13 April is the 103rd day of the year (104th in leap years). There are 262 days remaining.
- Between 1991 and 1998: Millicent Bulstrode's check-out of Quidditch Through the Ages from the Hogwarts Library ends.
- 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.
- 13 April on Wikipedia