你是星期一去看望安吉的，对不对？

It was Monday you went to see Angie, right?

《牛津词典》

我真难以相信你星期六还得上班，我以为你是星期一到星期五上班呢。

M: Usually, I do only have to work from Monday through Friday.

youdao

“就是那个时候你不舒服，是吗？”——“是的，就是一周前的星期一。”

"That's the time you weren't well, wasn't it?"—"Yes, that's right, that was a week ago last Monday."

《柯林斯英汉双解大词典》