- Import or create three circles solid-color layers. Let's assume one of them works like an hour hand, the other one as the minute hand, and the third as the seconds hand. (See Solid-color layers and solid-color footage items.)
- Set the anchor points at the ends of the layers. (See Layer anchor points.)
- Move the layers so that the anchor points are at the center of the composition. (See Move layers in space.)
- Set Rotation keyframes for the hour hand. (See Set or add keyframes). Select the Rotation property for the minute hand and choose Animation > Add Expression.
- Drag the pick whip to the Rotation property for the biggest circle. The following expression appears: thisComp.layer("circle").rotation.
- To make the second circle rotate 12 times as fast as the first one, add *12 at the end of the expression as follows: thisComp.layer("circle").rotation*12.
- Repeat the same with the third circle and add *24 at the end of the expression: thisComp.layer("circle").rotation*24.