This bug was fixed in the package tzdata - 2023c-0ubuntu0.22.04.2
---------------
tzdata (2023c-0ubuntu0.22.04.2) jammy; urgency=medium
* Build tzdata with PACKRATLIST=zone.tab. In combination with
PACKRATDATA=backzone (which is used since 2023c-0ubuntu0.22.04.1), time
zones that differ pre-1970 and had been resurrected will not incur changes
to data from 1970 on. This also removes Asia/Hanoi again. Upgrade
Pacific/Enderbury to Pacific/Kanton again. (LP: #2017999)
* Add an autopkgtest test case for post-1970 symlink consistency
* Update debconf template and translations
-- Benjamin Drung <bdr...@ubuntu.com> Sat, 20 May 2023 01:26:56 +0200
** Changed in: tzdata (Ubuntu Focal)
Status: Fix Committed => Fix Released
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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
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