timedatectl - Control the system time and date

To display the current settings $ timedatectl

To Show current time settings $ timedatectl status

To Show properties of systemd-timedated $ timedatectl show

To change settings $ sudo timedatectl set-timezone Asia/Hong_Kong $ sudo timedatectl set-timezone Asia/Tokyo

To list the time zones $ timedatectl list-timezones | column

To display the number of time-zones available $ timedatectl list-timezones | wc -l

To Show status of systemd-timesyncd $ timedatectl timesync-status

To Show properties of systemd-timesyncd $ timedatectl show-timesync

To Show all properties, including empty ones $ timedatectl -a

To Set system time $ timedatectl set-time <TIME>

To Set system time zone $ timedatectl set-timezone <ZONE>

To Show this help options $ timedatectl --help

regards, T.Dhanasekar