Ref: https://www.vpnttg.com/installation/virtualbox
List the Timezone
$ timedatectl list-timezones
Set the Timezone (e.g., Asia/Bangkok)
$ sudo timedatectl set-timezone Asia/Bangkok
Verify new setting by the following two commands,
- date command: show date and current time
$ date - ls -l /etc/localtime command: show Timezone info
$ ls -l /ect/localtime
If not recognized command timedatectl, may need to install dbus
$ sudo apt-get install dbus