This is a Twenty Four Hour Clock. The point of it is to get rid of those pesky AM's and PM's so you'll never get confused or be late. It works just like a regular clock except the Hour hand moves half as fast as a regular clock's would. The clock has a sprocket for each hand which is rotating at the same rate as the hand. Also there's one in the middle because it looks nice. It's currently running as if one call to update was a second because the movement of all the parts are more evident this way. There is another version of this clock where it runs at about real time here. TwentyFourHourClock.java Matrix2D.java