This form appears to remind you of an upcoming calendar event or task. Starts at The event or task start time. Duration How long the event is scheduled to last, or the time between the task's start and due dates. Ends at/Due at The event's end time or task's due date. Time zone The time zone in which the event or task was created. Location Where the event will take place. Snooze How long to wait before showing this reminder again. Only specify a time if you want to be reminded a second time. Choose a time or type your own. If you choose a time, you can either choose the time between this appearance of the reminder and when you want to see it again, or the time before the start time at which you want the reminder to reappear. Details button Opens the event or task. Snooze button Closes the reminder and reopens it at the time you specified at "Snooze". Dismiss button Closes the reminder and doesn't show it again. For more information Calendar reminders