How To Set or Change Timezone on CentOS 8
3 min read
Using the correct timezone is essential for many systems related tasks and processes. For example, the cron daemon uses the system’s timezone for executing cron jobs, and the timestamps in the log files are based on the same system’s timezone.
On CentOS, the system’s timezone is set during the install, but it can be easily changed at a later time.
This article describes how to set or change the timezone on CentOS 8 systems.
Checking the Current Timezone
timedatectl is a command-line utility that allows you to view and change the system’s time and date. It is available on all modern systemd-based Linux systems:
The output shows the system’s timezone. In this example the timezone is set to UTC:
Local time: Sat 2020-03-21 21:30:22 UTC Universal time: Sat 2020-03-21 21:30:22 UTC RTC time: Sat 2020-03-21 21:30:22 Time zone: UTC (UTC, +0000) System clock synchronized: yes NTP service: active RTC in local TZ: no
If you get a warning saying, “The system is configured to read the RTC time in the local time zone.”, run the following command to use RTC in UTC:
The system timezone is configured by symlinking
/etc/localtime to a binary timezone identifier in the
/usr/share/zoneinfo directory. Another option to check the timezone is to show the path the symlink points to using the
ls -l /etc/localtime
lrwxrwxrwx. 1 root root 23 Nov 21 23:30 /etc/localtime -> /usr/share/zoneinfo/UTC
Changing Timezone in CentOS
Before changing the timezone, you’ll need to find out the long name for the timezone you want to use. The timezones are using “Region/City” format.
To list all available time zones invoke the
timedatectl command with the
... America/Tijuana America/Toronto America/Tortola America/Vancouver America/Whitehorse America/Winnipeg ...
Once you identify which time zone is accurate to your location, run the following command as root or user with sudo privileges:
sudo timedatectl set-timezone your_time_zone
For example, to change the system’s timezone to
sudo timedatectl set-timezone America/Toronto
timedatectl command to verify the changes:
Local time: Sat 2020-03-21 17:43:39 EDT Universal time: Sat 2020-03-21 21:43:39 UTC RTC time: Sat 2020-03-21 21:43:40 Time zone: America/Toronto (EDT, -0400) System clock synchronized: yes NTP service: active RTC in local TZ: no
Changing the Timezone by Creating a Symlink
If you are running an older version of CentOS and the
timedatectl command is not present on your system, you can change the timezone by symlinking
/etc/localtime to the timezone file in the
Identify the timezone you want to configure and create a symlink:
sudo ln -sf /usr/share/zoneinfo/America/Toronto /etc/localtime
Verify the changes either by listing the
/etc/localtime file or issuing the
Sat Mar 21 17:46:10 EDT 2020
We have shown you how to change your CentOS system’s timezone.
If you are facing any problem, feel free to leave a comment.