计算日出日落时间，太阳偏差角度，正午时间的编程工具-caculate the time of sunset and sunrise

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

CSharp 开发的能够方便地获得设定经纬度的太阳高低角、方位角、日出日落时间的计算类(a Csharp Class File that can Calculate Sun Azimuth ,sunrise time ,sunset time by latitude,longitude,time)