Moonless Sky Calendar?
Posted 27 July 2013 - 12:14 PM
Posted 29 July 2013 - 12:33 AM
Adjust settings for your location. I like how it displays the black squares, which are the hours I believe you are looking for. There is a lot of data there, but read through the notes below the calendar to make sense of it.
Posted 03 August 2013 - 11:11 AM
It greatly opens up the number of observing nights, too!
Posted 03 August 2013 - 12:31 PM