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278 Social Media Holidays for Your 2021 Content Calendar [+Template]

4 months ago 18

Do you celebrate International Cat Day, Pizza Day, or Talk Like a Pirate Day?

There are a plethora of observance days worldwide during which marketers can share content relevant to their industries, get involved in a movement, or simply generate more awareness. But odds are, you probably don't acknowledge these days until you see your favorite brand posting about it.

 Social Media Calendar Template [Access Now]

These social media "holidays" are a fun way to connect with new and existing followers who share an affinity for a specific food, fictional character, or pet.

While we don't suggest sharing content on social media and then adding an irrelevant holiday hashtag to it, these holidays can be a chance to promote your brand in a relevant way. Not doing so could cause you to miss valuable opportunities where your brand can join the conversations taking place among members of your target audience.

To help you plan for trending holidays, we created a list that you can bookmark, as well as a downloadable calendar so you can receive automatic reminders.

hubspot social media calendar template

When you plan your social media activities in advance, it will:

Make it easier to coordinate campaigns Grow your reach and engagement Scale your social media marketing ...and more

Download Free Social Media Content Calendar Template

Manage and plan your social media content with a handy calendar guide and template.

Download Free Social Media Content Calendar Template

Downloadable Holiday Calendar

To help you keep track of all these unique holidays, here's a Social Media Holiday Google Calendar.

Aside from 2021 holidays, we've also set dates on the calendar to repeat annually — either on the exact date they occur or the weekday they occur within the month.

Want to finish out your 2021 calendar with some upcoming holiday posts? Tap the + symbol in the lower right-hand corner of the calendar below to add it to your own Google calendar.

social media holiday calendar templateUse the Above Template to Plan Out Your Social Media Holiday Posts

National & Global Holiday Calendar: 2021

The list isn't exhaustive (there are a lot of food-specific holidays out there), and these dates and hashtags may still be subject to change. But this is a great starting point for social media marketers who want to learn more about what's trending and how they can plan their content in a way that will be fun and engaging on social platforms.

January 2021 Social Media Holidays February 2021 Social Media Holidays March 2021 Social Media Holidays April 2021 Social Media Holidays May 2021 Social Media Holidays June 2021 Social Media Holidays July 2021 Social Media Holidays August 2021 Social Media Holidays September 2021 Social Media Holidays October 2021 Social Media Holidays November 2021 Social Media Holidays December 2021 Social Media Holidays

January 2021 Social Media Holidays

iowa state athletics national sticker day social media holiday tweet

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January 1: New Year's Day #NewYearsDay January 2: Science Fiction Day #ScienceFictionDay January 4: National Trivia Day #NationalTriviaDay January 5: National Bird Day #NationalBirdDay January 11: Human Trafficking Awareness Day #HumanTraffickingDay January 11: Clean Off Your Desk Day #CleanOffYourDeskDay January 13: National Sticker Day #NationalStickerDay January 15: National Hat Day #NationalHatDay January 18: Martin Luther King, Jr. Day (Third Monday of January) #MLKDay January 20: Cheese Lovers Day #CheeseLoversDay January 21: National Hugging Day #NationalHuggingDay January 21: Get to Know Your Customers Day (third Thursday of every quarter) #GetToKnowYourCustomersDay January 24: National Compliment Day #NationalComplimentDay January 25: Opposite Day #OppositeDay January 25: Community Manager Appreciation Day (Last Monday of January) #CMAD January 28: Data Privacy Day #PrivacyAware

