Day-Long Observances
Dec. 01. Apple Day
Dec. 01. Day With(out) Art
Dec. 01. Lailat Ul Qadr: The Night of Power
Dec. 01. Pie Day
Dec. 01. World AIDS Day
Dec. 01. Independence Day in Portugal
Dec. 01. National Day in Romania
Dec. 02. Abolition of Slavery Day
Dec. 02. National Day in Central African Republic
Dec. 02. National Day in Laos
Dec. 02. National Holiday in United Arab Emirates
Dec. 03. Disabled Persons Awareness Day
Dec. 04. Cookie Day
Dec. 04. Santa's List Day
Dec. 05. Play Hooky Day
Dec. 05. Bathtub Fun Day
Dec. 05. Discovery Day in Haiti
Dec. 05. National Day in Thailand
Dec. 06. Eid
Dec. 06. Pawnbrokers Day
Dec. 06. Saint Nicholas Day
Dec. 06. Independence of Quito Day in Ecuador
Dec. 06. Independence Day in Finland
Dec. 06. Constitution Day in Spain
Dec. 07. Civil Aviation Day
Dec. 07. Cotton Candy Day
Dec. 07. Letter-Writing Day
Dec. 07. Pearl Harbor Remembrance Day
Dec. 07. Teacher Appreciation Day
Dec. 08. Brownie Day
Dec. 08. Lady of Camarin Day in Guam
Dec. 08. Feast of the Immaculate Conception in Nicaragua
Dec. 08. Constitution Day in Uzbekistan
Dec. 09. Homemade Gift Day
Dec. 09. Independence Day in Tanzania
Dec. 10. Thai Constitution Day in Thailand
Dec. 11. National Day in Burkina Faso
Dec. 12. Poinsettia Day
Dec. 12. Independence Day in Kenya
Dec. 12. Guadalupe Day in Mexico
Dec. 12. Constitution Day in Russia
Dec. 12. Neutrality Day in Turkmenistan
Dec. 13. Cocoa Day
Dec. 13. Friday the 13th
Dec. 13. Republic Day in Malta
Dec. 13. Santa Lucia Day in Sweden
Dec. 14. Email Tag Day
Dec. 14. Shareware Day
Dec. 15. Bill of Rights Day
Dec. 15. Tenth of Tevet
Dec. 15. Kingdom Day in Curacao
Dec. 15. Navidades in Puerto Rico
Dec. 16. Stupid Toy Day
Dec. 16. Independence Day in Bahrain
Dec. 16. Victory Day in Bangladesh
Dec. 16. Posadas in Mexico
Dec. 16. Christmas Observance in Philippines
Dec. 16. Reconciliation Day in South Africa
Dec. 17. Wright Brothers Day
Dec. 18. Bake Cookies Day
Dec. 18. Wear A Plunger On Your Head Day
Dec. 18. Republic Day in Niger
Dec. 19. Oatmeal Muffin Day
Dec. 20. Go Caroling Day
Dec. 20. Underdog Day
Dec. 21. Don't Be A Scrooge Day
Dec. 21. Flashlight Day
Dec. 21. Forefathers' Day
Dec. 21. Winter Solstice
Dec. 21. World Peace Day
Dec. 21. Yalda
Dec. 21. Yule
Dec. 23. Emperor's Birthday in Japan
Dec. 24. Christmas Eve
Dec. 24. Last-Minute Shopper's Day
Dec. 24. Independence Day in Libya
Dec. 25. Christmas
Dec. 25. Constitution Day in Taiwan
Dec. 25. Pumpkin Pie Day
Dec. 25. Birthday of Quaid-i-Azam in Pakistan
Dec. 26. Boxing Day
Dec. 26. Kwanzaa Begins
Dec. 26. Whiner's Day
Dec. 26. Junkanoo in Bahamas
Dec. 26. Boxing Day in Canada
Dec. 26. Day of the Wren in Ireland
Dec. 26. Independence Day in Slovenia
Dec. 26. Goodwill Day in South Africa
Dec. 26. Boxing Day in United Kingdom
Dec. 28. Card Playing Day
Dec. 28. Chocolate Day
Dec. 28. Holy Innocents Day (Childermas)
Dec. 28. Proclamation Day in Australia
Dec. 30. Rizal in Philippines
Dec. 31. Make Up Your Mind Day
Dec. 31. New Year's Eve
Dec. 31. New Year's Resolutions
Dec. 31. Samoan Fire Dance in Western Samoa