The Network Time Protocol (NTP) is a protocol used to synchronize computer system clock automatically over a networks. The machine can have the system clock use Coordinated Universal Time (UTC) rather than local time.

The most common method to sync system time over a network in Linux desktops or servers is by executing the ntpdate command which can set your system time from an NTP time server. In this case, the ntpd daemon must be stopped on the machine where the ntpdate command is issued.

In most Linux systems, the ntpdate command is not installed by default. To install it, execute the below command:

$ sudo apt-get install ntpdate    [On Debian/Ubuntu]
$ sudo yum  install ntpdate       [On CentOS/RHEL]
$ sudo dnf install ntpdate        [On Fedora 22+]

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