System : System > Time

NTP Settings
Network Time Protocol (NTP) is a protocol used to synchronize computer clock times in a network of computers. NTP uses Coordinated Universal Time (UTC) to synchronize computer clock times to a millisecond, and sometimes, to a fraction of a millisecond.
Select Use NTP to set time automatically if you want to use your local server to set the firewall clock. You can also configure Update Interval (minutes) for the NTP server to update the firewall. The default value is 60 minutes.
To add an NTP server to the firewall configuration
1
Click Add. The Add NTP Server dialog displays.
2
3
Click OK. The NTP Server section shows the server.
To delete an NTP server, highlight the IP address and click its Delete icon. Or, click Delete All to delete all servers.