Sync Clock Via NTP
If you want to sync your clock with NTP servers, it is also very easy. Just make sure you have the file ntp.conf file in /etc. How can you check it?
If you see /etc/ntp.conf as a result, you already have that file. If the ls command gives an error, you do not have it. If so, you may create it yourself.
sudo gedit /etc/ntp.conf
This file will be used to automatic synchronization of the clock. I do not know if the client uses this file automatically or one has to configure something first.
Whether you have the file already or not, make sure it has at least the following data
Here you may replace, add, and/or remove any servers you wish. You will find a list of time servers from the public NTP time server list.
You may manually sync the clock using the following
sudo ntpdate servername
where servername can be any public or private time server. You may always choose the following without hesitation
sudo ntpdate pool.ntp.org