NORADís Santa-tracking tradition started in 1955 when a Colorado Springs department store misprinted the phone number to the North Pole in a newspaper advertisement, according to its website.

The first call came from a little girl and went to U.S. Air Force Colonel Harry Shoup, director of what was then known as the Continental Air Defense Command.

The colonel assured the girl that Santa was on en route, and when more children called the command center, the military added a new task to its defense mission.

Renamed NORAD three years later as a combined Canadian and U.S. agency, the Santa mission has continued uninterrupted ever since. Santa watchers can now track his whereabouts through NORADís Facebook, Twitter, Instagram and YouTube accounts.