该算法能够根据地球上任意位置计算其日出、日落时间，能够计算该地在指定时间的太阳高度角、方位角，能够计算日地距离、太阳位置等。-The algorithm can calculate the sunrise and sunset time according to any position on the earth. It can calculate the solar altitude angle and azimuth angle of the ground at the appointed time.