What national day might it be? What topic or product is worth a whole day's attention? Could it be National Play Day with Dad? Or National Parfait Day? or Shopping Reminder Day? Yes it is all of those.
That last one is getting a head start on your shopping list to ensure "stress-free celebrations and more time to enjoy the festive fun."
One is supposed to shop before Black Friday. That day has such backlash it has a competing national day titled: Buy Nothing Day.
Shopping Reminder Day falls a month before Christmas - hence November 25th. "Make a nice list or what you need, or what gifts that you need to buy for people. If you are prepared for everything, call up a friend and remind them that it's Shopping Reminder Day." Department of Redundancy Department is having a hand in this.
There are dozens of jokes about Black Friday - about crowds, pushing, fighting and injuries. There are no jokes about Buy Nothing Day. I guess it is no joke.