Very Useful For Airplane Pilots

Pilots in the u.S.A. need keep track of 3 types of "night", all relative to current location. This app takes out the guesswork and makes it easy. It has a dynamic, clear display of much information, works well, and the developers are maintaining it. Its not perfect, but the 1/2 star of warts arent enough to push it down to 4 stars. Wishing all apps were this simple, effective, and current.

Lagmanbek about Sol: Sun Clock