18 June is the 169th day of the year (170th in leap years). There are 196 days remaining until the end of the year.
- Unknown year: Elsbeth M. dies.
- 1996: Dumbledore's Army arrives at the Ministry of Magic just after midnight. The Battle of the Department of Mysteries takes place. 
Behind the scenes
- 2010: The ride Harry Potter and the Forbidden Journey opens in The Wizarding World of Harry Potter.