I've had it. Let's call it a day.

我受够了。我们今天就到这里吧。

《柯林斯英汉双解大词典》

Very well. Let's call it a day.

很好，今天我们就到此为止吧！

youdao

Then, let's call it a day.

那么，我们今天就到这儿。

youdao

Let's call it a day and go home.

今天到此为止吧，大家回家吧。

Let's 课堂 - SpeakingMax英语口语达人

"It's not just put females in combat (specialities) and let's call it a day, " she said.

CNN: Former troops say time has come for women in combat units