That is a beautiful model and I like how you have setup the shaders.
In each you would do something like this (this one is for the seconds hand):
var date = new Date();
var seconds = date.getSeconds();
transform['Rotation'] = new THREE.Vector3( seconds * 360 / 60, 0, 0 );
The issue is we only have a procedural for the PolyMesh node type, not the transform type. We will add this in the next week and then this will be possible.