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Social Media Holiday Calendar 2021 [Downloadable]

We’ve created a Google Calendar with 300 hashtag holidays to make it easy for you to track the major 2021 branding moments. Add the holidays to your Google Calendar:

Download Calendar

Marketing during social media holidays might have been optional in the past, but today’s consumers expect leading brands to to promote topical content throughout the year. Holiday content does well on social media apps like Clubhouse, and is excellent for SEO (it gets a boost from the seasonal spikes in search volume).

We recommend adding these days to your own calendar, or a team content calendar in a tool like Agorapulse or Sprout Social, so you don’t miss any important brand moments in 2021.

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Happy marketing in 2021! Use this table of contents to skip ahead to any month:

January 2021 Social Media Holidays

Date Holiday Hashtag
Friday, January 1 New Year’s Day #NewYearsDay
Saturday, January 2 Science Fiction Day #ScienceFictionDay
Monday, January 4 National Trivia Day #NationalTriviaDay
Tuesday, January 5 National Bird Day #NationalBirdDay
Monday, January 11 Human Trafficking Awareness Day #HumanTraffickingAwarenessDay
Wednesday, January 13 National Sticker Day #NationalStickerDay
Wednesday, January 13 Clean Off Your Desk Day #CleanOffYourDeskDay
Friday, January 15 National Hat Day #NationalHatDay
Saturday, January 16 Get to Know Your Customers Day #GetToKnowYourCustomersDay
Monday, January 18 Martin Luther King Day #MLKDay
Thursday, January 21 National Hugging Day #NationalHuggingDay
Saturday, January 23 National Pie Day #PieDay
Sunday, January 24 National Compliment Day #NationalComplimentDay
Monday, January 25 Opposite Day #OppositeDay
Monday, January 25 Community Manager Appreciation Day #CMAD
Thursday, January 28 Data Privacy Day #PrivacyAware
Sunday, January 31 Backwards Day #BackwardsDay

January 2021 Calendar

January 2021 Calendar

February 2021 Social Media Holidays

Date Day Hashtag
Tuesday, February 2 Groundhog Day #GroundhogDay
Tuesday, February 2 World Wetlands Day #WorldWetlandsDay
Thursday, February 4 World Cancer Day #WorldCancerDay
Friday, February 5 National Weatherperson’s Day #NationalWeatherpersonsDay
Sunday, February 7 Superbowl LV #SuperbowlLV
Sunday, February 7 National Send a Card to a Friend Day #SendACardToAFriendDay
Monday, February 8 National Boy Scouts Day #BoyScoutsDay
Tuesday, February 9 National Pizza Day #NationalPizzaDay
Tuesday, February 9 Safer Internet Day #SID2019
Thursday, February 11 Inventors Day #InventorsDay
Friday, February 12 Chinese New Year #Chinesenewyear
Saturday, February 13 World Radio Day #WorldRadioDay
Sunday, February 14 Valentine’s Day #ValentinesDay
Monday, February 15 Presidents Day #PresidentsDay
Tuesday, February 16 Mardi Gras #MardiGras
Wednesday, February 17 Random Acts of Kindness Day #RandomActsOfKindnessDay
Thursday, February 18 National Battery Day #NationalBatteryDay
Saturday, February 20 World Day of Social Justice #SocialJusticeDay
Saturday, February 20 Love Your Pet Day #LoveYourPetDay
Sunday, February 21 International Mother Language Day #IMLD

