Harry Potter shares J.K. Rowling’s 31 July birthday in the Harry Potter books.
Rowling was born on 31 July 1965, and Harry’s birthday is 31 July as well. The date is stated in the novels and became a widely recognized piece of Harry Potter trivia. Harry was born in 1980 within the chronology of the books, making him much younger than Rowling despite the shared calendar date.
Harry’s birthday is important in the story because the opening of Harry Potter and the Philosopher’s Stone takes place around his eleventh birthday. Hagrid arrives with news about Hogwarts and gives Harry a birthday cake, marking the beginning of his formal entry into the wizarding world.
The date is sometimes confused with the birthdays of other central characters. Ron Weasley’s birthday is 1 March, while Hermione Granger’s is 19 September. The shared date connects Rowling with her protagonist, but it does not mean Harry is an autobiographical version of her.