Summer has flown by, but September brings a fresh start! Often called the “second January,” this first month of fall is prime time to get back on track and reach for your goals, both personal and business-related.
We hope you enjoyed some downtime this summer, but we’re also excited to see your stellar social media marketing plans come to life this September. Feeling a little lost on where to focus? Don’t worry, we’ve got your back!
This year’s September Social Media Holiday Calendar is packed with relevant holidays perfect for your specific niche. Plan ahead, schedule with Publer, and dominate your social media presence this fall.
Why You Need a Social Media Holiday Calendar
Using a Social Media Holiday Calendar as a guide to September trends can be a game-changer for your business. It’s the easiest way to plan content for fall, but here’s the real magic:
- Craft unique social media campaigns that go viral and attract new leads.
- Celebrate your amazing products or services on special days.
- Leverage trending holiday hashtags to boost reach and engagement.
- Support your favorite causes and build audience trust.
- Share important information about the holidays and your brand.
Effective social media asset management keeps everything organized and accessible when planning these campaigns. Feeling uninspired? Simply spark a new post based on a holiday relevant to your niche.
Publer’s Free Social Media Holiday Interactive Calendar
Looking for an easier way to stay on top of social media holidays? Check out Publer’s Social Media Holiday Interactive Calendar! This free tool lists hundreds of holidays with their corresponding hashtags, making it simple to discover, plan, and schedule engaging content.
Visit Publer’s Social Media Holiday Calendar to explore these holidays, craft posts, and schedule them directly to your socials. With this tool, creating timely, relevant content has never been easier.
Top Dates to Remember in September 2025
International Day of Charity – September 5
Pick a cause you are passionate about and let your audience know more about it! The International Charity Day is the perfect opportunity to get heard through trending hashtags, and to educate using valuable information on your dearest causes. It is the perfect day to also share your favorite quotes about helping those in need and remembering Mother Teresa.
International Literacy Day – September 8
This year’s #LiteracyDay will be celebrated worldwide under the theme, “Promoting multilingual education: Literacy for mutual understanding and peace” and its focus will be empowering people by adopting a first language-based, multilingual approach to literacy development and education
You can start by informing your social audience on the importance of literacy, and you can even expand the theme by taking advantage of other holidays that anticipate International Literacy Day, such as #WorldLetterWritingDay (September 1), #CollegeColorsDay (September 2), #ReadABookDay (September 6), and #BuyABookDay (September 7).
World Tourism Day – September 27
#WorldTourismDay can be a great opportunity for local agencies to showcase their top offers.
This year’s theme “Tourism, Justice, and Peace” places tourism at the nexus of justice and peace, urging a deep and reflective examination of tourism’s influence on migration, social equity, climate justice, diplomacy, and cultural preservation – among other topics.
Some lesser-known September Holidays
Let’s not forget the lighthearted ones:
- World Beard Day (September 6)
- National Guacamole Day (September 16)
- Batman Day (September 20)
- National Cheeseburger Day (September 18)
- Talk Like a Pirate Day (September 19)
- Binge Day (September 25)
Publer: Your Social Media Management Powerhouse
Publer is THE social media management tool that not only helps you create new posts based on these special holidays but also:
- Design stunning visuals within the platform with Canva and VistaCreate. No design degree needed!
- Generate relevant hashtags beyond the main one using the built-in generator. Don’t forget location and branded hashtags!
- Drive sales by linking your Instagram posts to specific URLs using the free Link in Bio. Attract new followers and convert them into customers.
Schedule posts with Publer!
FREE Plan Available! Create and Organize Your Fall Calendar!
👇 Download the September 2025 Social Media Holiday Calendar 👇
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