However, there are several unofficial celebrations throughout the year that Harry Potter fans enjoy:
* July 31st: This is Harry Potter's birthday, and many fans celebrate it as a "Harry Potter Day."
* "Harry Potter at Hogwarts" (formerly "Harry Potter: A History of Magic"): This is an annual exhibition held at the British Library in London, showcasing the history of magic and witchcraft. It usually takes place in the fall.
* "Harry Potter Fan Festivals": These are fan-organized events that often feature cosplay, trivia, games, and other activities.
* "Harry Potter Book Night": This is an annual event organized by Scholastic, the publisher of the Harry Potter books in the US. It usually takes place in February.
So, while there's no official "Harry Potter Day" or "Harry Potter Week," there are plenty of opportunities for fans to celebrate the magical world throughout the year!