Depends what's on the goggle box. Usually try to be in bed by 11 though to try and get a good 8 hours kip. Really not a fan of getting out of bed and happily would sleep for 12+ hours, strangely though if golf is the next day I have no issue getting up.
When I was working it was usually 11.00ish-11.30 unless I was gaming or busy. Now I am of leisure its usually 1am unless the next day is a golf day then its promptly to bed at 11pm again and it will be earlier as the mornings get lighter.
I had to get up in the morning at ten o'clock at night half an hour before I went to bed, drink a cup of sulphuric acid, work twenty-nine hours a day down mill, and pay mill owner for permission to come to work, and when we got home, our Dad and our mother would kill us and dance about on our graves singing Hallelujah.
Somewhere between 1am and 6am. But I work nights so I don't have much choice really. My big problem is that I generally have to make do with between 3 and 6 hours sleep per night. It's why I look 20 years older than I am.
Depends, anytime between 23:00hrs and stupid o'clock in the morning. If I'm watching a film or I've hit PC time while gaming it can be around 01:00hrs, if I'm working then it can be as late or early as 04:00hrs.
I do not generally need a lot of sleep, as JBJ sings, "I'll sleep when i'm dead"