Harry Potter's Birthday is celebrated worldwide every July 31. This date marks the fictional birth of Harry James Potter, who was born in 1980 to James and Lily Potter. According to the story by J.K. Rowling, Harry's life took a dramatic turn when his parents were killed by Lord Voldemort three months after his birth, leaving him to grow up with his aunt's family. The celebration gained popularity as fans of the book series, which is one of the most famous contemporary bestsellers, organize themed parties and events to honor the young wizard. Activities often include re-reading the books or watching the film adaptations, allowing both children and adults to immerse themselves in the magical world.