The App provides the following services for users：
1、 sunrise,sunset,magic hour,dusk ,dawn and the position of sun
2、moonrise,moonset,moonphase and position of moon,the visibility time of galactic center
3、trace moon's,sun's path by using AR
4、show postion,direction of moon and sun On map
1、Solar and Lunar Eclipse,Meteor shower,Planetary phenomenon.
2、Night AR for star trail.
3、Night sky photography setting (Exposure,Depth of field, Spot star and milk way,Star trail).