Social Media Calendar 2021 | Key Marketing Dates (UK) + Hashtags

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The social media calendar 2021 is here! Get your key marketing dates and hashtags to boost your content creation this year.

From random fun ideas like Croissant Day, to more serious matters like World Mental Health Day.

Don’t forget when Black Friday is this year, so you can plan accordingly!

Social Media Calendar 2021 Marketing Dates UK

Whether you’re looking for inspiration for your Instagram posts or need to create content on your blog, you’ve come to the right place.

Get inspired for each month of the year 2021 with lots of key dates that you can plan your content around or use to build your community.

I have included key marketing dates and holiday calendar for the UK, as well as some US ones that are still relevant.

You will also find the Instagram hashtags to use for each of these holidays. For some of these, there are multiple hashtags that you can use.

Why do I need a Social Media Calendar?

You might be wondering if you would even need a social media calendar at all.

Quick answer: yes, you do!

A social media content calendar will not only help you create useful and relevant content, but it will also keep you motivated and accountable for each month of the year.

Here are a few reasons why you need to use a social media calendar for your content strategy:

1. Content ideas for when you’re stuck

We all get to that point in our content creation journey where we get a bit stuck. We feel like either we’re being repetitive with our content (which is not always a bad thing if done right).

Or we might just be completely out of ideas.

Psst. I also wrote about 45 Instagram Stories Ideas if you need more inspo. Or maybe you need help knowing what, when and how to post on Instagram.

This is where the marketing holidays calendar will come in handy.

You obviously won’t want to celebrate or bring awareness to ALL of these social media holidays. But you can go through each month and pick the ones that are relevant to you or your niche.

This will make creating content easier.

It might also spark some post ideas you might not have thought of otherwise.

2. Pitch to brands for campaigns

Here’s one thing that is not often talked about. Brands create their influencer campaigns around major (or sometimes small) holidays.

You can better leverage your content creation skills if you show that you really understand your audience. And you have a specific content plan in mind.

So rather than writing emails saying: “Hi, let’s collaborate”.

Which – spoiler! – will most likely not get you a response back.

Instead, write an email along the lines of: “Hi, I am planning an Easter Day activity ideas for kids and I think your product would be a great feature in it. If you have any influencer campaigns around Easter Day, I would love to help out.”

Of course, maybe elaborate that email – I just wrote the gist.

But you get my point.

This type of email will make you look more professional. And it will show you know what you’re on about. Brands appreciate that.

3. Community feel

You can also use the social media calendar to bring awareness to a cause that is close to your heart. It can help build that community feel in your audience.

By using the right hashtags, you can also bring in more followers that are like-minded and have similar values to you.

And that is exactly what you want in your followers – people who are actually interested in what you have to say.

Social media content calendar 2021 UK Key Marketing Dates

How to use the Social Media Calendar 2021

Included in this social media calendar for 2021 you will find up-to-date holidays that you can jot down in your own calendars.

I recommend bookmarking this page so you can come back to it when you plan your content for each month, so you don’t miss anything.

Then go through the days of the month and see which holidays apply to you, your business or your niche.

A content calendar will help you immensely to stay organised and motivated. And it also keeps you accountable to make sure you get things done each month.

So create your strategy for 2021 around this marketing calendar and you will surely see growth in either you blog or your Instagram, or just your social media business in general.

Social Media Content Calendar 2021 | Key Marketing Dates

The social media content calendar for 2021 below is organised by month and then by day. Some days will have more than one social media holiday – obviously you only pick the ones that suit your niche.

JANUARY

January 1. New Year’s Day #NewYearsDay

January 2. Science Fiction Day #ScienceFictionDay, World Introvert Day #WorldIntrovertDay

January 4. National Trivia Day #NationalTriviaDay

January 5. National Bird Day #NationalBirdDay

January 6. National Technology Day #NationalTechnologyDay, National Shortbread Day #NationalShortbreadDay

January 8. Bubble Bath Day #BubbleBathDay

January 10. Houseplant Appreciation Day #HouseplantAppreciationDay

January 11. Human Trafficking Awareness Day #HumanTraffickingDay

January 13. Clean Off Your Desk Day #CleanOffYourDeskDay, National Sticker Day #NationalStickerDay

