call it a day

[call it a day] {v. phr.} To declare that a given day's work has been accomplished and go home; to quit for the day.

"Let's call it a day," the boss said, "and go out for a drink."

It was nearly midnight, so Mrs. Byron decided to call it a day, and left the party, and went home.

The four golfers played nine holes and then called it a day.

Compare: CLOSE UP SHOP.