Folks;
I came across this one a little while ago. While the main part of it really doesn't become active until Christmas Eve, there's stuff there to do for younger kids (and the young at heart) such as mini games, and one part of the site even has a Countdown to when Santa launches.
https://www.noradsanta.org/
And yes, you read correctly - this is a site created by the official NORAD people in the USA. From the website...
"The modern tradition of tracking Santa began in 1955 when a young child accidentally dialed the unlisted phone number of the CONAD Operations Center upon seeing an newspaper advertisement telling kids to call Santa. The Director of Operations, Colonel Harry Shoup, answered the phone and instructed his staff to check the radar for indications of Santa making his way south from the North Pole.
Thus a tradition was born, and continued when NORAD was formed in 1958. Each year since, NORAD has dutifully reported Santa’s location on Dec. 24 to millions of children and families across the globe."
A neat little idea to keep the kids interested over the holidays, and maybe to start them watching the skies...