I’ve been hard at work the past few hours to get a neat looking day/night animation with cycles.
i have used a sun, another sun(moon), and AO + Env. Lighting using the excellent cycles sky world texture.
here is a test render of apart of the day cycle, 2:00 I think, took about 10 min. on CPU at 8 bounces with 750 passes.
check out the high res:
night cycle image will be coming soon.