in python-tz source package in Kinetic: Invalid Status in tzdata source package in Kinetic: Fix Released Status in python-tz source package in Lunar: Fix Committed Status in tzdata source package in Lunar: Fix Released Bug description: [ Impact ] Recent updates have been using `PACKRATDATA=backzone` in order to add all out-of-scope lower-quality pre-1970 data back that existed in earlier tzadata releases (see bug #2003797). However it also leads to time zones like America/Ensenada, Atlantic/Jan_Mayen, Europe/Tiraspol, and Pacific/Enderbury to change: compared to 2023c-0ubuntu0.22.04.0 - America/Ensenada->only dst changes until 2022 are shown - Atlantic/Jan_Mayen->now valid data is shown - Europe/Tiraspol->only dst changes until 2010 are shown [ Test Plan ] Add an autopkgtest test case for post-1970 symlink consistency: Check that the timezones for today and in half a year (= to cover DST changes) do not change compared to building them without `PACKRATDATA=backzone`. The mentioned timezones that differed can also be tested manually. Running following commands should have the same output (the output mentioned here is from tzdata 2023c-0ubuntu0.22.04.0): ``` $ TZ=America/Ensenada date -d "2023-04-28 13:49 Z" Fri Apr 28 06:49:00 PDT 2023 $ TZ=Atlantic/Jan_Mayen date -d "2023-04-28 13:49 Z" Fri Apr 28 15:49:00 CEST 2023 $ TZ=Europe/Tiraspol date -d "2023-04-28 13:49 Z" Fri Apr 28 16:49:00 EEST 2023 ``` [ Where problems could occur ] Timezone data could be wrong. Systems with incorrect timezone set may observe unexpected time shift when updating the package. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python-tz/+bug/2017999/+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
