[erutuon]

Interesting! That's similar to a clock that my brother and I made years ago (http://naturalclock.net). Ours adds the altitude of the sun throughout the day and lets you select the location and fast forward and rewind time to see how the sun's path changes throughout the year. I came up with the basic concept and my brother drastically improved the graphics and added the map and retrieval of time zones. Unfortunately no documentation and no HTTPS. I don't know how accurate it is. As I recall we based the equations for the sun on a solar cell-related website.

It's cool that the Sun Clock has the moon phases and that the sun (according to another comment) goes the correct way in the Southern Hemisphere. I kind of wanted to add the moon but hadn't thought about the position of the sun.