Antikythera: Calculate the phase of the moon!

Rayman

Here's a little app that I wrote for my wristwatch a few years ago and just ported to SPIN...

I was inspired when more details of the Antikythera mechanism were discovered a few years ago:
http://en.wikipedia.org/wiki/Antikythera_mechanism

Anyway, just give it the date your interested in, and this program will calculate the phase of the moon in a similar way to the Antikythera mechanism.
It's accurate to 1 day in 500 years.

No floating point here, this is integer math.

Humanoido

Will you add the MIT License notice so we can utilize the code with our astronomy apps? Thanks.

Rayman

Sure, I think I can do that...