February 2021 Calendar

February 2021 Calendar

March 2021 Social Media Holidays

Date Day Hashtag
Tuesday, March 2 National Read Across America Day #ReadAcrossAmerica &
Wednesday, March 3 World Wildlife Day #WorldWildlifeDay
Thursday, March 4 National Grammar Day #NationalGrammarDay
Thursday, March 4 National Pancake Day #NationalPancakeDay
Friday, March 5 National Employee Appreciation Day #EmployeeAppreciationDay
Friday, March 5 National Day of Unplugging #NationalDayOfUnplugging
Saturday, March 6 National Dentist’s Day #DentistsDay
Sunday, March 7 National Cereal Day #NationalCerealDay
Monday, March 8 International Women’s Day #BeBoldForChange
Monday, March 8 National Proofreading Day #NationalProofreadingDay
Wednesday, March 10 National Pack Your Lunch Day #NationalPackYourLunchDay
Thursday, March 11 National Worship of Tools Day #WorshipOfToolsDay
Friday, March 12 National Girl Scout Day #GirlScoutDay
Sunday, March 14 Daylight Savings #DaylightSavings
Sunday, March 14 Potato Chip Day #NationalPotatoChipDay
Sunday, March 14 Pi Day #PiDay
Monday, March 15 National Napping Day #NationalNappingDay
Monday, March 15 World Consumer Rights Day #WCRD2019
Tuesday, March 16 National Freedom of Information Day #FreedomOfInformationDay
Wednesday, March 17 St. Patrick’s Day #StPatricksDay
Thursday, March 18 Awkward Moments Day #NationalAwkwardMomentsDay
Friday, March 19 National Let’s Laugh Day #NationalLetsLaughDay
Saturday, March 20 First Day of Spring #FirstDayofSpring
Saturday, March 20 International Day of Happiness #InternationalDayofHappiness
Saturday, March 20 World Storytelling Day #WorldStorytellingDay
Monday, March 22 World Water Day #WorldWaterDay
Tuesday, March 23 National Puppy Day #NationalPuppyDay
Tuesday, March 23 American Diabetes Association Alert Day #AmericanDiabetesAssociationAlertDay
Friday, March 26 National Spinach Day #NationalSpinachDay
Friday, March 26 Purple Day #PurpleDay
Saturday, March 27 Earth Hour Day #EarthHour
Tuesday, March 30 Doctor’s Day #NationalDoctorsDay
Wednesday, March 31 World Backup Day #WorldBackupDay
Wednesday, March 31 Transgender Day of Visibility #TDOV
Wednesday, March 31 Equal Pay Day #EqualPayDay

March 2021 Calendar

March 2021 Calendar

April 2021 Social Media Holidays

Date Day Hashtag
Thursday, April 1 April Fools Day #AprilFools
Thursday, April 1 National Walking Day #NationalWalkingDay
Friday, April 2 World Autism Awareness Day #WAAD
Saturday, April 3 Find a Rainbow Day #FindARainbowDay
Sunday, April 4 Hug a Newsperson Day #HugANewsperson
Wednesday, April 7 World Health Day #LetsTalk
Saturday, April 10 National Siblings Day #NationalSiblingsDay
Saturday, April 10 Encourage a Young Writer Day #EncourageAYoungWriterDay
Sunday, April 11 National Pet Day #NationalPetDay
Monday, April 12 Human Space Flight Day #HumanSpaceFlightDay
Thursday, April 15 National Tax Day #TaxDay
Thursday, April 15 Get to Know Your Customers Day #GetToKnowYourCustomersDay
Friday, April 16 National Stress Awareness Day #StressAwarenessDay
Friday, April 16 Wear Your Pajamas to Work Day #PJDay
Friday, April 16 National High-Five Day #NH5D
Saturday, April 17 Haiku Poetry Day #HaikuPoetryDay
Tuesday, April 20 National Look-Alike Day #NationalLookAlikeDay
Wednesday, April 21 National Administrative Professionals Day #AdministrativeProfessionalsDay
Thursday, April 22 Earth Day #EarthDay2018
Thursday, April 22 Take Our Daughters & Sons to Work Day #COUNTONME
Friday, April 23 National Picnic Day #NationalPicnicDay
Friday, April 23 World Book Day #WorldBookDay
Sunday, April 25 National Telephone Day #NationalTelephoneDay
Sunday, April 25 World Malaria Day #EndMalariaForGood
Monday, April 26 Arbor Day #ArborDay
Wednesday, April 28 Denim Day #DenimDay
Thursday, April 29 International Dance Day #InternationalDanceDay
Friday, April 30 National Honesty Day #NationalHonestyDay
Friday, April 30 National Adopt a Shelter Pet Day #AdoptAShelterPetDay
Friday, April 30 International Jazz Day #JazzDay

