The office looked like a place where people keep odd hours.
They tend to be single or married to people who keep similar hours.
He just opened his own practice a few years ago and keeps long hours.
Dad's been starting to keep later hours so I see them both in the morning and that's it.
Try to keep regular hours, getting up at the same time however tired you may feel.
A man who kept late hours like that, he wouldn't see the sunrise very often.
A man of your age simply cannot keep such hours.
Maybe no one has put you on to the fact yet, but we don't keep bankers' hours in this business.
Another surprise, although his father often kept very odd hours.
You have been keeping pretty late hours and working unusually hard.