30 Jun 2023 - rich
Using the timedatectl command is the preferred way to set your timezone. These are the steps to follow in order to change (or set) your timezone on a Debian Linux (bookworm) system
$ timedatectl list-timezones
...skipping...
America/New_York
America/Nipigon
America/Nome
America/Noronha
America/North_Dakota/Beulah
$ sudo timedatectl set-timezone “America/New_York”
and then check to insure that it has been set:
$ timedatectl
Local time: Thu 2023-06-29 23:59:43 EDT
Universal time: Fri 2023-06-30 03:59:43 UTC
RTC time: Fri 2023-06-30 03:59:43
Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no