I have these Objects around a Circle.  
I want to have every object rotate around his local Z axis by 6.6 degrees more then the previous 
object:

I thought Animation Nodes is a good way of dealing with this, but there is less information than I thought.

So first things first, how do I get the Objects to rotate around there local Z - at the moment 
everything is rotating globally and I dont get it to behave anyhow differently...

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/AlPZv.jpg