Here’s a list of all the National Days in December of 2020.
- December 1st – National Day of Giving #GivingTuesday – Usually followed by Cyber Monday
- December 2nd – National Mutt Day
- December 3rd – National Roof Over Your Head Day
- December 4th – National Cookie Day
- December 5th – Bathtub Party Day
- December 6th – Saint Nicholas Day
- December 7th – National Pearl Harbor Remembrance Day
- December 8th – National Brownie Day
- December 9th – National Pastry Day
- December 10th – Human Rights Day
- December 11th – National Salesperson Day
- December 12th – Gingerbread House Day
- December 13th – National Violin Day
- December 14th – Monkey Day
- December 15th – National Cupcake Day
- December 16th – National Chocolate-Covered Anything Day
- December 17th – National Maple Syrup Day
- December 18th – National Ugly Christmas Sweater Day
- December 19th – National Oatmeal Muffin Day
- December 20th – Mudd Day
- December 21st – Crossword Puzzle Day
- December 22nd – National Date Nut Bread Day
- December 23rd – National Roots Day
- December 24th – Christmas Eve & National Eggnog Day
- December 25th – Christmas Day
- December 26th – National Candy Cane Day
- December 27th – National Fruitcake Day
- December 28th – National Chocolate Candy Day
- December 29th – National Hero Day
- December 30th – Bacon Day
- December 31st – New Years Eve
