Calendar/Alarm snooze time

[WMFan85]

Is there a way to change the snooze time for the calendar or the alarm? I find it quite annoying that I can't snooze my calendar items longer then 5 minutes. I know that there are different alarm clock apps for the alarm, but I haven't found anything that doesn't have to have the phone on or you have to make sure you open the app before you go to bed.

Thanks for your help ahead of time.