I'd have to say somewhere between three and four thirty. Don't ask why I spelled those out. =l

When the people that wake up see you're still awake.

Or you see the sunrise.

Maybe after 5. Definitely after 6.

But I've stayed up to 4 or 5 before and never thought myself as "up early" unless I was pulling an all-nighter or really did wake up early.

-CF

4 AM

I have lots of experience in this matter too.

Yeah, I'm going to call 4:00 AM the cut off point since often by then you can see the faintest hints of dawn.

Well, between 4am and 5am, by the experience of this weekend ^^