It really makes a difference. Photograph something at midday and compare it to a picture taken at sunset or sunrise.
These are both pictures of Keck 2 with the Haleakala volcano on Maui in the background. The former was taken during a little time off I had while watching our telescope being taken apart in the middle of the day, the latter while I was up observing earlier in the month and took a few minutes from work to take in the sunset.
What I really want to know, though, is what's that brown stain on the Keck 2 dome in the first picture. Maybe it's not visible in sunset shots and has been there forever, but I haven't seen it before - daytime or at sunset.