A tzdata new timezone database has been released for Debian GNU/Linux 10.

DLA 3366-1: tzdata new timezone database

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Debian LTS Advisory DLA-3366-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
March 24, 2023   https://wiki.debian.org/LTS
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Package : tzdata
Version : 2021a-0+deb10u10

This update includes the changes in tzdata 2023b. Notable
changes are:

- - Egypt uses DST again, starting on April.
- - Palestine and Lebanon delay the start of DST this year.
- - Morocco DST will happen a week earlier on April 23.
- - Adjustments to Greenland's timezones and DST rules.

For Debian 10 buster, this problem has been fixed in version
2021a-0+deb10u10.

We recommend that you upgrade your tzdata packages.

For the detailed security status of tzdata please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/tzdata

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS