Is anyone aware of any way to make HDR skyboxes dynamic? ie change depending on time of day?
There’s a custom shader on the Unify Wiki
http://wiki.unity3d.com/index.php/SkyboxBlended
You can blend from one Skybox to another using your own TimeOfDay function (i.e dawn to morning, morning to afternoon, etc.); you can even have multiple Skyboxes defined for different weather events too and set those in your scripts.
I don’t know if HDR has unique impediments to that.