History Trivia / HarryPotterAndTheOrderOfThePhoenix

* AnachronismStew: When Harry and Arthur Weasley are travelling to the Ministry of Magic meeting, they are in a tube station, with passengers passing through the ticket gates using Oyster cards[[note]]a smart card that can be preloaded with funds for travelling around London's public transport systems[[/note]]. J. K. Rowling has gone on record as saying that Harry Potter was born in 1980, therefore meaning the book was set in 1995/96. Oyster cards weren't introduced until 2003. However, all the films tended to subtly update the setting to the time of shooting, with the first film even featuring 2001 on a newspaper.

* WhatCouldHaveBeen: See [[WhatCouldHaveBeen/HarryPotterAndTheOrderOfThePhoenix page]].

* TheOtherMarty: Creator/HelenMcCrory was originally cast as Bellatrix but had to drop out due to becoming pregnant, [[CastTheRunnerUp so she ended up playing Bellatrix's sister Narcissa]] in the next three films once her maternity leave was over.

* TheOtherMarty: Creator/HelenMcCrory was originally cast as Bellatrix but had to drop out due to becoming pregnant, [[CastTheRunnerUp so she instead played Bellatrix's sister Narcissa]] in the next three films.

* AccidentallyCorrectWriting: [[https://www.dailydot.com/irl/rowling-harry-potter-gender-identity-tweet-thread/ A Twitter thread]] observed that the "Battle of the Seven Potters" sequence inexplicably manages to display a better grasp of gender identity and pronoun preference than its now-infamously transphobic author. Hermione, a cisgender female, takes Polyjuice Potion to transform into Harry, and given that she complains about such details as getting Harry's terrible eyesight, we have no reason to believe her genitals didn't also change for the duration. Nevertheless, Harry's InternalMonologue continues to correctly refer to her in the feminine, as her gender identity didn't change even though her physical sex presumably did.

* AnachronismStew: When Harry and Arthur Weasley are travelling to the Ministry of Magic meeting, they are in a tube station, with passengers passing through the ticket gates using Oyster cards[[note]]a smart card that can be preloaded with funds for travelling around London's public transport systems[[/note]]. J. K. Rowling has gone on record as saying that Harry Potter was born in 1980, therefore meaning the film was set in 1995/96. Oyster cards weren't introduced until 2003.