I tend to fall asleep no matter where I am at about 10-10:30pm. Sometimes I can stay awake but it gets hard. Now, I have been waking up anywhere from 2am to 5am. With no alarm clock, I just wake up. I used to get woken up by the dog before she died so I haven't used an alarm clock in years. This morning I did sleep in, I slept until 6am.
Now, I would love to stay up to 11ish and wake up at 6am. That would be nice.