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.
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
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
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
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
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
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
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
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
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
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
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
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