January 14. Dress Up Your Pet Day #DressUpYourPetDay

January 15. National Hat Day #NationalHatDay

January 18. Blue Monday #BlueMonday

January 19. Popcorn Day #PopcornDay

January 20. Cheese Lovers’ Day #CheeseLoversDay

January 21. Hugging Day #HuggingDay

January 24. Compliment Day #NationalComplimentDay

January 25. Opposite Day #OppositeDay

January 27. Chocolate Cake Day #ChocolateCakeDay

January 28. Data Privacy Day #DataPrivacyDay

January 29. Puzzle Day #PuzzleDay

January 30. Croissant Day #CroissantDay

January 31. Grammy Awards #GrammyAwards

FEBRUARY

February 2. Groundhog Day #GroundhogDay, World Wetlands Day #WorldWetlandsDay

February 4. World Cancer Day #WorldCancerDay

February 5. World Nutella Day #WorldNutellaDay

February 6. Beginning of Six Nations #SixNations

February 7. Send a Card to a Friend Day #SendACardToAFriendDay

February 9. National Pizza Day #NationalPizzaDay

February 11. Safer Internet Day #SID2021, National Inventors’ Day #NationalInventorsDay

February 12. Chinese New Year #ChineseNewYear

February 13. World Radio Day #WorldRadioDay

February 14. Valentine’s Day #ValentinesDay

February 15. Singles Awareness Day #SinglesAwarenessDay

February 16. Pancake Day #PancakeDay

February 17. Random Acts of Kindness Day #RandomActsOfKindnessDay

February 20. Love Your Pet Day #LoveYourPetDay, World Day of Social Justice #SocialJusticeDay

February 21. International Mother Language Day #MotherLanguageDay

February 25. Digital Learning Day #DigitalLearningDay

February 28. Golden Globes 2021 #GoldenGlobes

Social media content calendar 2021 UK Key Marketing Dates

MARCH

March 2. National Read Across America Day #ReadAcrossAmerica

March 3. World Wildlife Day #WorldWildlifeDay

March 4. World Book Day #WorldBookDay, National Grammar Day #NationalGrammarDay

March 5. Employee Appreciation Day #EmployeeAppreciationDay, National Day of Unplugging #NationalDayOfUnplugging

March 6. Dentist’s Day #DentistsDay

March 7. National Cereal Day #NationalCerealDay

March 8. International Women’s Day #InternationalWomensDay

March 9. National Napping Day #NationalNappingDay

March 14. Mother’s Day #MothersDay

March 15. World Consumer Rights Day #WorldConsumerRightsDay

March 17. St. Patrick’s Day #StPatricksDay

March 19. Red Nose Day #RedNoseDay, Sleep Day #WorldSleepDay

March 20. International Day of Happiness #InternationalDayofHappiness, First Day of Spring #FirstDayofSpring

March 21. World Poetry Day #WorldPoetryDay

March 22. World Water Day #WorldWaterDay

March 23. National Puppy Day #NationalPuppyDay

March 25. International Waffle Day #InternationalWaffleDay

March 26. Purple Day #PurpleDay

March 27. Earth Hour Day #EarthHour

March 28. Daylight Saving Time #DaylightSavingTime

March 30. Doctor’s Day #NationalDoctorsDay

March 31. World Backup Day #WorldBackupDay

APRIL

April 1. April Fools’ Day #AprilFoolsDay, National Walking Day #NationalWalkingDay

April 2. World Autism Awareness Day #WorldAutismAwarenessDay, Good Friday #GoodFriday

April 3. Find a Rainbow Day #FindARainbowDay

April 4. Easter Sunday #EasterSunday

April 5. Easter Monday #EasterMonday

April 7. World Health Day #WorldHealthDay

April 10. The Grand National #TheGrandNational, Siblings Day #NationalSiblingsDay

April 11. National Pet Day #NationalPetDay

April 12. Ramadan begins #Ramadan2021, International Day of Human Space Flight #InternationalDayOfHumanSpaceFlight

April 13. Equal Pay Day #EqualPayDay

April 15. Tax Day #TaxDay

April 16. Stress Awareness Day #StressAwarenessDay

April 19. Bicycle Day #BicycleDay

April 20. Look Alike Day #NationalLookAlikeDay

April 21. National Tea Day #NationalTeaDay, Queen Elizabeth’s Birthday #QueensBirthday

April 22. Earth Day #EarthDay2021

April 23. World Book Day #WorldBookDay

April 25. The Oscars Academy Awards #Oscars2021, World Malaria Day #WorldMalariaDay

April 26. Arbor Day #ArborDay

April 29. International Dance Day #InternationalDanceDay

April 30. International Jazz Day #JazzDay

Social media content calendar 2021 UK Key Marketing Dates

MAY

May 1. May Day #MayDay, International Workers Day #InternationalWorkersDay

May 3. Early May Bank Holiday #MayBankHoliday, World Press Freedom Day #WorldPressFreedomDay

May 4. Star Wars Day #Maythe4thBeWithYou #StarWarsDay, International Firefighters Day #InternationalFirefightersDay

May 5. Cinco de Mayo #CincoDeMayo, Thank a Teacher Day #ThankATeacher

May 6. World Password Day #WorldPasswordDay

May 7. Space Day #SpaceDay

May 9. Europe Day #EuropeDay

May 11. National Eat What You Want Day #NationalEatWhatYouWantDay

May 13. World Cocktail Day #WorldCocktailDay

May 15. International Day of Families #InternationalDayofFamilies, Endangered Species Day #EndangeredSpeciesDay

