Professor Croaker’s law
- "As our investigations currently stand, the longest period that may be relived without the possibility of serious harm to the traveller or to time itself is around five hours."
- —Professor Saul Croaker
states that five hours is the longest someone can go back in time without a possibility of serious harm to the traveller or time itself.
This law was named for Professor Saul Croaker
, a life-long Unspeakable
who studied time
-magic at the Department of Mysteries
at the British Ministry of Magic
Notes and references