https://www.polygon.com/2017/11/30/16719890/animal-crossing-pocket-camp-holiday-event-2017-dates

Animal Crossing: Pocket Camp’s first seasonal festivities went live today, Nov. 30. The nondenominational holiday event will run until just after Christmas, giving players new furniture to collect, winter-appropriate clothing to hunt down and, of course, tons of candy canes.

Until the event wraps at 12:59 a.m. on Dec. 26, players will serve as their own campground’s Santa Claus. Every player will receive a Santa hat in their mailbox when they first log in during the campaign, which they can then put on and use to start granting wishes for their animal friends (well, if you want to call them that). Upon completing item requests for potential campers, players will even receive candy canes for their trouble.