1981: Voldemort attacks James and Lily Potter in their house, but fails to kill their son Harry Potter and is instead defeated by the magic protecting him. Thus, the First Wizarding War ends.
1991: Harry Potter and Ron Weasley save Hermione Granger from a Mountain Troll in the girl’s bathroom, released by Professor Quirrell as a diversion as he attempts to steal the Philosopher’s Stone. This event signals the start of their life-long friendship.
1992: Sir Nicholas celebrates his 500th death day with Harry, Ron, and Hermione in attendance. Ginny Weasley, under the influence of Tom Riddle’s diary, opens the Chamber of Secrets and Filch’s cat Mrs. Norris is petrified by the basilisk.
1993: Sirius Black enters Hogwarts Castle and attacks the Fat Lady.
1994: The Goblet of Fire chooses Cedric Diggory, Fleur Delacour, and Viktor Krum as its Champions. However, Harry Potter is also announced as the unexpected fourth champion to mixed reactions from his peers.