With the world population topping eight billion for the first time, "Santa is flying faster than ever; we estimate he's traveling over Mach 7 this year"—seven times the speed of sound, more than a mile per second—"to hit all those datapoints around the world in one night," says Adam Gorski, aerospace engineer for Exton, Pennsylvania-based Ansys Government Initiatives.
source https://www.lifetechnology.com/blogs/life-technology-science-news/these-tech-firms-live-track-this-years-fastest-ever-santa-with-norad-data