Spice up your September 2021 content with this handy calendar

Updated: Sep 12

Think 34 month-long events in a span of 30 days! Plus, hundreds of interesting single-day occasions

Spice up your September 2021 content with this handy calendar
Can you guess which occasions in September 2021 these images refer to?

Images (from L to R): Kabir Cheema, Nafeez Rahman, Joshua J. Cotten for Unsplash


It’s that time of the month again! The time when you get all your blogging, content-marketing, meme, and social media calendar ideas for the upcoming few weeks in one place.


So, without much preamble, let’s dive into this big list of exciting events, cool holidays, lively festivals, significant occasions, and quirky days coming up in September 2021 you can use for planning and timing your posts.


(A note: I’m excluding popular birthdays and death anniversaries from the list. I’ve realised it’s quite an exclusionary approach to spotlight just a few people for these. Besides, it’s very easy to miss out on a LOT of these dates.


I’m also skipping movie anniversaries this time. You have to admit that researching these dates for films across ALL languages in India and abroad is a labour-intensive effort for a time-starved solo blogger. At the same time, it’s difficult to verify these release dates if they vary across countries. Ditto for sporting events, which are subject to unexpected cancellations and rescheduling these days, so it becomes very cumbersome to update the calendar as and when.


Still, there’s quite a lot happening this month, so you have plenty to work with! Save and bookmark this September 2021 content calendar to make the most of it.)


Month-long events

Wed, 1–Thu, 30 – (World) Alzheimer’s Month

Wed, 1–Thu, 30 – Baby Safety Month

Wed, 1–Thu, 30 – Better Breakfast Month

Wed, 1–Thu, 30 – Biscuit Month

Wed, 1–Thu, 30 – Blueberry Popsicle Month

Wed, 1–Thu, 30 – Chiari Awareness Month

Wed, 1–Thu, 30 – Chicken Month

Wed, 1–Thu, 30 – Childhood Cancer Awareness Month

Wed, 1–Thu, 30 – Classical Music Month

Wed, 1–Thu, 30 – Courtesy Month

Wed, 1–Thu, 30 – Fall Hay Month

Wed, 1–Thu, 30 – Friendship Month

Wed, 1–Thu, 30 – Guide Dog Month

Wed, 1–Thu, 30 – Happy Cat Month

Wed, 1–Thu, 30 – Honey Month

Wed, 1–Thu, 30 – Hunger Action Month

Wed, 1–Thu, 30 – Library Card Sign-up Month

Wed, 1–Thu, 30 – Mushroom Month

Wed, 1–Thu, 30 – Ovarian Cancer Awareness Month

Wed, 1–Thu, 30 – Piano Month

Wed, 1–Thu, 30 – Potato Month

Wed, 1–Thu, 30 – Preparedness Month

Wed, 1–Thu, 30 – Pulmonary Fibrosis Awareness Month

Wed, 1–Thu, 30 – Recovery Month

Wed, 1–Thu, 30 – Responsible Dog Ownership Month

Wed, 1–Thu, 30 – Rice Month

Wed, 1–Thu, 30 – Self-Improvement Month

Wed, 1–Thu, 30 – Sepsis Awareness Month

Wed, 1–Thu, 30 – Sewing Month

Wed, 1–Thu, 30 – Shake Month

Wed, 1–Thu, 30 – Sourdough September

Wed, 1–Thu, 30 – (International) Square Dancing Month

Wed, 1–Thu, 30 – Suicide Prevention Month

Wed, 1–Thu, 30 – Whole Grains Month


Multiple-day events

Mon, 9 OR Tue, 10 August–Tue, 7 September – Muharram month

Mon, 23 August–Mon, 20 September – Bhadrapada month

Mon, 23 August–Wed, 22 September – Virgo month

Wed, 1–Tue, 7 – National Nutrition Week

Sun, 5–Sat, 11 – Suicide Prevention Week

Mon, 6–Wed, 8 – Rosh Hashanah

Wed, 8 September–Wed, 6 October – Safar month

Sun, 12–Sat, 18 – International Housekeepers & Environmental Services Week (second week of September)

Mon, 13–Sun, 19 – Māori Language Week

Mon, 13–Sun, 19 – Neonatal Nurses Week

Sat, 18–Sun, 19 – European Heritage Days (third weekend of September)

Mon, 20–Sun, 26 – International Week of the Deaf (last full week of September)

Mon, 20–Sun, 26 – International Week of Happiness at Work (last full week of September)

Mon, 20–Sun, 26 – Indoor Plant Week (third week of September)

