15 April is the 105th day of the year (106th in leap years). There are 260 days remaining.
- 1865: R. Wilde Aston dies.
- 1992: The Gryffindor first-years have an Astronomy Class at midnight, on the top of the Astronomy Tower.
- 1998: Harry Potter, Ron Weasley and Hermione Granger — amongst others — stay at Shell Cottage and prepare to break into the Lestrange Vault in Gringotts Wizarding Bank.
Behind the scenes
- 1959: Emma Thompson, the actress who plays Sybill Trelawney, is born.
- 1990: Emma Watson, the actress who plays Hermione Granger, is born.