International Harry Potter Day is celebrated on May 2nd each year, marking the anniversary of the Battle of Hogwarts, a significant event in the Harry Potter series by J.K. Rowling. This day honors the impact of the books and films on fans around the world, encouraging them to celebrate their love for the magical universe. Fans often participate in various activities, such as reading the books, watching the films, and attending themed events. Many also engage in discussions about their favorite characters, spells, and lessons from the series, fostering a sense of community among Harry Potter enthusiasts.