Mobile Observatory is a fairly complete implementation of astronomy information from the passage of a comet to the date of the next eclipse and how to locate stars and constellations.
Functions:
Shows a map with stars, planets and asteroids; shows information about the solar system, celestial events, eclipses, comets, etc., provides access to a catalog with detailed information on more than 9,000 stars, and 3D images of the moon and planets.
Activities:
You can configure a widget on the home screen that displays the Sun's and Moon's rising and setting times.
Controls:
The interface is intuitive and access to information is through a very well-organized menu.