NORAD's Santa Tracking website
NORAD, the North American Air Defense Command, a joint venture between the United States and Canada that tracks incoming missles and other airborne threats is celebrating their 50th anniversary of tracking Santa.
Santa is tracked by satellite, which detects the heat coming from Rudolph's nose, Canadian and American jet fighters who accompany Santa across North America, and various SantaCams who catch glimpses of Santa and his reindeer. They then post live updates throughout the night of Santa's whereabouts.
Be sure to track Santa's journey at the site above!