Mon, 20–Mon, 27 – Sukkot

Mon, 20 September–Wed, 6 October – Pitru Paksha

Wed, 15–Thu 16 – Yom Kippur

Wed, 15 September–Fri, 15 October – Hispanic Heritage Month

Tue, 21 September–Wed, 20 October – Ashwin month

Thu, 23 September–Fri, 22 October – Libra month


Single-day events

Wed, 1 – Acne Positivity Day

Wed, 1 – Building and Code Staff Appreciation Day

Wed, 1 – Cap Classique Day

Wed, 1 – Cherry Popover Day

Wed, 1 – Ginger Cat Appreciation Day

Wed, 1 – Global Talent Acquisition Day (first Wednesday of September)

Wed, 1 – Gyro Day

Wed, 1 – (World) Letter Writing Day (read: How to use your writing skills to bring yourself closure)

Wed, 1 – Meteorological autumn starts

Wed, 1 – No Rhyme or Reason Day

Wed, 1 – Slovakia Constitution Day

Wed, 1 – Tofu Day

Wed, 1 – Wattle Day (Australia)


Thu, 2 – Blueberry Popsicle Day

Thu, 2 – Cabernet Day (the Thursday before US Labor Day)

Thu, 2 – Calendar Adjustment Day

Thu, 2 – (World) Coconut Day

Thu, 2 – Grits for Breakfast Day

Thu, 2 – Vietnam Independence Day, a.k.a. Vietnam National Day


Fri, 3 – Australian National Flag Day

Fri, 3 – Bring Your Manners to Work Day (first Friday of September)

Fri, 3 – Chianti Day (first Friday of September)

Fri, 3 – College Colors Day (the Friday before US Labor Day)

Fri, 3 – Food Bank Day (first Friday of September)

Fri, 3 – Lazy Mom’s Day (first Friday of September)

Fri, 3 – Merchant Navy Day

Fri, 3 – Skyscraper Day

Fri, 3 – Welsh Rarebit Day


Sat, 4 – Bacon Day (the Saturday before US Labor Day)

Sat, 4 – (World) Beard Day (first Saturday of September)

Sat, 4 – Eat an Extra Dessert Day

Sat, 4 – Google’s birthday

Sat, 4 – Macadamia Nut Day

Sat, 4 – Newspaper Carrier Day (USA)

Sat, 4 – Tailgating Day (first Saturday of September)

Sat, 4 – (International) Vulture Awareness Day (first Saturday of September)

Sat, 4 – Wildlife Day (USA)


Sun, 5 – Belarusian Written Language Day (first Sunday of September)

Sun, 5 – Be Late for Something Day

Sun, 5 – Brazilian Day

Sun, 5 – (International Day of) Charity

Sun, 5 – Cheese Pizza Day

Sun, 5 – European Day(s) of Jewish Culture

Sun, 5 – Pet Rock Day (first Sunday of September)

Sun, 5 – (World) Samosa Day (see image)

Sun, 5 – Teachers’ Day (India)


Mon, 6 – Bulgaria Unification Day

Mon, 6 – Coffee Ice Cream Day

Mon, 6 – Fight Procrastination Day

Mon, 6 – Mouthguard Day (first Monday of September)

Mon, 6 – New Moon

Mon, 6 – Pola

Mon, 6 – Read a Book Day (recommending my book, PiKu & ViRu, for the occasion! Buy/download, read, and review it here; it’s FREE on Kindle Unlimited)

Mon, 6 – US Labor Day (first Monday of September)


Tue, 7 – Acorn Squash Day

Tue, 7 – Another Look Unlimited Day (the day after US Labor Day)

Tue, 7 – Beer Lovers Day

Tue, 7 – Buy a Book Day (plugging in P&V here again! Buy/download, read, and review it here; it’s FREE on Kindle Unlimited)

Tue, 7 – (International Day of) Clean Air for Blue Skies

Tue, 7 – (World) Duchenne Awareness Day

Tue, 7 – Google Commemoration Day

Tue, 7 – Grateful Patient Day

Tue, 7 – Salami Day

Tue, 7 – Superhuman Day

Tue, 7 – Telephone Tuesday (the day after US Labor Day)


Wed, 8 – Actors’ Day

Wed, 8 – Ampersand Day

Wed, 8 – Iguana Awareness Day

Wed, 8 – (International) Literacy Day

Wed, 8 – Macedonia Independence Day

Wed, 8 – Nativity of Mary

Wed, 8 – Pardon Day

Wed, 8 – Pediatric Hematology/Oncology Nurses’ Day

Wed, 8 – (World) Physical Therapy Day

Wed, 8 – Quiet Day (second Wednesday of September)

Wed, 8 – Star Trek Day


Thu, 9 – Care Bears Share Your Care Day

Thu, 9 – I Love Food Day

Thu, 9 – Jeûne Genevois (Genevan Fast—variable Thursday in September)

