Season dependent night textures

Hi, is there a way to create night textures with show up only at certain times of the year? For example a standard night texture for days/nights 1 to 355 and a special Christmas texture for days/nights 356 to 365?

Been looking for that too… this is done using a second texture, emissive color setting and… (??)

It can be done… there is a (very) early topic about it in the Archives, maybe you understand what this “sepia mask” is all about …

I got lost…

We need a Tutorial. Please post some tips here, when you find something.

The trick is to put a Blender light source inside

I’m experimenting with transparent surfaces. I’ve not done real “windows” yet. You can also put light sources outside