#UTC CLOCK UBUNTU HOW TO#
#UTC CLOCK UBUNTU WINDOWS#

If at all possible, use RTC in UTC by callingįor Ubuntu versions older than 16.04: you must edit the /etc/default/rcS file and replace 'UTC=yes' with 'UTC=no' (both without the quotes). Time is never updated, it relies on external facilities to maintain it. With time zone changes and daylight saving time adjustments. Warning: The system is configured to read the RTC time in the local time zone. Time zone: Europe/Bucharest (EEST, +0300) TimedatectlWhich should display the following 'RTC in local TZ: yes'. You can then check if Ubuntu uses local time, you can then use the following command: The hardware clock (also known as a real-time clock) of the system can be synchronized with your local time zone or UTC, using the timedatectl command. So this is not recommended and if you can, you should use method B., and fix this from Windows.įor Ubuntu 16.04 and newer, run the following command (thanks to Erwinson Pagtalunan for the update!): If you are running Ubuntu Desktop, you can change the current system’s timezone through the GUI.Before proceeding, note that according to the Ubuntu wiki, ' the advantage of having the hardware clock as UTC is that you don't need to change the hardware clock when moving between timezones or when Daylight Savings Time (DST) begins or ends as UTC does not have DST or timezone offsets'. Invoke the timedatectl command to verify the changes: timedatectl Local time: Wed 15:41:42 EDT

Once you identify which time zone is accurate to your location, run the following command as sudo user: sudo timedatectl set-timezone your_time_zoneįor instance, to change the system’s timezone to America/New_York: sudo timedatectl set-timezone America/New_York To list all available time zones, you can either list the files in the /usr/share/zoneinfo directory or invoke the timedatectl command with the list-timezones option: timedatectl list-timezones. Universal Time Coordinated / Universal Coordinated Time: Successor to: Greenwich Mean Time (GMT) Military name: Zulu Military Time: Longitude: 0° (Prime Meridian) At sea: Longitudes between 7.5° West and 7.5° East: Note: United Kingdom is one hour ahead of UTC / GMT during summer: Time Zone.

The timezones are using “Region/City” format. The system’s timezone in also written to the /etc/timezone file: cat /etc/timezone UTCĬhanging the Timezone Using the timedatectl Command #īefore changing the timezone, you’ll need to find out the long name for the timezone you want to use. Points to: ls -l /etc/localtime lrwxrwxrwx 1 root root 27 Dec 10 12:59 /etc/localtime -> /usr/share/zoneinfo/Etc/UTC This icon refers to the time zone difference in hours from Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC) which are different time standards. In Ubuntu 16. Disable UTC and use Local Time in Ubuntu: In previous Ubuntu editions, you can edit the config file /etc/default/rcS to disable UTC.

#UTC CLOCK UBUNTU WINDOWS#

Another option to view the current system’s timezone is find the file to which the symlink To fix it, either set Ubuntu to maintain RTC in local time or make Windows uses UTC. The system timezone is configured by symlinking /etc/localtime to a binary timezone identifier in the /usr/share/zoneinfo directory. The output below shows that the system’s timezone is set to “UTC”: Local time: Wed 19:33:20 UTC To print the current system’s timezone invoke the timedatectl without any arguments: timedatectl It is available on all modern systemd-based Linux systems, including Ubuntu 20.04.

Other names: Universal Time Coordinated / Universal Coordinated Time. Timedatectl is a command-line utility that allows you to view and change the system’s time and date. UTC / GMT is the basis for local times worldwide. Only the root or user with sudo privilegesĬan set or change the system’s timezone.

#UTC CLOCK UBUNTU HOW TO#

This article describes how to set or change the timezone on Ubuntu 20.04 using the command line, or through the GUI. On Ubuntu, the system’s timezone is set during the install, but it can be easily changed at a later time. 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. Using the correct timezone is essential for many systems related tasks and processes.

Utc clock ubuntu