May 16. Love a Tree Day #LoveATreeDay, International Day of Light #InternationalDayofLight

May 17. International Day Against Homophobia and Transphobia #IDAHOT, World Baking Day #WorldBakingDay

May 18. National Museum Day #MuseumDay

May 20. World Bee Day #WorldBeeDay

May 21. National Memo Day #NationalMemoDay

May 28. World Hunger Day #WorldHungerDay

May 29. National Paperclip Day #NationalPaperclipDay, National Biscuit Day #NationalBiscuitDay

May 30. National Creativity Day #NationalCreativityDay

May 31. Spring Bank Holiday #SpringBankHoliday, World No-Tobacco Day #NoTobacco

JUNE

June 1. Global Day of Parents #GlobalDayOfParents, International Children’s Day #InternationalChildrensDay

June 2. Leave The Office Early Day #LeaveTheOfficeEarlyDay

June 3. National Fish and Chip Day #NationalFishAndChipDay

June 4. National Donut Day #NationalDonutDay

June 5. World Environment Day #WorldEnvironmentDay

June 6. National Cancer Survivor’s Day #NationalCancerSurvivorsDay

June 7. Chocolate Ice Cream Day #ChocolateIceCreamDay

June 8. World Oceans Day #WorldOceansDay, Best Friends Day #BestFriendsDay

June 10. Iced Tea Day #IcedTeaDay

June 11. European Championship start #EuropeanChampionship

June 12. Queen’s Birthday #QueensBirthday

June 14. World Blood Donor Day #WorldBloodDonorDay

June 15. National Beer Day #NationalBeerDay

June 18. International Sushi Day #InternationalSushiDay

June 20. Father’s Day #FathersDay2021, First Day of Summer #FirstDayofSummer

June 21. National Selfie Day #NationalSelfieDay, World Music Day #WorldMusicDay, International Yoga Day #InternationalYogaDay

June 23. Women in Engineering Day #WomeninEngineering

June 25. National Cream Tea Day #NationalCreamTeaDay, Take Your Dog to Work Day #TakeYourDogToWorkDay

June 26. London Pride #LondonPride

June 27. National Sunglasses Day #NationalSunglassesDay

June 28. Wimbledon begins #Wimbledon2021

June 30. Social Media Day #SocialMediaDay

how to plan your instagram content with a content calendar

JULY

July 1. National Postal Worker Day #NationalPostalWorkerDay

July 2. World UFO Day #WorldUFODay

July 4. American Independence Day #IndependenceDay #4thofJuly

July 6. National Kissing Day #NationalKissingDay

July 7. World Chocolate Day #WorldChocolateDay

July 11. Cheer Up the Lonely Day #CheerUpTheLonelyDay, World Population Day #WorldPopulationDay

July 12. Simplicity Day #SimplicityDay, Malala Day #MalalaDay

July 14. Bastille Day #BastilleDay

July 15. Give Something Away Day #GiveSomethingAwayDay

July 17. World Emoji Day #WorldEmojiDay

July 18. Nelson Mandela International Day #MandelaDay

July 19. Ice Cream Day #NationalIceCreamDay

July 20. International Chess Day #InternationalChessDay

July 30. World Day Against Trafficking in Persons #EndHumanTrafficking, Day of Friendship #DayOfFriendship

AUGUST

August 1. Respect for Parents Day #RespectForParentsDay, Planner Day #PlannerDay, World Wide Web Day #WorldWideWebDay

August 2. Summer Bank Holiday #SummerBankHoliday, National Coloring Book Day #NationalColoringBookDay

August 6. International Beer Day #InternationalBeerDay

August 8. International Cat Day #InternationalCatDay

August 9. National Book Lovers Day #NationalBookLoversDay

August 10. National Lazy Day #NationalLazyDay, World Lion Day #WorldLionDay

August 12. International Youth Day #InternationalYouthDay, World Elephant Day #WorldElephantDay

August 13. International Left Handers Day #LeftHandersDay

August 15. National Relaxation Day #NationalRelaxationDay

August 16. National Tell a Joke Day #NationalTellAJokeDay

August 19. World Humanitarian Day #WorldHumanitarianDay

August 20. National Lemonade Day #NationalLemonadeDay

August 21. World Entrepreneurs Day #WorldEntrepreneursDay

August 26. National Women’s Equality Day #WomensEqualityDay, International Dog Day #InternationalDogDay

August 30. Summer Bank Holiday #SummerBankHoliday

planning content for instagram in calendar

SEPTEMBER

September 4. National Wildlife Day #NationalWildlifeDay, World Beard Day #WorldBeardDay

