Original Question
I followed a tutorial for a day&night cycle - working great. By additionally also changing the brightness… still got a major question:
Where’s that illumination of the character coming from? I really want to have a dark night and not a character that looks like being hit by small spotlights 
I tried several things, some probably absolutely useless due to a lack of knowledge (still a big rookie).
Thanks in advance for any hint.
Found the issues
Basically just wrong tutorial values regarding the rotation of the directional light and the lack of light blocking through ground.