12月21日的SunGraph应用程序分析

SunGraph is a sunrise and sunset calculator showing sunrise and sunset times for anywhere in the world and for any day of the year. For any latitude the earliest and latest sunrise and sunset times will be displayed. The analemma screen displays the equation of time along with the inclination of the sun above the horizon at transit. A world view shows the location of the sun on the Earth for the current time, or any day of the year. A data base can store user locations.