18 Social Media Holidays to Celebrate This December

As the year draws to a close and 2025 approaches swiftly, excitement fills the air for a season of unwinding, reflection, spending time with loved ones, and celebrating traditions.

Whatever your holiday of choice, we’re proud to mark December as a month of warmth, the promise of new beginnings, and some wholesome social media holidays. 

December 1. World AIDS Day #WorldAIDSDay

December 2. Cyber Monday #CyberMonday 

December 3. International Day of Persons with Disabilities #IDPWD

December 4. National Cookie Day #NationalCookieDay

December 5. World Soil Day #WorldSoilDay

December 5. International Ninja Day #InternationalNinjaDay

December 8. Pretend to Be a Time Traveler Day #TimeTravelerDay #PretendToBeATimeTravelerDay 

December 10. International Human Rights Day #HumanRightsDay

December 10. International Animal Rights Day #AnimalRightsDay

December 10. Nobel Prize Day #NobelPrize

December 11. International Mountain Day #InternationalMountainDay

December 21. First Day of Winter #WinterSolstice

December 23. Festivus #Festivus #AiringOfGrievances

December 24. Christmas Eve #ChristmasEve #MerryChristmas

December 25. Christmas Day #Christmas #MerryChristmas

December 7. Hanukkah Begins #Hanukkah #Chanukah

December 31. New Year’s Eve #NYE #NewYearsEve

December 31. No Interruptions Day #NoInterruptionsDay

Ever thought Santa Claus and ninjas could share common ground? Prepare to be amused as we explore creative ways brands have embraced these holidays to connect with their audience online. Who knows, you might just find a spark of inspiration for your very own campaign. 

December 1. World AIDS Day #WorldAIDSDay

Established in 1988, the global movement is dedicated to raising awareness of the AIDS pandemic, showing support for those living with the disease and mourning those who have died of it. It’s all about working together to end the stigma… It’s what Gaëtan Dugas would have wanted. We recommend watching this film: Killing Patient Zero, 2019 

December 2. Cyber Monday #CyberMonday

Cyber Monday is the closing act after a weekend of in-store shopping, offering shoppers the chance to make those purchases online at great discounts and convenience. 

December 3. International Day of Persons with Disabilities #IDPWD

It wasn’t until a TikTok of a deaf man stuck in an elevator, unable to communicate via the emergency helpline, went viral that a lot of online users reckoned with the depth of the challenges that are tied to living with a disability. This UN-sanctioned day mobilizes support for issues relating to the inclusion of people with both visible and invisible disabilities. 

December 4. National Cookie Day #NationalCookieDay

There’s nothing like a good cookie. Hard on the outside and soft on the inside. From homemade to store-bought options, the only way to celebrate this holiday is by sinking your teeth into cookie goodness. 

December 5. World Soil Day #WorldSoilDay

Loamy, clay, and sandy soil. I still remember this from primary school (although there seem to be more soil types than what we were taught then). Since food makes the world go round and there’s no food without soil, it’s more than necessary to have a day to pay attention to the importance of healthy soil worldwide.  

December 5. International Ninja Day #InternationalNinjaDay

The dream career path of thousands of children around the world, International Ninja Day is the perfect opportunity to honor these stealth and lightning-fast warriors. Fun fact: The holiday was created by a burger restaurant (Ninja Burgers) to celebrate the speed at which their burgers are made and delivered. 

December 8. Pretend to Be a Time Traveler Day #TimeTravelerDay #PretendToBeATimeTravelerDay

This social media holiday pretty much speaks for itself. Would you go forward in time to explore the future (maybe we’ll finally get flying cars), or would you travel into the past to witness the genesis of human civilization?  

December 10. International Human Rights Day #HumanRightsDay

December 10 this year marks the 76th anniversary of the Universal Declaration of Human Rights, observed by the international community yearly. The principles of freedom, justice, and equality are hallmarks of this holiday. 

December 10. International Animal Rights Day #AnimalRightsDay

Poetically falling on the same day as International Human Rights Day, International Animal Rights Day is a global observance created to defend the belief that non-human beings have the right to a life free from exploitation and suffering. It also recognizes animals as sentient beings who deserve protections just as people do. 

December 10. Nobel Prize Day #NobelPrize

Aligning with the yearly anniversary of the death of the eponymous Alfred Nobel, this day lauds excellence in diverse fields, recognizing individuals for their outstanding achievements made for the benefit of humanity. 

December 11. International Mountain Day #InternationalMountainDayInternational

International Mountain Day aims to create a large social movement that amplifies awareness about the significance of mountain ecosystems and key issues regarding these beauties of nature. This ranges from mountain development issues to the effects of pollution and environmental degradation. 

December 21. First Day of Winter #WinterSolstice

Winter officially begins on this day, marked by the shortest day (because it has the fewest hours of sunlight throughout the year) and the longest night experienced in the Northern Hemisphere.  

December 23. Festivus #Festivus #AiringOfGrievances

This secular holiday usually stands as an alternative to the pressures of the Christmas and wider holiday season. Instead, Festivus allows you to air out your grievances and get things off your chest. We thank the TV show Seinfield for this marvel (The Strike, 1997, season 9, episode 10).   

December 24. Christmas Eve #ChristmasEve #MerryChristmas

From the anticipation and the warm hugs to the setting up of presents underneath the Christmas tree (unless you’re waiting for Santa to work his magic), words don’t quite capture the feeling in the air on the day before Christmas.  

December 25. Christmas Day #Christmas #MerryChristmas

Celebrated by billions around the world to commemorate the birth of Jesus Christ, Christmas Day is one for joy, laughter, and merriment. While some prefer to spend the day cozying indoors with their families and friends, others start their day in church, shopping, or at lunch.   

December 25. Hanukkah Begins #Hanukkah #Chanukah

Hanukkah, the Festival of Lights, begins on this day and runs until January 2. The eight-day holiday commemorates the Jewish people's rededication to the Temple, observed with nightly menorah lighting, special prayers, and fried foods. 

December 31. New Year’s Eve #NYE #NewYearsEve

The global countdown to welcome the New Year reaches its peak. We love a good party to count the seconds down. 

December 31. No Interruptions Day #NoInterruptionsDay

Close out the year on a peaceful note by creating a quiet bubble of concentration. The recommendation is to disconnect from the world for a little while and focus solely on yourself – whether it's work that needs to be done or evaluating your goals as the new year approaches.  

That’s a wrap  

Finish the year on a high note with insights that make a difference to your creative strategy for social. 

For more content to elevate your social media and marketing arsenal, check out our Social Media Holiday Calendar 2024.