Bionic verification: $ sudo timedatectl set-ntp false $ sudo timedatectl set-timezone "Africa/Cairo" $ timedatectl set-time "2023-04-27 23:59:58" && sleep 3 && date Fri Apr 28 00:00:01 EET 2023
After upgrade to 2023b-0ubuntu0.18.04.0: $ sudo timedatectl set-time "2023-04-27 23:59:58" && sleep 3 && date Fri Apr 28 01:00:01 EET 2023 ** Tags removed: verification-needed verification-needed-bionic ** Tags added: verification-bionic-bionic verification-done -- 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/2012599 Title: tzdata 2023a/2023b release - Egypt restoring DST Status in tzdata package in Ubuntu: Fix Committed Status in tzdata source package in Bionic: Fix Committed Status in tzdata source package in Focal: Fix Committed Status in tzdata source package in Jammy: Fix Committed Status in tzdata source package in Kinetic: Fix Committed Status in tzdata source package in Lunar: Fix Committed Bug description: [ Impact ] Recently the Egyptian authorities decided to restore DST. The first switch after the change is expected to take place on last Friday of April. The upstream tzdata 2023a release already reflects this change. The 2023a release contains the following changes: * Egypt now uses DST again, from April through October. * This year Morocco springs forward April 23, not April 30. * Palestine delays the start of DST this year. * Much of Greenland still uses DST from 2024 on. [ Test Plan ] Test cases were added to the autopkgtest to cover the testing: * python: test_2023a * python: test_2023b * python-icu: test_2023a (only for kinetic, jammy, focal) So the test plan is to check that the autopkgtest succeeds. Alternatively the python test_2023a can be run manually: * Set system timezone to Egypt (e.g. Africa/Cairo). * Set system time to 2023-04-27 23:59. * Wait and observe what happens at 2023-04-28 0:00 [Test Case for releases <= 20.04 LTS] Additionally, an upstream update of tzdata removed the 'old' SystemV timezones, so we should ensure that they are kept in Ubuntu 20.04 LTS and earlier releases. Subsequently, these should be checked for using the following: diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v SystemV/MST7 | cut -d' ' -f2-) [ Where problems could occur ] * Systems with incorrect timezone set (e.g. located outside of Egypt but still using Egyptian time) may observe unexpected time shift. [ Other Info ] * More information with sources: https://en.wikipedia.org/wiki/Daylight_saving_time_in_Egypt#:~:text=Daylight%20saving%20time%20(DST)%20has,(DST)%20as%20of%202023. The SRUs to the stable include the recent changes for generating the debconf template and the timezone mappings in convert_timezone(). Previous SRUs did forget to update them for the changes from upstream. All added tests were also backported. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tzdata/+bug/2012599/+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
