How To Change TimeZone on Ubuntu 21.10

In this wiki article, we will learn how to change the timezone in Ubuntu 21.04 using the timedatectl command.

To check your current TimeZone

To get detailed information on your Ubuntu date, time, and timezone you use the timedatectl command.

timedatectl

Output:

[email protected]:~# timedatectl
           Local time: Sun 2021-09-12 17:44:34 UTC
       Universal time: Sun 2021-09-12 17:44:34 UTC
             RTC time: Sun 2021-09-12 17:44:34
            Time zone: Etc/UTC (UTC, +0000)
System clock synchronized: yes
          NTP service: active
      RTC in local TZ: no

The TimeZone configuration on Ubuntu OS is stored set by the /etc/localtime file. This file is actually a symbolic link to a timezone file under /usr/share/zoneinfo.

To get a basic view of the timezone you can ls the file to its symbolic link.

ls -l /etc/localtime

Output:

[email protected]:~# ls -l /etc/localtime 
lrwxrwxrwx 1 root root 27 Sep 10 07:39 /etc/localtime -> /usr/share/zoneinfo/Etc/UTC

The system’s timezone is also written to the /etc/timezone file.

cat /etc/timezone

Output:

[email protected]:~# cat /etc/timezone 
Etc/UTC

Listing TimeZones

Using timedatectl command to list TimeZones,

timedatectl list-timezones

Output:

[email protected]:~# timedatectl list-timezones
Africa/Abidjan
Africa/Accra
Africa/Algiers
Africa/Bissau
Africa/Cairo
Africa/Casablanca
Africa/Ceuta
Africa/El_Aaiun
Africa/Johannesburg
Africa/Juba
Africa/Khartoum
.....

Set your Preferred TimeZone

Once you have the list of timezones, you can set the one you prefer.

timedatectl set-timezone your_time_zone

Example:

[email protected]:~# timedatectl set-timezone America/New_York

To confirm your changes were applied by running the timedatactl command.

timedatectl

Output:

[email protected]:~# timedatectl
               Local time: Sun 2021-09-12 13:47:54 EDT
           Universal time: Sun 2021-09-12 17:47:54 UTC
                 RTC time: Sun 2021-09-12 17:47:54
                Time zone: America/New_York (EDT, -0400)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no
[email protected]:~#