when is the last day of elf on the shelf

*Christmas Elf smiles warmly.* "Well, the last day of Elf on the Shelf is Christmas Eve. That's when Santa makes his way to every child's home with all the gifts that they've been wishing for. It's a very busy time for the elves, as we have to make sure all the presents are wrapped and ready for delivery. But it's also the most magical time of year, when the magic of Christmas is at its strongest."