when does an elf on the shelf come back

The Elf on the Shelf usually returns to a home in mid-to-late November, to begin observing children's behavior. However, this can vary depending on the family's personal preferences. The Elf may return earlier or later than this, depending on their individual plans and the family's needs. The Elf will continue to observe children's behavior until Christmas Eve, when they return to the North Pole to report back to Santa.