February 2021 Social Media Holidays

zach covey national weather persons day social media holiday tweet

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February 1 - 28: Black History Month February 2: Groundhog Day #GroundhogDay February 2: World Wetlands Day #WorldWetlandsDay February 4: World Cancer Day #WorldCancerDay February 5: National Weatherperson’s Day #NationalWeatherpersonsDay February 7: Super Bowl LV (Varies each year based on the U.S. Football season) #SBLV #SuperBowlSunday #SuperBowl February 7: National Send a Card to a Friend Day #SendACardToAFriendDay February 8: National Boy Scouts Day #BoyScoutsDay February 9: National Pizza Day #NationalPizzaDay February 9: Safer Internet Day #SID2021 February 11: Inventors Day #InventorsDay February 12: Chinese New Year #ChineseNewYear February 13: World Radio Day #WorldRadioDay February 14: Valentine's Day #ValentinesDay February 15: Presidents Day (Third Monday of February) #PresidentsDay February 16: Mardi Gras #MardiGras February 17: Random Acts of Kindness Day #RandomActsOfKindnessDay February 18: National Battery Day #NationalBatteryDay February 20: World Day of Social Justice #SocialJusticeDay February 20: Love Your Pet Day #LoveYourPetDay February 21: International Mother Language Day #IMLD

March 2021 Social Media Holidays

national park service national day of unplugging social media holiday tweet

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March 2: National Read Across America Day #ReadAcrossAmerica & #DrSeuss March 3: World Wildlife Day #WorldWildlifeDay March 4: National Grammar Day #NationalGrammarDay March 5: National Employee Appreciation Day (First Friday of March) #EmployeeAppreciationDay March 5: National Day of Unplugging (First Friday of March) #NationalDayOfUnplugging March 6: National Dentist's Day #DentistsDay March 7: National Be Heard Day #NationalBeHeardDay March 7: National Cereal Day #NationalCerealDay March 8: International Women's Day #BeBoldForChange March 8: National Proofreading Day #NationalProofreadingDay March 10: National Pack Your Lunch Day #NationalPackYourLunchDay March 10: National Women and Girls HIV/AIDS Awareness Day #NWGHAAD March 11: National Worship of Tools Day #WorshipOfToolsDay March 11: Popcorn Lover's Day #PopcornLoversDay March 12: National Girl Scout Day #GirlScoutDay March 14: Potato Chip Day #NationalPotatoChipDay March 14: Pi Day #PiDay (To go the extra mile, post this at 1:59, as Pi equals 3.14159...) March 14: Daylight Savings #DaylightSavings March 15: National Napping Day #NationalNappingDay March 15: World Consumer Rights Day #WorldConsumerRightsDay March 16: National Freedom of Information Day #FreedomOfInformationDay March 17: St. Patrick's Day #StPatricksDay March 18: Awkward Moments Day #NationalAwkwardMomentsDay March 19: National Let's Laugh Day #NationalLetsLaughDay March 19: World Sleep Day #WorldSleepDay March 19: Red Nose Day #RedNoseDay March 20: International Day of Happiness #InternationalDayofHappiness March 20: World Storytelling Day #WorldStorytellingDay March 20: First Day of Spring #FirstDayofSpring March 21: International Day for the Elimination of Racial Discrimination #RacialDiscriminationDay March 21: World Poetry Day #WorldPoetryDay March 22: World Water Day #WorldWaterDay March 23: National Puppy Day #NationalPuppyDay March 23: American Diabetes Association Alert Day #AmericanDiabetesAssociationAlertDay March 25: Tolkien Reading Day #TolkienReadingDay March 26: National Spinach Day #NationalSpinachDay March 26: Purple Day #PurpleDay March 27: Earth Hour Day #EarthHour March 30: Doctor's Day #NationalDoctorsDay March 30: National Take a Walk in the Park Day #NationalWalkInTheParkDay March 31: World Backup Day #WorldBackupDay March 31: Transgender Day of Visibility #TDOV March 31: Equal Pay Day #EqualPayDay

hubspot social media calendar template

When you plan your social media activities in advance, it will:

Make it easier to coordinate campaigns Grow your reach and engagement Scale your social media marketing ...and more

Download Free Social Media Content Calendar Template

Manage and plan your social media content with a handy calendar guide and template.

