When did they meet last?

W: Hi, Fred. It’s five months since we met last time.
M: Yes, it’s a long time. I went to the south and stayed there for two months.

W: Some friends are having a party for me tonight. Do you want to come?
M: Very much. What time?
W: About 8:00.
M: I’ll be at your house at about 7:30.