A PoE Clock obtains UTC time from an NTP server during each check-in and then synchronizes the received UTC time to its assigned time zone. By default, all clocks are set to the NTP servers set in the account settings. If all clocks will use the same NTP servers, it's recommended to update the NTP account server settings (go to Admin > select your account name).
Go to Devices > Clocks.
If you need to update more than one clock, be sure to use the multi-edit feature. From the list, select all of the clocks to update and then select Edit Selected. You can then apply an NTP server update for all of the selected clocks.
From the list, select the Gateway ID link of the clock. Its gateway profile is displayed.
Select Show Advanced Options.
From the NTP Servers (1-3), enter the domain name for each NTP server.
Its Update Pending status is set to Yes and the setting change is scheduled to be downloaded to the device during its next check-in to OneVue.