19 December is the 353rd day of the year (354th in leap years) in the Gregorian calendar. There are 12 days remaining until the end of the year.
- 1993: End of the term; the Hogwarts Express takes some students to London. Harry Potter receives a note from Rubeus Hagrid, informing him that Buckbeak's hearing is scheduled for 20 April.
- 1995: Harry Potter and the Weasleys visit Arthur Weasley at St Mungo's Hospital for Magical Maladies and Injuries. There, they eavesdrop on a private conversation with members of the Order of the Phoenix which leads Harry to believe he may be possessed by Lord Voldemort.
- 1996: Harry Potter and Hermione Granger are kicked out of the Hogwarts Library by Irma Pince after being caught in conversation. Once back at the Gryffindor Tower, Romilda Vane tries to slip Harry a Love Potion.