If I neglect to wish you a “Happy Birthday” until a day or two later, it is my greeting that is belated. Your birthday connotes the date on which you were born, not the day on which I acknowledge this.
Yet one sees the phrase “Happy Belated Birthday” often. (Too often for me.) Most people probably know it is the good wishes that are belated, not the birthday itself, despite the ubiquitous appearance of the misplaced modifier.
No, you do not and cannot change the date of someone’s birthday by being late with your celebration of it.
I am not, however, saying that a birthday cannot be belated. Let me share an example close to my heart.
Ten years ago, we were anticipating the birth of our first granddaughter. There seemed to a good chance she would be a very special Valentine for all of us. When that didn’t happen, I was fine with having her be a very, very special birthday present for me two days later. Then, well, OK, for her mother’s birthday on the 20th. But no. She was finally born on the 25th.
Now that was a belated birthday.
