Weekdays and days when I have a planned morning commitment: About 30 minutes before I need to be out the door (so not counting travel time). If it's something that requires more prep, or that I'm especially nervous about (interview, exam, etc.), I'll wake up earlier.
Weekends/days when I do not have a planned morning commitment: It really depends. If I don't use my alarm clock, I wake up anywhere between 10:30 am and 3 pm or so, depending on how sleep-deprived I am. I generally set my alarm clocks for somewhere in the 11-12 range to try to make myself get up, but if I have a lazy day off with nothing to do, I'll sleep significantly later.
I'm a night owl facing the persistent struggle of adapting to a morning person's world. I've tried the get-up-at-the-same-time-every-day routine, but I've never been able to maintain it for more than a few days (nor have I been able to shift when I get tired much earlier--I can fall asleep early if I'm really exhausted, but I generally have difficulty falling asleep until fairly late, even when I am quite tired). Six years of getting up at 6 am never did much for my biological clock. I guess it's a bit better than it was when I was a teenager, and I make it work, but unless I'm excited about whatever I'm getting up for, mornings are a struggle and make me feel queasy.
