How can I compare an ntp server's time to my server's time?
Solution 1:
ntpq -p ntp.ubuntu.com
From man ntpq:
...
-p Print a list of the peers known to the server as well as a summary of their state. This is equivalent to the peers interactive command.
...
Edit: The host is timing out right now. ntpq -p pool.ntp.org will return a valid result.
Solution 2:
You can use ntpdate to query a time server
ntpdate -q ntp.ubuntu.com