tradition.....have some kind of European theme dinner that night....tie it in with your Euro ancestry(if you have that background)...to make it meaningful.....let them put shoes out in front of a Fire place or your front door.....and you give them a couple small stocking filler like gifts/treats and mix in the subwoofers too. Then it doesn't have to feel like you just took a present out early...and you get a new tradition to boot. And it doesn't really matter the date because it's celebrated on various days anyway. You'll be a tad early, but fair play.