Maybe it's not the "late"; maybe it's you...
Come to think of it, I was up until 4:30am last night as well. My roomate and some friends were having a tequila fueled Kid Rock sing-a-thon. You can't sleep through that.
I can still hear "I'm a mother fucking cowboy" in my head. Make it stop. Please.
What's the big deal with daytime anyway?