Download Free Social Media Content Calendar Template

April 2021 Social Media Holidays

christina alexandria national siblings day social media holiday tweet

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April 1 - 30: National Stress Awareness Month April 1: April Fools Day #AprilFools April 2: World Autism Awareness Day #WAAD April 3: Find a Rainbow Day #FindARainbowDay April 4: Hug a Newsperson Day #HugANewsperson April 5: World Health Day #LetsTalk April 6: National Walking Day #NationalWalkingDay April 10: National Siblings Day #NationalSiblingsDay April 10: Encourage a Young Writer Day #EncourageAYoungWriterDay April 11: National Pet Day #NationalPetDay April 12: International Day of Human Space Flight #InternationalDayOfHumanSpaceFlight April 15: National Tax Day #TaxDay April 15: Get to Know Your Customers Day (third Thursday of every quarter) #GetToKnowYourCustomersDay April 15: National High-Five Day #NH5D April 16: National Stress Awareness Day #StressAwarenessDay April 16: National Wear Your Pajamas to Work Day #PJDay April 17: Haiku Poetry Day #HaikuPoetryDay April 18: National Columnists' Day #NationalColumnistDay April 20: National Look-Alike Day #NationalLookAlikeDay April 21: National Administrative Professionals Day #AdministrativeProfessionalsDay April 22: Earth Day #EarthDay2021 April 23: National Take Our Daughters and Sons to Work Day #COUNTONME April 23: National Picnic Day #NationalPicnicDay April 23: World Book Day #WorldBookDay April 23: Arbor Day #ArborDay April 25: National Telephone Day #NationalTelephoneDay April 25: World Malaria Day #EndMalariaForGood April 28: Denim Day #DenimDay April 29: International Dance Day #InternationalDanceDay April 30: National Honesty Day #NationalHonestyDay April 30: National Adopt a Shelter Pet Day #AdoptAShelterPetDay April 30: International Jazz Day #JazzDay

May 2021 Social Media Holidays

violet the Newfy world password day social media holiday tweet

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May 1: May Day #MayDay May 1: International Workers Day #IntWorkersDay May 3: World Press Freedom Day #WPFD2021 #PressFreedom May 4: Star Wars Day #StarWarsDay & #Maythe4thBeWithYou May 4: International Firefighters Day #InternationalFirefightersDay May 4: World Asthma Day #WorldAsthmaDay May 4: Thank a Teacher Day #ThankATeacher May 5: Cinco de Mayo #CincoDeMayo May 6: National Nurses Day #NursesDay May 7: World Password Day #WorldPasswordDay May 7: Space Day #SpaceDay May 9: Europe Day #EuropeDay May 9: Mother's Day #MothersDay May 12: National Limerick Day #NationalLimerickDay May 12: National Receptionist Day #NationalReceptionistDay May 15: International Day of Families #FamilyDay May 16: Love a Tree Day #LoveATreeDay May 17: International Day Against Homophobia and Transphobia #IDAHOT2021 May 21: National Memo Day #NationalMemoDay May 21: National Bike to Work Day #BTWD May 21: Endangered Species Day #EndangeredSpeciesDay May 24: National Scavenger Hunt Day #NationalScavengerHuntDay May 28: Hamburger Day #NationalHamburgerDay May 28: Heat Awareness Day (Last Friday of May) #NoFryDay May 29: Paperclip Day #PaperclipDay May 31: Memorial Day (Fourth Monday of May) #MemorialDay #MDW May 31: World No-Tobacco Day #NoTobacco

June 2021 Social Media Holidays

Alex bowman National Donut Day social media  holiday tweet

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June 1: Global Day of Parents #GlobalDayOfParents June 4: National Donut Day #NationalDonutDay June 5: World Environment Day #WorldEnvironmentDay June 6: National Cancer Survivor’s Day #NCSD2021 June 6: Higher Education Day #HigherEducationDay June 8: World Oceans Day #WorldOceansDay June 8: Best Friends Day #BestFriendsDay June 13: International Children’s Day #ChildrensDay June 14: World Blood Donor Day #GiveBlood June 14: National Flag Day #FlagDay June 19: Juneteenth (Freedom Day) #Juneteenth June 20: World Refugee Day #WithRefugees June 20: First Day of Summer June 20: Father’s Day #FathersDay June 21: National Selfie Day #NationalSelfieDay June 21: World Music Day #WorldMusicDay June 21: International Yoga Day #InternationalYogaDay June 24: National Handshake Day #HandshakeDay June 25: Take Your Dog to Work Day #TakeYourDogToWorkDay June 27: National Sunglasses Day #NationalSunglassesDay June 30: Social Media Day #SMDay

