From Harry Potter and the Deathly Hallows: Part 1
Severus. I was beginning to worry that you had lost your way. Come, we've saved you a seat. You bring news I trust?
It will happen Saturday next, at nightfall.
I heard differently my Lord. Dawlish, the auror, has let slip that the Potter boy will not be moved until the 30th of this month, the day before he turns 17.
This is a false trail. The auror office no longer plays any part in the protection of Harry Potter.