278 social media holidays for your 2021 content calendar [+Template]

Are you celebrating International Cat Day, Pizza Day or Talk Like a Pirate Day?

There are countless observation days around the world on which marketers can share industry-relevant content, participate in a movement or simply generate more attention. But chances are that these days you probably won’t realize until you post your favorite brand about it.

These social media “vacations” are a fun way to connect with new and existing followers who share an affinity for a specific food, fictional character, or pet.

While we don’t recommend sharing content on social media and then adding an irrelevant holiday hashtag, these holidays can be a chance to promote your brand in a relevant way. Otherwise, you could be missing out on valuable opportunities for your brand to participate in conversations between members of your target audience.

To help you plan trending holidays, we’ve created a bookmark list and a downloadable calendar so you can get automatic reminders.

Downloadable holiday calendar

So that you can keep an eye on all of those unique holidays, here is a Google Calendar for Holidays on Social Media.

Aside from the 2021 public holidays, we’ve also set dates in the calendar to repeat annually – either on the exact date they occur or on the day of the week they occur within the month.

Would you like to complete your 2021 calendar with some upcoming holiday posts? Tap the + icon in the lower right corner of the calendar below to add it to your own Google Calendar.

Social media holiday calendar templateUse the template above to help plan your social media holiday posts

National and global holiday calendar: 2021

The list is not exhaustive (there are many food-specific holidays), and these dates and hashtags are subject to change. But this is a great starting point for social media marketers who want to learn more about what’s trending and how to schedule their content to be fun and engaging on social platforms.

January 2021 social media holidays

Iowa State Athletics National Sticker Day Social Media Holiday Tweet

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February 2021 social media holidays

Zach Covey National Weather Person Day Social Media Holiday Tweet

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March 2021 social media holidays

National Park Service National Social Media Holiday Tweet Disconnect Day

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April 2021 social media holidays

christina alexandria national sibling day social media holiday tweet

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May 2021 social media holidays

Purple Newfy World Password Day Social Media Holiday Tweet

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June 2021 social media holidays

Alex Bowman National Donut Day social media holiday tweet

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July 2021 social media holidays

Stadium Give Something Away Day Social Media Holiday Tweet

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Social Media Holidays in August 2021

Wienerschnitzel National Lemonade Day Social Media Holiday Tweet

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Social Media Holidays in September 2021

Gaeilge @ Coláiste Naomh Caoimhin EDL 2021 Social Media Holiday Tweet

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October 2021 social media holidays

The Beatles 4ever World Vegetarian Day Social Media Holiday Tweet

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November 2021 social media holidays

Nickelodeon STEM Day Social Media Holiday Tweet

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December 2021 social media holidays

Nobel Prize Day Globalnews.ca Social Media HolidayTweet

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Sources: National Day Calendar, Sprout Social, TrackMaven, Holiday Insights, Brownielocks, National Peace Corps Association, Sparkflow, There’s a day for it

Editor’s note: This post was originally published in January 2017, but is updated annually for the sake of completeness. The last update of this post was March 2021.

Social media content calendar

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