download url: http://www.monitoringexchange.org/inventory/Check-Plugins/Operating-Systems/Novell/eDirectory-Time-Check
This is a check script which runs ndsrepair on an OES (linux) server and alerts if the time is out of sync from eDirectory's point of view on any contactable servers. It also outputs a list of any servers that couldn't be contacted.
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.