July 2021 Social Media Holidays

Stadium Give Something Away Day Social Media Holiday Tweet

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July 1: National Postal Worker Day #NationalPostalWorkerDay July 2: World UFO Day #WorldUFODay July 4: Independence Day (United States) July 7: World Chocolate Day #WorldChocolateDay July 11: Cheer Up the Lonely Day #CheerUpTheLonelyDay July 12: Malala Day #MalalaDay July 15: Give Something Away Day #GiveSomethingAwayDay July 15: Get to Know Your Customers Day #GetToKnowYourCustomersDay July 17: World Emoji Day #WorldEmojiDay July 18: Nelson Mandela International Day #MandelaDay July 30: Talk in an Elevator Day #TalkInAnElevatorDay July 30: International Day of Friendship #DayOfFriendship

August 2021 Social Media Holidays

Wienerschnitzel National Lemonade Day Social Media Holiday Tweet

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August 1: Respect for Parents Day #RespectForParentsDay August 2: National Coloring Book Day #NationalColoringBookDay August 8: International Cat Day #InternationalCatDay August 9: National Book Lovers Day #NationalBookLoversDay August 10: National Lazy Day #LazyDay August 11: National Sons and Daughters Day #SonsAndDaughtersDay August 12: International Youth Day #YouthDay August 12: World Elephant Day #WorldElephantDay August 13: International Lefthanders Day #LefthandersDay August 15: National Relaxation Day #NationalRelaxationDay August 16: National Tell a Joke Day #NationalTellAJokeDay August 19: World Photo Day #WorldPhotoDay August 19: World Humanitarian Day #WorldHumanitarianDay August 20: National Lemonade Day #NationalLemonadeDay August 26: National Dog Day #NationalDogDay August 26: National Women’s Equality Day #WomensEqualityDay

September 2021 Social Media Holidays

Gaeilge @ Colaiste Naomh Caoimhin EDL 2021 Social Media Holiday Tweet

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September 4: National Wildlife Day #NationalWildlifeDay September 5: International Day of Charity #CharityDay September 6: Labor Day #LaborDay September 6: Read a Book Day #ReadABookDay September 8: International Literacy Day #LiteracyDay September 10: Stand Up To Cancer Day #KissCancerGoodbye September 11: National Day of Service and Remembrance #911Day September 12: Civic Day of Hacking #HackForChange September 12: National Grandparents Day #NationalGrandparentsDay September 12: National Day of Encouragement #DayOfEncouragement September 12: National Video Games Day #NationalVideoGamesDay September 15 - October 15: Hispanic Heritage Month #hispanicheritagemonth September 19: Talk Like a Pirate Day #TalkLikeAPirateDay September 21: International Day of Peace #PeaceDay September 21: Miniature Golf Day #MiniGolfDay September 22: Car-Free Day #CarFreeDay September 22: Hobbit Day #HobbitDay September 22: First Day of Fall September 26: National Pancake Day #NationalPancakeDay September 26: European Day of Languages #EDL2021 September 27: World Tourism Day #WTD2021 September 28: World Rabies Day #WorldRabiesDay September 28: National Good Neighbor Day #GoodNeighborDay September 29: National Women’s Health and Fitness Day #FitnessDay September 30: International Podcast Day #InternationalPodcastDay

