This article covers how you can easily adjust the time, date, and time zone of your system in CentOS 8.To change the time zone in Linux systems use the sudo timedatectl set-timezone command followed by the long name of the time zone you want to set.How to Synchronize Time on Installed Linux Operating Systems ?1. On the Linux machine, log in as root.2. Run the ntpdate -u command to update the machine clock. For example, ntpdate -u ntp-time.3. Open the /etc/ntp. conf file and add the NTP servers used in your environment.4. Run the service ntpd start command to start the NTP service and implement you configuration changes.Importance of man command in Linux:man command in Linux is used to display the user manual of any command that we can run on the terminal. It provides a detailed view of the command which includes NAME, SYNOPSIS, DESCRIPTION, OPTIONS, EXIT STATUS, RETURN VALUES, ERRORS, FILES, VERSIONS, EXAMPLES, AUTHORS.