- Fri, May 24
- Jim Broadbent's birthday
- Sophie Wehner's birthday
- Harry and Ron meet Aragog in Forbidden Forest
- Sat, May 25
- Katie Harrison's birthday
- Alec Hopkins's birthday
- Sun, May 26
- Will Dunn's birthday
- Helena Bonham Carter's birthday
- Detention in the forest; Quirrell drinks unicorn blood
- “Do you know why I admire you, Newt? More, perhaps, than any man I know? You don’t seek power or popularity. You simply ask, is the thing right in itself? If it is, then I must do it, no matter the cost.”
- October 31, 2004 – Door opens on JKRowling.com; three Harry Potter and the Half-Blood Prince chapter titles revealed.
Did You Know
- In early drafts the Malfoy surname was Smart, Spinks and Spungen.