Time-Turner

The Time-Turner is a device capable of time travel. The Time-Turner resembled an hourglass on a necklace. The number of times one turns the hourglass corresponds to the number of hours one travels back in time.

Hermione Granger received one from Professor McGonagall in 1993 so she could attend more classes in her third year than time would allow. Since McGonagall made her swear to not tell anyone about it, she didn't mention it to Harry or Ron until the end of the school year, when she and Harry used it to travel back in time and save Sirius Black and Buckbeak from certain death. Special permission from the Ministry of Magic had to be sought to allow Hermione to use one, but her academic record ensured that permission was given. The confusions of time travel were such that Hermione chose to drop a few subjects at the end of her third year so she could have a normal schedule again. It is also unknown what the affect of living what is essentially another year had on Hermione, whether her use of the Time-Turner for such an extended period time added an entire year to her physical life.

During the Battle of the Department of Mysteries in 1996, the Ministry's entire supply of Time Turners were destroyed. It is unknown when or if the Ministry of Magic will replace them, or if it is even possible to.

Appearances

 * Harry Potter and the Prisoner of Azkaban
 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Half-Blood Prince