Today we can predict lunar/solar eclipses down to the precision of seconds.
But what was the precision like in medieval times? I imagine it must have improved over centuries. To keep the question very specific I'm looking for the precision in prediction of lunar eclipse around the time of Columbus. But if a broad overview of historical development can be given, it'd be very helpful.
Background: Christopher Columbus used the knowledge of an upcoming lunar eclipse to threaten the local tribes against his God's fury. I was wondering if they all knew exactly how long to wait for the event or they just knew the date on which it'd happen but not the precise time.