Battle of Hogwarts

From Hpwiki

The Battle of Hogwarts is the final battle of the war. It takes place on May 2, 1998 (ITV documentary, December 2007) on the grounds of and in the castle of Hogwarts.

Technically, this would be the Second Battle of Hogwarts, the first taking place the year before and resulting in Dumbledore's Death. This battle, however, is far grander in score and scale.