This is not great, but it's a start:
Code:
/midnight.env original parameters:
/skyfog 50 50 50
/fog 55 55 55
/cloud 56 56 56
/sun 15 15 15
/sky 0 0 0
/ground 10 10 17
/ceiling 21 21 21
/floor 11 11 11
if past 9 and never then
colorfade 3600 /1 hour (60 sec. × 60 min. = 3600)
sunfade 100 600 / Sun or moon graphic fades 100% in 10 minutes
skyfog 100 100 100
fog 110 110 110
cloud 112 112 112
sun 0 0 0
sky 20 20 34
ground 10 10 17
ceiling 21 21 21
floor 11 11 11
endif
I have a thing for day-night cycles in DFBHD .wacs