Hello Daniel, or anyone else affected,

Accepted tzdata into focal-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/tzdata/2023c-0ubuntu0.20.04.2 in a
few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

-- 
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 Committed
Status in python-tz source package in Jammy:
  Invalid
Status in tzdata source package in Jammy:
  Fix Committed
Status in python-tz source package in Kinetic:
  Invalid
Status in tzdata source package in Kinetic:
  Fix Committed
Status in python-tz source package in Lunar:
  Fix Committed
Status in tzdata source package in Lunar:
  Fix Committed

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-0ubuntu0.22.04.1):

  ```
  $ TZ=America/Ensenada date -d "2023-04-28 13:49 Z"
  Fri Apr 28 05:49:00 PST 2023
  $ TZ=Atlantic/Jan_Mayen date -d "2023-04-28 13:49 Z"
  Fri Apr 28 12:49:00 -01 2023
  $ TZ=Europe/Tiraspol date -d "2023-04-28 13:49 Z"
  Fri Apr 28 16:49:00 MSK 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


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