Thanks. After some experiments it certainly looks as if the rendering considers equation of time.

..more complicated in SH3D, I try to use the sunlight the same way, so I often shift the date and time to change the colour and height of the sunlight...

And you make it work nicely for your renderings. But for me it would only be confusing if I could shift the sun at random, so I am happy it is 'complicated' to 'cheat'.

Anyone coming across this thread and reading about the sky texture alignment, should also know that SH3D 6 (beta 7) introduces X offset for the sky texture so it can be rotated.

ok