April 2021 Calendar

April 2021 Calendar

May 2021 Social Media Holidays

Date Day Hashtag
Saturday, May 1 International Workers Day #IntWorkersDay
Saturday, May 1 May Day #MayDay
Monday, May 3 World Press Freedom Day #WPFD2019
Tuesday, May 4 International Firefighters Day #InternationalFirefightersDay
Tuesday, May 4 Thank a Teacher Day #ThankATeacher
Tuesday, May 4 Star Wars Day #StarWarsDay
Wednesday, May 5 Cinco de Mayo #CincoDeMayo
Thursday, May 6 National Nurses Day #NursesDay
Friday, May 7 Space Day #SpaceDay
Friday, May 7 World Password Day #WorldPasswordDay
Sunday, May 9 Europe Day #EuropeDay
Sunday, May 9 Mother’s Day #MothersDay
Wednesday, May 12 National Limerick Day #NationalLimerickDay
Wednesday, May 12 National Receptionist Day #NationalReceptionistDay
Saturday, May 15 International Day of Families #FamilyDay
Sunday, May 16 Love a Tree Day #LoveATreeDay
Monday, May 17 Day Against Homophobia & Transphobia #IDAHOT2021
Friday, May 21 National Bike to Work Day #BTWD
Friday, May 21 Endangered Species Day #EndangeredSpeciesDay
Friday, May 21 National Memo Day #NationalMemoDay
Monday, May 24 National Scavenger Hunt Day #NationalScavengerHuntDay
Friday, May 28 Heat Awareness Day #NoFryDay
Friday, May 28 Hamburger Day #NationalHamburgerDay
Saturday, May 29 Paperclip Day #PaperclipDay
Monday, May 31 Memorial Day #MemorialDay
Monday, May 31 World No-Tobacco Day #NoTobacco

May 2021 Calendar

May 2021 Calendar

June 2021 Social Media Holidays

Date Day Hashtag
Tuesday, June 1 International Childrens Day #ChildrensDay
Wednesday, June 2 Leave The Office Early Day #LeaveTheOfficeEarlyDay
Friday, June 4 National Donut Day #NationalDonutDay
Saturday, June 5 World Environment Day #WorldEnvironmentDay
Sunday, June 6 Higher Education Day #HigherEducationDay
Sunday, June 6 National Cancer Survivors Day #NCSD2021
Tuesday, June 8 World Oceans Day #WorldOceansDay
Tuesday, June 8 Best Friends Day #BestFriendsDay
Monday, June 14 World Blood Donor Day #GiveBlood
Monday, June 14 National Flag Day #FlagDay
Sunday, June 20 World Refugee Day #WithRefugees
Sunday, June 20 Fathers Day #FathersDay
Monday, June 21 First Day of Summer #FirstDayOfSummer
Monday, June 21 National Selfie Day #NationalSelfieDay
Monday, June 21 World Music Day #WorldMusicDay
Monday, June 21 International Yoga Day #InternationalYogaDay
Thursday, June 24 National Handshake Day #HandshakeDay
Friday, June 25 Take Your Dog to Work Day #TakeYourDogToWorkDay
Sunday, June 27 National Sunglasses Day #NationalSunglassesDay
Wednesday, June 30 Social Media Day #SMDay

