It varies for me. I'm pretty much normally a night owl but with the job I have and the kids, That has pretty much changed my sleeping habits.
During the weekdays, I'm up and about early in the morning and usually I don't go to bed until much later on. Some of the time during the weekends, I would stay up much later than I normally do for the weekdays.
This week, Lately, has been so bad that my sleeping hours has been out of whack trying to adjust to the Eastern Time Zone since I recently was out in the west. Also, a lot of things were going on that also didn't help me sleep that well either. In time, I hope that will downsize.