What is the URL of the timer server used by Ubuntu?
The settings page just shows the radio option "Automatically from Internet", but it does not show the actual server URL, like in WIndows.
Usually, ntp.ubuntu.com. This is supported by example preseed files and the value used by the server and network installation methods (for which, the debug output shows ntp.ubuntu.com as the value for the NTP server). To check the server status and time, you can run ntpdate in debug mode (to see if there are other problems), or in query mode (to just see the time):
ntpdate -d ntp.ubuntu.com # Debug mode
ntpdate -q ntp.ubuntu.com # Query mode
