Where does the conversation most probably take place?

F: What time is it? Your Dad should have come back.
M1: It’s half past six.
M2: I’m home! Sorry for being late. I met a friend and had a nice talk and just forgot the time.
F: We are waiting for you to discuss the party.
M1: Mom suggests the 10th. What do you think?
M2: Wait a minute. What’s the date today?
F: It’s the 5th, Mr. Poor Memory.
M2: 5 days from now. Oh, no, I’ll be tied up next week.