October 2021 Social Media Holidays

The Beatles 4ever World vegetarian Day Social Media Holiday Tweet

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October 1: International Day of Older Persons #UNDOP October 1: International Coffee Day #InternationalCoffeeDay October 1: World Vegetarian Day #WorldVegetarianDay October 1: World Smile Day #WorldSmileDay October 2: International Day of Nonviolence #InternationalDayOfNonviolence October 3: National Techies Day #TechiesDay October 4: World Animal Day #WorldAnimalDay October 4: National Taco Day #NationalTacoDay October 4: World Habitat Day #WorldHabitatDay October 5: World Teachers Day #WorldTeachersDay October 10: World Mental Health Day #WorldMentalHeathDay October 11: International Day of the Girl #DayOfTheGirl October 14: World Sight Day #WorldSightDay October 14: National Dessert Day #DessertDay October 15: Global Handwashing Day #GlobalHandwashingDay October 16: World Food Day #FoodDay October 16: Bosses Day #BossesDay October 17: International Day for the Eradication of Poverty #EndPoverty October 20: World Statistics Day #StatisticsDay October 21: Reptile Awareness Day #ReptileAwarenessDay October 21: Get to Know Your Customers Day (third Thursday of every quarter) #GetToKnowYourCustomersDay October 24: United Nations Day #UNDay October 25: Greasy Foods Day #GreasyFoodsDay October 30: National Publicist Day #NationalPublicistDay October 30: Checklist Day #ChecklistDay October 31: Halloween #Halloween

November 2021 Social Media Holidays

Nickelodeon STEM day Social Media Holiday Tweet

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November 1: World Vegan Day #WorldVeganDay November 1: National Authors Day #NationalAuthorsDay November 1: National Cook For Your Pets Day #CookForYourPetsDay November 3: National Sandwich Day #NationalSandwichDay November 4: National Candy Day #NationalCandyDay November 7: Daylight Saving Time Ends #DaylightSavings November 8: National Cappuccino Day #CappuccinoDay November 8: Science, Technology, Engineering, and Medicine (STEM) Day #STEMDay November 11: Veterans Day #VeteransDay November 13: World Kindness Day #WKD November 14: World Diabetes Day #WDD November 15: Clean Out Your Refrigerator Day #CleanOutYourRefrigeratorDay November 15: America Recycles Day #BeRecycled November 16: International Day for Tolerance #ToleranceDay November 16: National Entrepreneurs Day #EntrepreneursDay November 17: International Students Day #InternationalStudentsDay November 19: International Men’s Day #InternationalMensDay November 20: Universal Children’s Day #UNChildrensDay November 21: World Hello Day #WorldHelloDay November 25: Thanksgiving Day #Thanksgiving November 26: National Cake Day #NationalCakeDay November 26: National Day of Listening #DayOfListening November 27: Small Business Saturday (The last Saturday of November) #ShopSmall November 29: Electronic Greeting Card Day #ElectronicGreetingCardDay November 30: Computer Security Day #ComputerSecurityDay

December 2021 Social Media Holidays

Nobel Prize Day Globalnews.ca Social Media HolidayTweet

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December 1: World AIDS Day #WAD2021 December 3: International Day of Persons with Disabilities #IDPWD December 4: National Cookie Day #NationalCookieDay December 5: World Soil Day #WorldSoilDay December 6: Microwave Oven Day #MicrowaveOvenDay December 8: Pretend to Be a Time Traveler Day #PretendToBeATimeTravelerDay December 10: Human Rights Day #HumanRightsDay December 10: Nobel Prize Day #NobelPrize December 10: National Salesperson Day #SalespersonDay December 11: International Mountain Day #InternationalMountainDay December 21: Crossword Puzzle Day #CrosswordPuzzleDay December 21: First Day of Winter #WinterSolstice December 27: No Interruptions Day #NoInterruptionsDay December 31: New Year’s Eve #NYE

Sources: National Day Calendar, Sprout Social, TrackMaven, Holiday Insights, Brownielocks, National Peace Corps Association, Sparkflow, There's a Day for That

Editor's Note: This post was originally published in January 2017 but is updated annually for comprehensiveness. The most recent update of this post was March 2021.

social media content calendar

hubspot social media calendar template

Manage and plan your social media content with a handy calendar guide and template.

Originally published Sep 24, 2021 2:00:00 PM, updated September 30 2021

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