Sun Clock

A note about direction In the Northern Hemisphere the Sun moves across the sky in a clockwise direction. (Before clocks, clockwise was called "sunwise", and anti-clockwise was know as "widdershins", meaning "against the way".) In the Southern Hemisphere, however, the sun moves across the sky in an anti-clockwise direction. Sun Clock matches this by setting its direction of rotation based on your latitude: if you're in the Southern Hemisphere the clock will go 'backwards'. You can change it in the settings if you wish. Ideally you want the clock to turn in the same direction as the sun, regardless of which hemisphere you are in. If you are facing South, set it to clockwise; if facing North, anti-clockwise. You want sunrise on the clock to be to the East. In fact, if you face the right direction and tilt you screen at the right angle, the hour hand will track the movement of the Sun across the sky. Exactly how to do this is left as an exercise for the reader, but you want the screen to lie in the plane of the ecliptic, and solar noon to be "up".