A man receives a phone call from his doctor

The doctor says: "I have some good news and some bad news."
The man says: "OK, give me the good news first."
The doctor says: "The good news is, you have 24 hours to live."
The man replies: "Oh no! If that's the good news, then what's the bad news?"
The doctor says: "The bad news is, I forgot to call you yesterday."