That includes the long-running NORAD tracker, which has been around for 60--count 'em--SIXTY YEARS!
The Google tracker has been around for a few years, but is just as reliable.
There are others around there as well, but nothing can beat those two! They are as accurate as can be.
So ladies and gentlemen, boys and girls, people of all ages--if those trackers tell you that Santa's next stop is your house, you know what that means--GET IN BED ASAP! If he finds even one light on (night lights not included), he will fly past, and will not come around again unless all lights are out and everyone's snoozing. In the words of "Here Comes Santa Claus"--JUMP IN BED AND COVER UP YOUR HEAD, 'CAUSE SANTA CLAUS COMES TONIGHT!