Fun detail; Deus Ex has ONLY nighttime, it's never daylight in it, ever.
Man, it HAS been a while. I think you're right. Except for that sunrise, of course.
Day/night cycles can't be that important if you can't even remember if a game has them or not
Oh, stop.
I also played that game back when I had time to play every game I could put my hands on. Plus, as a FPS with RPG elements, it's easier to get away with having no day/night cycle. I clearly should not have included it in the first place.
And there's a reason(s) why I still remember Ultima VII so fondly, and the combat ain't it.