1980 Calendar with National Holidays, Optional Days Off, and Commemorative Dates in the United States.
December 1980
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|---|---|
| 1336 | 2337 | 3338 | 4339 | 5340 | 6341 | 7342 |
| 8343 | 9344 | 10345 | 11346 | 12347 | 13348 | 14349 |
| 15350 | 16351 | 17352 | 18353 | 19354 | 20355 | 21356 |
| 22357 | 23358 | 24359 | 25360 | 26361 | 27362 | 28363 |
| 29364 | 30365 | 31366 |
December Holidays and Commemorative Dates
- 21 - Winter
- 25 - Christmas Day
Holidays and Commemorative Dates in December 1980
December 1980 observances Holiday
Optional
| Date | Day | Description |
|---|---|---|
| 1 | Mon | Cyber Monday |
| 1 | Mon | National Christmas Lights Day |
| 1 | Mon | World AIDS Day |
| 2 | Tue | Giving Tuesday |
| 2 | Tue | International Day for the Abolition of Slavery |
| 2 | Tue | National Mutt Day |
| 3 | Wed | Hanukkah |
| 3 | Wed | International Day of Persons with Disabilities |
| 4 | Thu | International Day of Banks |
| 4 | Thu | National Cookie Day |
| 4 | Thu | Wildlife Conservation Day |
| 5 | Fri | Day of the Ninja |
| 5 | Fri | International Volunteer Day |
| 5 | Fri | National Repeal Day |
| 5 | Fri | World Soil Day |
| 6 | Sat | National Bartender Day |
| 6 | Sat | National Gazpacho Day |
| 6 | Sat | National Miners Day |
| 6 | Sat | St. Nicholas Day |
| 7 | Sun | Candle Day |
| 7 | Sun | International Civil Aviation Day |
| 7 | Sun | National Cotton Candy Day |
| 7 | Sun | National Letter Writing Day |
| 7 | Sun | Pearl Harbor Remembrance Day |
| 7 | Sun | World Pear Day |
| 8 | Mon | Feast of the Immaculate Conception |
| 8 | Mon | National Brownie Day |
| 9 | Tue | Christmas Card Day |
| 9 | Tue | Green Monday |
| 9 | Tue | International Anti-corruption Day |
| 9 | Tue | International Day of Commemoration and Dignity of the Victims of the Crime of Genocide |
| 9 | Tue | National Llama Day |
| 9 | Tue | National Pastry Day |
| 10 | Wed | Dewey Decimal System Day |
| 10 | Wed | Human Rights Day |
| 10 | Wed | International Animal Rights Day |
| 10 | Wed | Jane Addams Day |
| 10 | Wed | Nobel Prize Day |
| 11 | Thu | International Mountain Day |
| 11 | Thu | UNICEF Birthday |
| 12 | Fri | Feast of Our Lady of Guadalupe |
| 12 | Fri | Gingerbread House Day |
| 12 | Fri | International Day of Neutrality |
| 12 | Fri | International Universal Health Coverage Day |
| 12 | Fri | National Poinsettia Day |
| 13 | Sat | National Cocoa Day |
| 13 | Sat | National Day of the Horse |
| 13 | Sat | National Guard Birthday |
| 13 | Sat | National Salesperson Day |
| 13 | Sat | National Violin Day |
| 13 | Sat | Saint Lucy's Day |
| 14 | Sun | Monkey Day |
| 14 | Sun | National Free Shipping Day |
| 15 | Mon | Bill of Rights Day |
| 15 | Mon | National Cupcake Day |
| 15 | Mon | National Wear Your Pearls Day |
| 16 | Tue | Las Posadas: A Journey Of Faith And Tradition |
| 16 | Tue | National Chocolate Covered Anything Day |
| 17 | Wed | National Maple Syrup Day |
| 17 | Wed | Pan American Aviation Day |
| 17 | Wed | Wright Brothers Day |
| 18 | Thu | Answer The Telephone Like Buddy The Elf Day |
| 18 | Thu | Arabic Language Day |
| 18 | Thu | International Migrants Day |
| 18 | Thu | National Twin Day |
| 19 | Fri | National Emo Day |
| 20 | Sat | International Human Solidarity Day |
| 20 | Sat | National Ugly Sweater Day |
| 20 | Sat | National Underdog Day |
| 21 | Sun | Look On The Bright Side Day |
| 21 | Sun | National Crossword Puzzle Day |
| 21 | Sun | National Short Girl Appreciation Day |
| 21 | Sun | National Wreaths Across America Day |
| 21 | Sun | Winter |
| 21 | Sun | Winter Solstice |
| 21 | Sun | Yule |
| 22 | Mon | National Cookie Exchange Day |
| 22 | Mon | National Short Person Day |
| 23 | Tue | Festivus |
| 23 | Tue | National Roots Day |
| 24 | Wed | Christmas Eve |
| 24 | Wed | The Feast of the Seven Fishes |
| 25 | Thu | Christmas Day |
| 26 | Fri | Boxing Day |
| 26 | Fri | Kwanzaa |
| 27 | Sat | International Day of Epidemic Preparedness |
| 27 | Sat | No Interruptions Day |
| 28 | Sun | National Call a Friend Day |
| 28 | Sun | National Card Playing Day |
| 28 | Sun | National Download Day |
| 28 | Sun | National Short Film Day |
| 28 | Sun | Pledge of Allegiance Day |
| 29 | Mon | Still Need To Do Day |
| 29 | Mon | Wounded Knee |
| 30 | Tue | National Bacon Day |
| 31 | Wed | New Year's Eve |