The 'Blue Hour' is well known and popular with photographers and is used to take beautiful photos in the morning or to make twilight. The sun has already set or has not yet risen and the sky has the same brightness as the buildings. Depending on your GPS coordinates, this app shows you when exactly this time is in the morning and in the evening.

features:
-Views: blue hour, sun, moon
-Very accurate, minute-exact calculation on server
-Morning and dusk
-During the blue hour, in the morning, in the evening
-Sunrise / sunset, daylength
-Moondown / sunset, phase
-Monthview

System:
-Please allow access to GPS or your location.
-Internet connection required