Egypt will reintroduce Daylight Saving Time (DST) in 2023

Solution Verified - Updated

Environment

  • Red Hat Enterprise Linux (RHEL)
  • tzdata
  • tzdata-java

Issue

  • The Egyptian government announced that Daylight Saving Time will be applied this summer after a seven-year gap, starting 28 April 2023.
  • What packages should be updated?
  • When will be the fix released?

Resolution

The tzdata packages have been updated to version 2023b, which addresses recent time zone changes. 
Notably:

Egypt will reintroduce daylight saving time (DST) from April through October.
Morocco will observe DST from April 23, 2023 instead of April 30.
This year, Palestine is delaying the start of DST.
This year, Lebanon is delaying the start of DST until April 20.
  • Update the packages by running:
~]# yum update tzdata tzdata-java

Root Cause

  • The tzdata package contains the data files describing both current and historic transitions for various time zones around the world. This data represents changes required by local governments or by time zone boundary changes, as well as changes to UTC offsets and daylight saving time (DST).
  • The upstream tzdata updates are maintained by Content from data.iana.org is not included.IANA.
  • For more details about DST, see: FAQ: DST Time Changing

Diagnostic Steps

  • For reference:

[RHEL9] This content is not included.Bug 2178546 - Update tzdata: Egypt to reintroduce DST
[RHEL8] This content is not included.Bug 2178567 - Update tzdata: Egypt to reintroduce DST
[RHEL7] This content is not included.Bug 2178569 - Update tzdata: Egypt to reintroduce DST

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Product(s)

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