Hello:
I need to write a spreadsheet to find the sun position. I know there
are already many programs that do this. However, I need to write one
myself because:
1. I'll learn as I write
2. It will give the sun position in the format that I need
3. I can tweak the spreadsheet to give the same answer but in another
format.
My question is, where do I start?
I recommend you these wikipedia pages:
http://en.wikipedia.org/wiki/Solar_azimuth_angle
http://en.wikipedia.org/wiki/Solar_elevation_angle
For sundials formular I alse recomend
http://en.wikipedia.org/wiki/Sundial
Best regards
Damià
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