Material Problem

Good day! I just wanna ask about materials on characters. The problem is I wanna have a fix material settings on my character where in I would not adjust it anymore wether it is in Day scene or Night scene.
You see when my character is in day time the materials are ok but when I put it in a night scene the materials will be dark. Thank you in advance.

Can you post some screenshots from both lighting situations and the material setup please?

YO man, I am a beginner. But did you mean, you are not updating sun direction and refreshing the sky material? Maebe this helps.