I start at 07:30 6 days a week (sometimes even Sunday but not through the entire day), and don't usually finish 'till late that day. It catches up with me, my health is a disaster, coffee for breakfast - lunch - 'till 18:00 (never drink coffee after 6pm) and my cups are huge (the size of the Eiffel Tower) + smoking (bad for me but can not seem to be able to cut them down).
Sometimes join the day, I need to get out to clear my head so I go on a drive for an hour or two.
After 6pm if I don't work, I grab a book and flick through it (of course programming related) in front of the television or I help my kids with the xBox games.
That's the down side of running your own business - long hours and the risk of killing yourself slowly and surely.
Last week my family went to Wexford - Courtown, and I have been working till late (11-12 pm), and indeed I got a lot done, but... not good for me (health wise).
Now you do the maths and see how many hours is that per/week.