Change timezone in Ubuntu
To show the system date, time, and other related information, use the command
With this command you can do more than just change the timezone, such as change the date and time.
To change the timezone you should use
timedatectl set-timezone <timezone>. If you don't know the names of the timezone, use
timedatectl list-timezones to list all timezones available.
<timezone> with any of the value listed by the
timedatectl list-timezones command.
timedatectl set-timezone America/Vancouver
timedatectl again to confirm the changes.