*[[25 May]]: [[Harry Potter|Harry]] overhears [[Quirinus Quirrell|Quirrell]] arguing with [[Tom Riddle|Lord Voldemort]], and assumes that [[Severus Snape|Snape]] is threatening Quirrell.{{Fact}}
*[[25 May]]: [[Harry Potter|Harry]] overhears [[Quirinus Quirrell|Quirrell]] arguing with [[Tom Riddle|Lord Voldemort]], and assumes that [[Severus Snape|Snape]] is threatening Quirrell.{{Fact}}
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*[[26 May]]: [[Harry Potter]], [[Hermione Grangerpooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo]], [[Neville Longbottom]]<!-- DO NOT change to Ron Weasley. Book canon takes precedence over film version. -->, and [[Draco Malfoy]] serve detention in the [[Forbidden Forest]] with Rubeus Hagrid. They spot a dead [[unicorn]] and Harry encounters [[Tom Riddle|Lord Voldemort]] for the first time since his infancy.{{Fact}}
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*[[26 May]]: [[Harry Potter]], [[Hermione Granger]], [[Neville Longbottom]]<!-- DO NOT change to Ron Weasley. Book canon takes precedence over film version. -->, and [[Draco Malfoy]] serve detention in the [[Forbidden Forest]] with Rubeus Hagrid. They spot a dead [[unicorn]] and Harry encounters [[Tom Riddle|Lord Voldemort]] for the first time since his infancy.{{Fact}}
*[[4 June]]: Harry, Ron, and Hermione keep the [[Philosopher's Stone]] from [[Quirinus Quirrell|Professor Quirrell]], Quirrell dies and [[Tom Riddle|Lord Voldemort]] leaves the physical world once again without a body.{{Fact}}
*[[4 June]]: Harry, Ron, and Hermione keep the [[Philosopher's Stone]] from [[Quirinus Quirrell|Professor Quirrell]], Quirrell dies and [[Tom Riddle|Lord Voldemort]] leaves the physical world once again without a body.{{Fact}}
*[[31 July]]: Harry, on his twelfth birthday, is visited by [[Dobby]]. He receives a warning from the [[Improper Use of Magic Office]].{{Fact}}
*[[31 July]]: Harry, on his twelfth birthday, is visited by [[Dobby]]. He receives a warning from the [[Improper Use of Magic Office]].{{Fact}}
Winter: A secret passage behind a mirror on the fourth floor caves in, forcing Fred and George to stop using it. It formerly led to Hogsmeade.[citation needed]