Since my earliest class this semester isn't until 10:30 in the morning on Tuesdays and Thursdays, my only class on Mondays and Wednesdays isn't until 4:30pm, and I don't have any classes on Friday. I decide to go to bed when ever I feel like it.
It also depends on if I have been procrastinating a paper or assignment. My bedtime is in between 1am and 5am, whenever I feel I can't keep my eyes open, I fall asleep.
I do 4 page papers in under 3 hours the day they are due. On those days which are usually Tuesdays and Thursdays, I go to bed at 1am or 2am and get up at 7am to do the paper. So far my grades on papers have been as follows, A-, B+, C, A, also woke up at 6am took 4 hours to do a 6 page take home midterm and got a B+ on that. I don't know why I just talked about my grades, I go on tangents when I am tired. But it doesn't matter my 10:30 class for this coming day was canceled, so I don't have class until 1:30pm.