Controlling smooth analog rotation

I have a clock that I've made where I'm trying to make it possible to use a dual analog controller to smoothly rotate both hands to any position around the circle. I can get it to point the hands in one of eight directions (basically north, south, east, west and the ones halfway between each of those) but am stumped trying to figure out how to get the hands to point in the same direction the analog stick is going. Thanks!