M: I borrowed it on Monday. 13. It doesn't matter.
Woman: What? Isn't the library closed on Monday?
M: Yes. But I went on a business trip three days ago. . .
W: Yes, you said you needed it for a business trip, so you went to the library in a hurry the day before.
Man: Ah, that's right. The return date has passed, so we must return it as soon as possible.