September 5. International Day of Charity #CharityDay, National Grandparents Day #NationalGrandparentsDay

September 6. Labor Day #LaborDay, Read a Book Day #ReadaBookDay

September 8. International Literacy Day #LiteracyDay

September 10. World Suicide Prevention Day #WorldSuicidePreventionDay

September 11. National Day of Service and Remembrance #911Day

September 12. National Day of Encouragement #DayOfEncouragement, National Video Games Day #NationalVideoGamesDay

September 13. Roald Dahl Day #RoaldDahlDay

September 15. Online Learning Day #OnlineLearningDay

September 16. 100 days until Christmas #100DaysUntilChristmas, Guacamole Day #NationalGuacamoleDay

September 18. National Cheeseburger Day #NationalCheeseburgerDay

September 19. Talk Like a Pirate Day #TalkLikeAPirateDay

September 21. International Day of Peace #PeaceDay

September 22. Car-Free Day #CarFreeDay, National Women’s Health and Fitness Day #FitnessDay, Autumn Equinox #AutumnEquinox #FirstDayofAutumn

September 26. European Day of Languages #EuropeanDayofLanguages

September 27. World Tourism Day #WorldTourismDay

September 28. National Good Neighbor Day #GoodNeighborDay

September 30. International Podcast Day #InternationalPodcastDay

OCTOBER

October 1. International Coffee Day #InternationalCoffeeDay, World Vegetarian Day #WorldVegetarianDay

October 2. International Day of Nonviolence #InternationalDayOfNonviolence, World Smile Day #WorldSmileDay

October 3. National Techies Day #TechiesDay

October 4. World Animal Day #WorldAnimalDay, National Taco Day #NationalTacoDay, World Teachers Day #WorldTeachersDay, World Habitat Day #WorldHabitatDay

October 10. World Mental Health Day #WorldMentalHealthDay

October 11. International Day of the Girl #DayOfTheGirl

October 14. National Dessert Day #NationalDessertDay, World Sight Day #WorldSightDay

October 15. Global Handwashing Day #GlobalHandwashingDay

October 16. World Food Day #WorldFoodDay

October 17. International Day for the Eradication of Poverty #EndPoverty

October 20. World Statistics Day #WorldStatisticsDay

October 24. United Nations Day #UNDay

October 25. World Pasta Day #WorldPastaDay

October 30. Checklist Day #ChecklistDay

October 31. Halloween #Halloween2021, Daylight Saving Time

yellow calendar for planning content

NOVEMBER

November 1. World Vegan Day #WorldVeganDay, National Authors Day #NationalAuthorsDay

November 3. National Sandwich Day #NationalSandwichDay, International Stress Awareness Day #StressAwarenessDay

November 4. Diwali #Diwali2021, National Candy Day #NationalCandyDay

November 5. Bonfire Night #BonfireNight

November 8. National Cappuccino Day #NationalCappuccinoDay, Science, Technology, Engineering, and Medicine (STEM) Day #STEMDay

November 11. Remembrance Day #RemembranceDay

November 13. World Kindness Day #WorldKindnessDay

November 14. Remembrance Sunday #RemembranceSunday

November 15. Clean Out Your Refrigerator Day #CleanOutYourRefrigeratorDay

November 16. International Day for Tolerance #ToleranceDay, National Entrepreneurs Day #EntrepreneursDay

November 17. International Students Day #InternationalStudentsDay

November 19. International Men’s Day #InternationalMensDay

November 20. Universal Children’s Day #UniversalChildrensDay

November 21. World Hello Day #WorldHelloDay

November 25. Thanksgiving Day (US) #Thanksgiving2021

November 26. Black Friday #BlackFriday2021

November 27. Small Business Saturday (The last Saturday of November) #ShopSmall

November 29. Cyber Monday #CyberMonday2021

November 30. Computer Security Day #ComputerSecurityDay

DECEMBER

December 1. World AIDS Day #WorldAidsDay

December 3. International Day of Persons with Disabilities #IDPWD

December 4. National Cookie Day #NationalCookieDay

December 5. World Soil Day #WorldSoilDay

December 6. St Nicholas Day #StNicholasDay

December 9. Christmas Card Day #ChristmasCardDay

December 10. Human Rights Day #HumanRightsDay, Nobel Prize Day #NobelPrize, International Animal Rights Day #InternationalAnimalRightsDay

December 11. International Mountain Day #InternationalMountainDay

December 14. Christmas Jumper Day #ChristmasJumperDay

December 21. First Day of Winter #WinterSolstice #FirstDayofWinter

December 24. Christmas Eve #ChristmasEve2021

December 25. Christmas Day #ChristmasDay2021

December 26. Boxing Day #BoxingDay2021

December 31. New Year’s Eve #NewYearsEve2021

I hope the Social Media Calendar 2021 was useful!

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