August 18 is the 230th day of the year (231st in leap years). There are 135 days remaining until the end of the year.
- 1994: The final of the 422nd Quidditch World Cup was held, with Ireland beating Bulgaria. Following the match, Barty Crouch Jr. cast a Dark Mark using Harry Potter's wand.
- 1917: Celestina Warbeck
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