I feel like a dunce, but cannot figure out why all of a sudden iCloud is not syncing some appointments between my iphone5 and my iPad mini. Can someone help me out? I've tried everything I can think of. Thanks.

1) Go to iCloud.com on a computer and see if the problem appointments are getting synced there.

If they are, then under Settings > iCloud turn off the Calendar on the device that is not getting the appointments. Let it delete the calendars locally. Open Calendars to force the database clean, then turn the Calendar back on.