Moon phase (moonrise, moonset)
I have a suggestion for another helpful feature. We hiked a lot in December and often came into the night. In addition to the very helpful information about sunrise and sunset, you could include the moonrise and the moonset including the moon phase (1 - 0,75 - 0,5 - 0,25 - 0). In a "cloudless" night that can be an importent and helpful piece of information.
Best regards, great software :-)