Need help with Cosmic Night Sky

[samroski]

I recently released Cosmic Night Sky which is a texture replacer for skynebula01.dds (residing in Oblivion/Data/Textures/Sky generally). The mod has currently 38 options for the night sky- and I am working on refining these and adding many more (especially some composite images of smaller nebulae/galaxies).

 

What I would like to do is to get these textures to cycle on a nightly basis (or every 2nd night- as by default the texture moves 90 degrees on alternate nights)- have possibly 60 textures to cycle through. This would save users from changing the textures, and add that unexpected "wow" factor.

 

I think this is going to need scripting, but unfortunately I have absolutely no clue how to go about doing it. Any assistance would be greatly appreciated.