keep late hours

Idioms  

1. Stay awake until late at night. For example, Never call Ethel before noon; she keeps late hours and sleeps all morning.

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Example Sentences

Coaches commonly keep late hours but not so much in the off-season months, like March.

From New York Times • Nov. 10, 2011

Galleries keep late hours for First Friday, which is a monthly artistic open house.

From Time Magazine Archive

We keep late hours at the house, whereas an athlete ought to retire early and arise with the sun.

From Going Some by Beach, Rex Ellingwood

I fear my ward is learning to keep late hours.

From Infelice by Evans, Augusta J. (Augusta Jane)

Did not Jesus know that my studies were not so pressing but that I could keep late hours, sometimes several nights in the week, at parties?

From Stories Worth Rereading by Various