Greetings, I ran across a really cool PostScript program that's a dodecahedron desk calender, at least it is once you cut it out and glue it together. It's a really fun thing, if you like that sort of thing. I put a year 2000 version at jh.portland.co.uk/deskcal.ps
I also wrote a PostScript analemmatic dial program. It's on the list at axum.tripod.com Regarding patents, I also once designed a sundial which I believe is patentable. I'm glad that I took the advice I was given here on this mailing list to not pursue a patent. Gladly making sundials, John
