Damia Soler created this cool Paper Sundial Creator, at first I thought it was just a template you could print, cut and stick. I could not have been more wrong, this paper sundial is full of tech. You use this sundial creator web page to find the building that the sundial will be mounted to, then based on your time zone it plots a custom Sundial for your exact location!

“Sundials are instruments that tell you the time with the shadow of the sun. To design a sundial you need to know exactly where you are going to put it, i.e. you need to know the longitude, the latitude and the orientation of the wall with respect to North. “