From Alexander Semenov on 2015/04/01 07:28:35 +0000
(good for people who work 24 hours every 3 days and have a schedule)
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/7405396-alarm-schedule-that-wakes-you-up-every-third-or-ev