Thu, 9 – Komuz Day

Thu, 9 – School Picture Day (second Thursday of September)

Thu, 9 – Steak Au Poivre Day

Thu, 9 – (International) Sudoku Day

Thu, 9 – Teddy Bear Day

Thu, 9 – Wiener Schnitzel Day

Thu, 9 – Wonderful Weirdos Day


Fri, 10 – Ganesh Chaturthi

Fri, 10 – Gibraltar National Day

Fri, 10 – (World) Suicide Prevention Day

Fri, 10 – Swap Ideas Day

Fri, 10 – TV Dinner Day


Sat, 11 – Catalonia National Day

Sat, 11 – (International) Drive Your Studebaker Day (second Saturday of September)

Sat, 11 – Enkutatash, a.k.a. Ethiopian New Year

Sat, 11 – (World) First-Aid Day (second Saturday of September)

Sat, 11 – Hot Cross Bun Day

Sat, 11 – Make Your Bed Day

Sat, 11 – No News is Good News Day

Sat, 11 – Patriot Day

Sat, 11 – 20 Years of 9/11


Sat, 11 OR Sun, 12 – German Language Day


Sun, 12 – Chocolate Milkshake Day

Sun, 12 – Grandparents’ Day

Sun, 12 – Hug and High 5 Day

Sun, 12 – Hug Your Hound Day (second Sunday of September)

Sun, 12 – Just One Human Family Day

Sun, 12 – National Day of Encouragement (USA)

Sun, 12 – Pet Memorial Day (second Sunday of September)

Sun, 12 – Report Medicare Fraud Day

Sun, 12 – United Nations Day for South–South Cooperation

Sun, 12 – Video Games Day


Mon, 13 – Bald is Beautiful Day

Mon, 13 – Boss/Employee Exchange Day (the Monday after US Labor Day)

Mon, 13 – Celiac Awareness Day

Mon, 13 – Defy Superstition Day

Mon, 13 – Hug Your Boss Day

Mon, 13 – Kids Take Over the Kitchen Day

Mon, 13 – Peanut Day

Mon, 13 – Positive Thinking Day

Mon, 13 – Programmers’ Day

Mon, 13 – Roald Dahl Day

Mon, 13 – Supernatural Day

Mon, 13 – Uncle Sam Day


Tue, 14 – Ants on a Log Day (second Tuesday of September)

Tue, 14 – Coloring Day

Tue, 14 – (International) Crab Fest Day

Tue, 14 – Cream-Filled Donut Day

Tue, 14 – Eat a Hoagie Day

Tue, 14 – Feast of the Cross

Tue, 14 – Gobstopper Day

Tue, 14 – Hindi Diwas

Tue, 14 – Live Creative Day

Tue, 14 – Sober Day


Wed, 15 – (World) Afro Day

Wed, 15 – Butterscotch Cinnamon Pie Day

Wed, 15 – Cheese Toast Day

Wed, 15 – Crème de Menthe Day

Wed, 15 – (International Day of) Democracy

Wed, 15 – (International) Dot Day

Wed, 15 – Double Cheeseburger Day

Wed, 15 – Engineers’ Day (India)

Wed, 15 – Felt Hat Day

Wed, 15 – Greenpeace Day

Wed, 15 – Linguine Day

Wed, 15 – Make a Hat Day

Wed, 15 – Online Learning Day

Wed, 15 – Serbian Unity, Freedom and National Flag Day

Wed, 15 – Tackle Kids Cancer Day


Thu, 16 – Choose Your Chocolate Day

Thu, 16 – Cinnamon–Raisin Bread Day

Thu, 16 – Collect Rocks Day

Thu, 16 – Guacamole Day

Thu, 16 – Malaysia Day

Thu, 16 – Mexico Independence Day

Thu, 16 – (World) Ozone Day

Thu, 16 – Pawpaw Day (third Thursday of September)

Thu, 16 – Play-Doh Day

Thu, 16 – Stepfamily Day

Thu, 16 – Teenager Workout Day

Thu, 16 – Working Parents Day


Fri, 17 – Apple Dumpling Day

Fri, 17 – Australian Citizenship Day

Fri, 17 – Concussion Awareness Day

Fri, 17 – (International) Country Music Day

Fri, 17 – Grenache Day (third Friday of September)

Fri, 17 – Hunger Action Day

Fri, 17 – Monte Cristo Sandwich Day

Fri, 17 – (World) Patient Safety Day

Fri, 17 – Pet Bird Day

Fri, 17 – Professional House Cleaners Day

Fri, 17 – Table Shuffleboard Day

Fri, 17 – Tradesmen Day (third Friday of September)


Sat, 18 – Batman Day (third Saturday of September)

