The hands of clock are right on top of each other at high noon. That much is obvious. But when are the other times that the minute and hour hand line up exactly? If you think about it, it's pretty ...

We see a lot of clocks here on Hackaday. Some make it easy to tell the time, others are more cryptic. [dragonator] has done something that is so simple, we are surprised it isn’t more common. In a ...