SunPosition Calculator calculates the Sun's postion based on the location and time. What is the equation used for such a calculation?
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This function http://www.astro.washington.edu/docs/idl/cgi-bin/getpro/library28.html?ZENSUN is written in IDL, a programming language popular in the astronomy community. Although IDL is commercial software, the GNU Data Language is intended to be compatible and may help you work through the calculation if you want to port it to a different language. |
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