Du skulle gå tillbaka till var du än var en timme sedan
En tidsomvandlare tar användaren tillbaka till var de var en timme (per tur) innan de använde den.
The dark ward dissolved. Harry had the sensation that he was flying very fast, backward. A blur of colors and shapes rushed past him, his ears were pounding, he tried to yell but couldn’t hear his own voice —
And then he felt solid ground beneath his feet, and everything came into focus again —
He was standing next to Hermione in the deserted entrance hall and a stream of golden sunlight was falling across the paved floor from the open front doors. He looked wildly around at Hermione, the chain of the hourglass cutting into his neck.
Harry Potter and the Prisoner of Azkaban - Chapter 21
En tidsomvandlare är inte en realitetskrypningsenhet. Det flyttar bara användaren / användarna tillbaka till var de var tidigare.
Om de redan hade bott i en timme så skulle de hamna i pensionen. Annars skulle de sluta i den verkliga världen.