Install Plug-in Extension from Software Center
Clock Override
The only weird part, you can only get to the extension settings by searching for it in the software center.
Use the following for YYYY-MM-DD HH:MM
%F %H:%M
Update Date and Time of Server
Refer: https://askubuntu.com/questions/81293/what-is-the-command-to-update-time-and-date-from-internet
$ sudo date -s "$(wget -qSO- --max-redirect=0 google.com 2>&1 | grep Date: | cut -d' ' -f5-8)Z"