Welcome back to the forums.
Time sync seems to be quite popular, I think this is the second hit in a week.
Learn more here: http://community.centrify.com/t5/Centrify-Express/AD-Time-sync/m-p/29057#M10593
(basically, by default all Centrified systems will sync with AD domain controllers, you can change that behavior)
To answer your question, you can use adcheck --test ad [domain name] and one of the tests that will be performed will be a time sync.
$ /usr/share/centrifydc/bin/adcheck --test ad corp.contoso.com | grep TIME TIME : Check clock synchronization : Pass
You could also use adinfo --diag to get a lot of info too.
If you want to get more useful commands, check this out.
R.P