Moon Rise - Set Calculator

Hi Guys,
This Moonrise/Moonset Calculator is based on an old BASIC program that has been floating about the net for years.
All I know is that it was printed in an old astronomy magazine, and it works. It is available on the net here:
http://www.schoepski.com/states/illi...e/moonrise.htm
and that is the original program that I have translated for Commodore 64 BASIC to produce this C64 program file.
http://img.photobucket.com/albums/v1...reenshot-1.jpg
It's ready to run on the PSPVice emulator for the Sony Playstation Portable.
PSP Vice for the PSP can be downloaded here:
http://perso.numericable.fr/~ckckck/C64_PSPVice.html

All testing with this program was done with PSPVice version 1.2 (Jan '08) as is the current version available from the website.

At some stage, I will probably port this to C, and include it into my Time Baby Clock program.
Look out for Time Baby V9b. It corrects a moon phase calc bug.

Oh yeah, I forgot to mention, if you want the source code, just type LIST once it's finished running!:D
Cheers, Art.