[oopic] Re: Providing a clock/time to the PIC

Wikipedia has a couple of equations for the declination of the Sun
http://en.wikipedia.org/wiki/Declination

You also need the Greenwich Hour Angle

There is a pretty decent explanation here:
http://answers.google.com/answers/threadview?id=782886

Unless you use a coprocessor, you can't do the calculation with the
OOPic. A table lookup is good but, with a coprocessor, calculation
shouldn't take too long.

Richard

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