June 2021 Calendar

June 2021 Calendar

July 2021 Social Media Holidays

Date Day Hashtag
Thursday, July 1 International Joke Day #InternationalJokeDay
Thursday, July 1 National Postal Worker Day #PostalWorkerDay
Friday, July 2 World UFO Day #WorldUFODay
Sunday, July 4 Independence Day #July4th
Wednesday, July 7 World Chocolate Day #WorldChocolateDay
Sunday, July 11 National Cheer Up the Lonely Day #CheerUpTheLonely
Monday, July 12 Malala Day #MalalaDay
Thursday, July 15 Give Something Away Day #GiveSomethingAwayDay
Thursday, July 15 Get to Know Your Customers Day #GetToKnowYourCustomersDay
Saturday, July 17 World Emoji Day #WorldEmojiDay
Sunday, July 18 Nelson Mandela International Day #MandelaDay
Tuesday, July 20 International Chess Day #ChessDay
Wednesday, July 28 World Hepatitis Day #HepatitisDay
Friday, July 30 International Day of Friendship #DayOfFriendship
Friday, July 30 Talk in an Elevator Day #TalkInAnElevatorDay

July 2021 Calendar

July 2021 Calendar

August 2021 Social Media Holidays

Date Day Hashtag
Sunday, August 1 Respect for Parents Day #RespectForParentsDay
Monday, August 2 National Coloring Book Day #NationalColoringBookDay
Friday, August 6 International Beer Day #BeerDay
Sunday, August 8 International Cat Day #InternationalCatDay
Monday, August 9 National Book Lovers Day #NationalBookLoversDay
Tuesday, August 10 National Lazy Day #LazyDay
Wednesday, August 11 National Sons and Daughters Day #SonsAndDaughtersDay
Thursday, August 12 International Youth Day #YouthDay
Wednesday, August 12 World Elephant Day #WorldElephantDay
Friday, August 13 International Lefthanders Day #LefthandersDay
Sunday, August 15 National Relaxation Day #NationalRelaxationDay
Monday, August 16 National Tell a Joke Day #NationalTellAJokeDay
Thursday, August 19 World Photo Day #WorldPhotoDay
Thursday, August 19 World Humanitarian Day #WorldHumanitarianDay
Friday, August 20 National Lemonade Day #NationalLemonadeDay
Saturday, August 21 World Entrepreneurs Day #EntrepreneursDay
Thursday, August 26 National Dog Day #NationalDogDay
Thursday, August 26 National Women’s Equality Day #WomensEqualityDay

August 2021 Calendar

August 2021 Calendar

September 2021 Social Media Holidays

Date Day Hashtag
Sunday, September 5 International Day of Charity #CharityDay
Monday, September 6 Read a Book Day #ReadABookDay
Monday, September 6 Labor Day #LaborDay
Monday, September 6 National Grandparents Day #NationalGrandparentsDay
Wednesday, September 8 International Literacy Day #LiteracyDay
Friday, September 10 Stand Up To Cancer Day #KissCancerGoodbye
Friday, September 11 National Day of Service and Remembrance #911Day
Sunday, September 12 National Day of Encouragement #DayOfEncouragement
Sunday, September 12 National Video Games Day #NationalVideoGamesDay
Sunday, September 12 Civic Day of Hacking #HackForChange
Sunday, September 19 Talk Like a Pirate Day #TalkLikeAPirateDay
Tuesday, September 21 International Day of Peace #PeaceDay
Wednesday, September 22 Car-Free Day #CarFreeDay
Wednesday, September 22 Hobbit Day #HobbitDay
Wednesday, September 22 First Day of Fall #1stDayOfFall
Sunday, September 26 European Day of Languages #EDL2019
Monday, September 27 World Tourism Day #WTD2019
Tuesday, September 28 World Rabies Day #WorldRabiesDay
Tuesday, September 28 National Good Neighbor Day #GoodNeighborDay
Thursday, September 30 International Podcast Day #InternationalPodcastDay

