Minnesota children can keep an eye on Old Saint Nick’s journey around the globe tonight (TUE). For more than 50 years, the North American Aerospace Defense Command, or NORAD, has been tracking Santa on Christmas Eve and providing up-to-date information on his whereabouts. US Army Capt. Ruth Castro says NORAD uses the latest technology to pin down the exact location of the reindeer-powered sleigh. NORAD’s Santa-tracking mission began accidentally in 1955, when a department store placed an ad encouraging families to call Santa Claus – with the wrong phone number. A military colonel answered and instructed his staff to check the radar for indications of Santa making his way from the North Pole, and any child who called was given an update.This year trackers can find Santa’s whereabouts online at www.noradsanta.org as well as on smart phones, Facebook, Twitter , YouTube, or by calling 1-877-HI-NORAD.