On weeknights I usually go to bed at 10. Sometimes it varies from 9-11 though. If I'm really tired I just go to bed and read or play DS until I fall asleep.

On weekends I might stay up a bit but not usually past 12 unless I'm doing something particular. Is much rather get up early than wake up past 10 and feel like I've wasted the whole day D:

I'm definitely not a night owl. In Winter when it gets dark at early I sometimes go to bed at 8 xD