14 Social Media Holidays to Celebrate This September

With fall approaching, September offers key holidays and events to plan in your social media calendar and boost your engagement.  

We've curated a list of the top holidays to inspire your content and connect with your audience. Let’s explore how to leverage these occasions, complete with brand examples for your strategy. 

• September 1. World Letter Writing Day #WorldLetterWritingDay 
• September 1. Labor Day #LaborDay 
• September 5. International Day of Charity #CharityDay 
• September 5. National Lazy Mom’s Day #NationalLazyMomsDay 
• September 6. Read a Book Day #ReadABookDay 
• September 8. International Literacy Day #LiteracyDay 
• September 11. National Day of Service and Remembrance #PatriotDay 
• September 12. National Video Games Day #NationalVideoGamesDay 
• September 18. International Equal Pay Day #EqualPayDay  
• September 21. International Day of Peace #PeaceDay 
• September 22. Hobbit Day #HobbitDay 
• September 22. First Day of Fall #FirstDayOfFall 
• September 27. World Tourism Day #WorldTourismDay 
• September 30. International Podcast Day #InternationalPodcastDay 

These holidays are prime opportunities to engage your audience on social media. See how other brands are celebrating and learn how to elevate your upcoming campaigns. 

Key Takeaway 

The month of September is all about art and entertainment, from reading related celebrations to video games and film.  

September 1. World Letter Writing Day #WorldLetterWritingDay

When social media took over, one form of communication almost died out: the letter. Kick off the month by celebrating the medium that has connected people far apart for hundreds of years.  

This is a great day to evoke nostalgia for letter writing, share interesting facts, or even promote products that enhance your customers' letter-writing experience. 

Content idea: Share a handwritten letter on social media centered around a chosen topic and encourage your audience to write and share a letter on the topic as well. 

September 1. Labor Day #LaborDay

Celebrated on the first Monday in September, Labor Day honors the American labor movement and its social and economic achievements. It's an excellent opportunity for companies to recognize their employees and their contributions. 

Content idea: Share a behind-the-scenes look into your organization or interesting facts about the history of labor in America. 

September 5. International Day of Charity #CharityDay

Declared by the United Nations General Assembly in 2012, the International Day of Charity shines a spotlight on all the humanitarian work and NGOs that make the world a better place.   

Content idea: Raise awareness by posting about the actions your brand is taking or encouraging your followers to support charities and their work. 

September 5. National Lazy Mom’s Day #NationalLazyMomsDay

National Lazy Mom's Day is celebrated on the first Friday in September. Moms all over the world are incredibly hard workers who often don't get enough time to themselves. This day is meant to recognize their efforts and give them a well-deserved break to recharge.  

Content idea: Share a heartfelt message of appreciation, tips for a relaxed Lazy Mom's Day, or ask your followers how they plan to spend the day. 

September 6. Read a Book Day #ReadABookDay

Read a Book Day is all about the world of books and the joy of reading.  

Content idea: Ask your followers what they’re reading these days, post an inspiring quote, give book recommendations, or promote products that readers will love. 

September 8. International Literacy Day #LiteracyDay

International Literacy Day was established in 1967 by UNESCO. It's a day to remember the importance of literacy for individuals and society as a whole and spread awareness about education. 

Content idea: Post an infographic about literacy rates or history globally. 

September 11. National Day of Service and Remembrance #PatriotDay

On September 11, people across the USA and beyond remember the catastrophe of September 11, 2001, and its aftermath. This day is dedicated to remembering the lives lost in the terrorist attack, honoring all the responders who put their lives on the line to save someone else’s.  

Content idea: Post some unknown facts about 9/11 or share photos to commemorate the day. 

September 12. National Video Games Day #NationalVideoGamesDay

National Video Games Day is a celebration of all things gaming, making it a key date for both gamers and developers. To tap into this excitement, take on activities that can create buzz and deepen engagement with your gaming community, helping your brand connect with enthusiasts on a more personal level. 

Content idea: Consider hosting contests, sharing cosplay highlights, or posting fun, interactive videos. 

September 18. International Equal Pay Day #EqualPayDay

September 18 marks International Equal Pay Day, a day dedicated to raising awareness about the persistent gender pay gap and the ongoing fight for pay equity. 

Content idea: Use #EqualPayDay in your online content to show your support for fair wages and highlight the significance of equal pay in building a more inclusive workplace. 

September 21. International Day of Peace #PeaceDay

The International Day of Peace, also known as World Peace Day, is a United Nations holiday that highlights the importance of peace and actions to strengthen it. This event offers a great opportunity for brands to educate their followers, give experts a voice, or raise awareness for charities. 

Content idea: Go live on Instagram with an expert in the field. 

September 22. Hobbit Day #HobbitDay

Hobbit Day celebrates the birthdays of Frodo and Bilbo, beloved characters from Tolkien’s Lord of the Rings. It’s a perfect occasion to engage with fans of the series. 

Content idea: Celebrate with your audience by posting themed content, such as creative visuals, fan art, or a tribute to the enduring legacy of Middle-earth. 

September 22. First Day of Fall #FirstDayOfFall

Fall is here, and it's time to get cozy. There's a lot to look forward to this season, and brands have the chance to use this day to get their followers excited about what’s to come.  

Content idea: Celebrate the day by sharing pumpkin recipes, cozy movie recommendations, or the perfect outfit for a mushroom hunt in the woods. 

September 27. World Tourism Day #WorldTourismDay

World Tourism Day celebrates the joy of travel while highlighting key issues in the industry, such as sustainability. This year’s theme, "Tourism and Sustainable Transformation," underscores the role of travel in fostering global harmony.  

Highlight how travel can bridge cultures and bring people together and encourage your audience to embrace travel as a way to support global peace. 

Content idea: Shortlist some sustainable tourist destinations. 

September 30. International Podcast Day #InternationalPodcastDay

This holiday has celebrated the popularity of podcasts since 2014. It presents the perfect opportunity to promote your brand's podcast or provide your followers with a curated list of interesting podcasts to listen to.  

Content idea: Post about your favorite podcast and why or share your company’s podcast if you have one. 

That’s a wrap

It’s time to infuse your content strategy with social media holidays to boost your online engagement.  

Check out our Social Media Holiday Calendar 2025 for further insights If you're on the lookout for more ways to spice up your brand’s social media content.