SnoozeMaster

SnoozeMaster is a menu-bar utility that allows you to have more control over snoozing your Calendar or Reminders alerts.

You can change snoozes to last for 1 minute, 2 hours, 3 days, you name it - SnoozeMaster gives you that ability. Pick one off the menu or create a quick Custom alert. Features A user definable snooze list. On-the-fly setting of the snooze duration. View button to open up the event in the Calendar or Reminders apps.
You can snooze: from now before event start before event end after event start after event end
The duration can be: Minutes Hours Days