** Description changed: [ 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. The 2023c release reverts the changes done in 2023b. [ Test Plan ] Test cases were added to the autopkgtest to cover the testing: * python: test_2023a * python: test_2023c * python: test_systemv_timezones (for releases <= 20.04 LTS) * 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. This is done by the test_systemv_timezones test case or can be checked manually with 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 ] The autopkgtest for chrony is flaky on jammy and kinetic (see bug #2002910). * 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 releases include the recent changes for generating the debconf template (switching from shell code to Python) and the timezone mappings in convert_timezone(). This is done to ease future tzdata updates since those parts of the packaging need to be updated when timezone are added, renamed, or removed. Having the same - code in that part makes backporting the changes easier. + code in that part makes backporting the changes easier. I added a + consistency check to generate_debconf_templates in 2023c-2 which I want + to backport in a future SRU. Previous SRUs did sometimes forget to update convert_timezone or the exclusion list for the debconf template for the changes from upstream. All added tests (for testing the debconf template and convert_timezone) were also backported to catch missing those changes. The sorting change of the debconf template was included in the SRU to allow taking the debconf translations from later releases.
-- 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/2023c 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. The 2023c release reverts the changes done in 2023b. [ Test Plan ] Test cases were added to the autopkgtest to cover the testing: * python: test_2023a * python: test_2023c * python: test_systemv_timezones (for releases <= 20.04 LTS) * 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. This is done by the test_systemv_timezones test case or can be checked manually with 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 ] The autopkgtest for chrony is flaky on jammy and kinetic (see bug #2002910). * 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 releases include the recent changes for generating the debconf template (switching from shell code to Python) and the timezone mappings in convert_timezone(). This is done to ease future tzdata updates since those parts of the packaging need to be updated when timezone are added, renamed, or removed. Having the same code in that part makes backporting the changes easier. I added a consistency check to generate_debconf_templates in 2023c-2 which I want to backport in a future SRU. Previous SRUs did sometimes forget to update convert_timezone or the exclusion list for the debconf template for the changes from upstream. All added tests (for testing the debconf template and convert_timezone) were also backported to catch missing those changes. The sorting change of the debconf template was included in the SRU to allow taking the debconf translations from later releases. 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
