A canon event refers to an occurrence or storyline within a fictional universe, such as in literature, film, or a franchise like Star Wars or Harry Potter, that is officially recognized as part of the established and accepted narrative.
Canon events are considered integral to the overarching story and are consistent with the rules, characters, and history of the fictional world.
They serve as reference points for fans, writers, and creators when discussing or creating new content within that universe, ensuring continuity and coherence in the storytelling.