From Anonymous on 2016/04/03 09:20:02 +0000
Set “time to nap” notification, based on wake up time and calculated best time to nap with Interactive Nap Wheel (source: http://lifehacker.com/5874738/calculate-the-best-time-to-nap-with-this-interactive-nap-wheel)
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/13291890--time-to-nap-notification