SkyORB is more than a simple star map, it's a collection of 7 tools including a 3D star map, 3D planetarium, ephemeris, search engine, sun clock, weather, and more.
SkyORB allows you to fine tune your observation location (and orientation with digital compass if available) with automatic detection from GPS (or entering the longitude, latitude and altitude).
Information like sunset and sunrise are computed as well as moonrise and moonset and full / new moon dates and current weather conditions.

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