[Bug 2012599] Re: tzdata 2023a release - Egypt restoring DST

[Benjamin Drung]

** Changed in: tzdata (Ubuntu Lunar)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu Kinetic)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu Jammy)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu Focal)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu Bionic)
   Importance: Undecided => Critical

** Changed in: tzdata (Ubuntu Lunar)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/2012599

Title:
  tzdata 2023a release - Egypt restoring DST

Status in tzdata package in Ubuntu:
  Fix Committed
Status in tzdata source package in Bionic:
  New
Status in tzdata source package in Focal:
  New
Status in tzdata source package in Jammy:
  New
Status in tzdata source package in Kinetic:
  New
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.

  [ Test Plan ]

   * 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

  [ 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.

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