What is true about the file /etc/localtime?

The /etc/localtime file is used to configure the system-wide timezone of the local system that is used

by applications for presentation to the user. It should be either a symlink to or a copy of a timezone

information file that contains the binary data for the configured timezone. The timezone information

files are located under /usr/share/zoneinfo/ and are named after the geographic regions and cities,

such as Europe/Berlin or Etc/UTC. The timezone identifier is extracted from the symlink target name

of /etc/localtime, so it is recommended to use a symlink rather than a copy. The timezone can be

changed by using the timedatectl command or by creating a new symlink to the desired timezone

file123. Reference:

How to Set or Change the Time Zone in Linux | Linuxize

localtime(5) - Linux manual page - man7.org

localtime(5) — Arch manual pages