About 11 hours a day, since summer vacation started. It makes it better, staying up late and sleeping in, apposed to going to bed early and waking up at 7:30 like I did while school was still going.
Its fun waking up at random times from 12 to 4 PM.
Anyways, staying up 6 hours a day is a huge waste of summer vacation time, imo. I'd rather spend as much time as I can awake before school comes back even harder than before. Unless you enjoy being asleep more.