instructions for daylight/sunlight animation

[vlado]

but...in real life, isn't there a difference between the sun/sky color of dusk and sunset?

Surprisingly enough, there isn't - given that other atmospheric parameters are the same. Often, though, you get different turbidity/ozone/water etc because of the weather. You'll have to adjust those manually, since they tend to vary a lot.

Best regards,
Vlado