September 2021 Calendar

September 2021 Calendar

October 2021 Social Media Holidays

Date Day Hashtag
Friday, October 1 International Day of Older Persons #UNDOP
Saturday, October 2 Day of Nonviolence #InternationalDayOfNonviolence
Sunday, October 3 National Techies Day #TechiesDay
Monday, October 4 World Animal Day #WorldAnimalDay
Monday, October 4 National Taco Day #NationalTacoDay
Tuesday, October 5 World Habitat Day #WorldHabitatDay
Tuesday, October 5 World Teachers Day #WorldTeachersDay
Sunday, October 10 World Mental Health Day #WorldMentalHeathDay
Monday, October 11 International Day of the Girl #DayOfTheGirl
Thursday, October 14 World Sight Day #WorldSightDay
Thursday, October 14 National Dessert Day #DessertDay
Friday, October 15 Global Handwashing Day #GlobalHandwashingDay
Friday, October 15 Bosses Day #BossesDay
Saturday, October 16 World Food Day #FoodDay
Sunday, October 17 Eradication of Poverty Day #EndPoverty
Thursday, October 21 Reptile Awareness Day #ReptileAwarenessDay
Sunday, October 24 United Nations Day #UNDay
Monday, October 25 Greasy Foods Day #GreasyFoodsDay
Saturday, October 30 National Publicist Day #NationalPublicistDay
Saturday, October 30 Checklist Day #ChecklistDay
Sunday, October 31 Halloween #Halloween

October 2021 Calendar

October 2021 Calendar

November 2021 Social Media Holidays

Date Day Hashtag
Monday, November 1 World Vegan Day #WorldVeganDay
Monday, November 1 National Authors Day #NationalAuthorsDay
Monday, November 1 National Cook For Your Pets Day #CookForYourPetsDay
Wednesday, November 3 National Sandwich Day #NationalSandwichDay
Thursday, November 4 National Candy Day #NationalCandyDay
Sunday, November 7 Daylight Saving Time Ends #DaylightSavings
Monday, November 8 National Cappuccino Day #CappuccinoDay
Monday, November 8 STEM Day #STEMDay
Thursday, November 11 Veterans Day #VeteransDay
Saturday, November 13 World Kindness Day #WKD
Sunday, November 14 World Diabetes Day #WDD
Monday, November 15 Clean Out Your Refrigerator Day #CleanOutYourRefrigeratorDay
Monday, November 15 America Recycles Day #BeRecycled
Tuesday, November 16 International Day for Tolerance #ToleranceDay
Wednesday, November 17 International Students Day #InternationalStudentsDay
Friday, November 19 International Men’s Day #InternationalMensDay
Saturday, November 20 World Children’s Day #UNChildrensDay
Sunday, November 21 World Hello Day #WorldHelloDay
Thursday, November 25 Thanksgiving Day #Thanksgiving
Friday, November 26 National Cake Day #NationalCakeDay
Friday, November 26 National Day of Listening #DayOfListening
Saturday, November 27 Small Business Saturday #ShopSmall
Monday, November 29 Electronic Greeting Card Day #ElectronicGreetingCardDay
Monday, November 29 Cyber Monday #CyberMonday
Tuesday, November 30 Computer Security Day #ComputerSecurityDay

November 2021 Calendar

November 2021 Calendar

December 2021 Social Media Holidays

Date Day Hashtag
Wednesday, December 1 World AIDS Day #WAD2019
Friday, December 3 Persons with Disabilities Day #IDPWD
Saturday, December 4 National Cookie Day #NationalCookieDay
Sunday, December 5 World Soil Day #WorldSoilDay
Monday, December 6 Microwave Oven Day #MicrowaveOvenDay
Friday, December 10 Human Rights Day #HumanRightsDay
Friday, December 10 Nobel Prize Day #NobelPrize
Saturday, December 11 International Mountain Day #InternationalMountainDay
Tuesday, December 21 Crossword Puzzle Day #CrosswordPuzzleDay
Tuesday, December 21 First Day of Winter #WinterSolstice
Friday, December 31 No Interruptions Day #NoInterruptionsDay
Friday, December 31 New Year’s Eve #NYE

December 2021 Calendar

December 2021 Calendar