Wow, I am the only morning person so far...I am usually, 'up and at 'em' within 5 -10 minutes of waking. On the flip side, even if I stay up late, I lose focus by about 10 and it takes me awhile to fall asleep.
My husband is a night person, he usually stays up until 12 or 1, alert and awake the whole time. He falls asleep the moment his head hits the pillow...but he takes along time to wake up. He gets up anywhere between 6-8 and heads to work...but when he calls me around 10:30 to say, 'good morning', that's when I know he is awake.