Sunset (or the lack of it)

When I change the time of day in Caelum I don't see the effect I am expecting. First of all, over a time range spanning 24 hours the sun rises and sets in the same location, not rising in the east and setting in the west. I also never get true darkness. The sun sphere goes below the horizon but the glow in the sky never disappears. This may be related to my other issue about not being able to load settings from script files, but I have duplicated the settings in code.

Thanks...M