Telephonic misconnections

I had the strangest phone conversation the other day. It was early evening, and I called my friend D up to wish her a happy birthday. She'd been out of town celebrating it with her family. (Names and phone numbers changed to protect the innocent.)

D: Hello?

Me: (Thinking her voice sounds a little strange) Hi, is D there?

D: Speaking.

Me: Oh hi D. It's Paul. I just called to wish you a happy birthday!

D: Thanks!

Me: How was the celebration?

D: Oh, pretty good.

Me: And how was your visit home to your parents?

D: Huh? I didn't go home. We just stayed around here and hung out.

Me: You didn't? I thought you said you were when I saw you last week.

D: No, I stayed around the apartment. Wait, who is this?

Me: Paul.

D: Ummm, I don't know a Paul.

Me: Is this D. Smith?

D: No, this is D. Jones.

Me: Did I dial 555-1219?

D: No, you dialed 555-1216.

Me: Was your birthday yesterday?

D: No, it was Friday!

Me: The D I was calling had her birthday yesterday! What a weird coincidence!!

D: I'll say! I was really confused!

Me: Me too. Well, umm, D... happy birthday!

D: Thank you!

We both had a good laugh, and I apologized. Then I gave my D a call, carefully dialing the correct number. The real D and I had another good laugh as I told her the story of what just happened!