Sat, 18 – Big Whopper Liar Day (third Saturday of September)

Sat, 18 – (World) Cleanup Day (third Saturday of September)

Sat, 18 – Coastal Cleanup Day (third Saturday of September)

Sat, 18 – Cheeseburger Day

Sat, 18 – Dance Day (USA—third Saturday of September)

Sat, 18 – Eat an Apple Day (third Saturday of September)

Sat, 18 – First Love Day

Sat, 18 – Gymnastics Day (third Saturday of September)

Sat, 18 – HIV/AIDS and Aging Awareness Day

Sat, 18 – Hug a Greeting Card Writer Day

Sat, 18 – Locate an Old Friend Day (third Saturday of September)

Sat, 18 – Puppy Mill Awareness Day (third Saturday of September)

Sat, 18 – Read an Ebook Day (another excuse for me to plug in P&V, hehe; buy/download, read, and review it here; it’s FREE on Kindle Unlimited)

Sat, 18 – (International) Red Panda Day (third Saturday of September) (see image)

Sat, 18 – Respect Day

Sat, 18 – Rice Krispie Treat Day

Sat, 18 – Software Freedom Day (third Saturday of September)

Sat, 18 – (World) Water Monitoring Day


Sun, 19 – Anant Chaturdashi

Sun, 19 – Butterscotch Pudding Day

Sun, 19 – Meow Like a Pirate Day

Sun, 19 – Talk Like a Pirate Day

Sun, 19 – Wife Appreciation Day (third Sunday of September)

Sun, 19 – Women’s Friendship Day (third Sunday of September)


Mon, 20 – Fried Rice Day

Mon, 20 – Full Moon

Mon, 20 – Pepperoni Pizza Day

Mon, 20 – Punch Day

Mon, 20 – Queso Day

Mon, 20 – Respect for the Aged Day (third Monday of September)

Mon, 20 – String Cheese Day

Mon, 20 – (International Day of) University Sport


Tue, 21 – (World) Alzheimer’s Day

Tue, 21 – Chai Day

Tue, 21 – Escapology Day

Tue, 21 – Get Ready Day (third Tuesday of September)

Tue, 21 – (World) Gratitude Day

Tue, 21 – IT Professionals Day (third Tuesday of September)

Tue, 21 – Mid-Autumn Festival (Chinese)

Tue, 21 – Miniature Golf Day

Tue, 21 – (National) New York Day (USA)

Tue, 21 – (International Day of) Peace (& Non-Violence—UN)

Tue, 21 – Pecan Cookie Day


Wed, 22 – (World) Car-Free Day

Wed, 22 – Centenarian’s Day

Wed, 22 – Chainmail Day

Wed, 22 – Dear Diary Day (read: How I completed #500DaysOfJournaling, despite the pandemic)

Wed, 22 – Elephant Appreciation Day

Wed, 22 – Equinox

Wed, 22 – (National) Girls’ Night in Day (USA)

Wed, 22 – Hobbit Day

Wed, 22 – Ice Cream Cone Day

Wed, 22 – Legwear Day

Wed, 22 – Mabon

Wed, 22 – OneWebDay

Wed, 22 – Online Recovery Day

Wed, 22 – (International Day of) Radiant Peace

Wed, 22 – (World) Rhino Day

Wed, 22 – Rose Day (Welfare of Cancer Patients)

Wed, 22 – Temperature Control Day

Wed, 22 – White Chocolate Day


Wed, 22 OR Thu, 23 – Falls Prevention Awareness Day


Thu, 23 – Celebrate Bisexuality Day

Thu, 23 – Checkers Day, a.k.a. Dogs in Politics Day

Thu, 23 – Great American Pot Pie Day

Thu, 23 – Innergize Day (the day after the September Equinox)

Thu, 23 – Remember Me Thursday (third Thursday of September)

Thu, 23 – Restless Leg Awareness Day

Thu, 23 – (International Day of) Sign Languages

Thu, 23 – Snack Stick Day

Thu, 23 – Teal Talk Day

Thu, 23 – Za’atar Day


Fri, 24 – (World) Bollywood Day

Fri, 24 – Brave Day (fourth Friday of September)

Fri, 24 – Cherries Jubilee Day

Fri, 24 – German Butterbrot Day, a.k.a. German Sandwich Day (last Friday of September)

Fri, 24 – Hug a Vegetarian Day (fourth Friday of September)

Fri, 24 – Lash Stylists’ Day

Fri, 24 – Love Note Day (fourth Friday of September—read: 8 writing exercises for the truly romantic)

Fri, 24 – Punctuation Day


Sat, 25 – Binge Day

Sat, 25 – Comic Book Day

Sat, 25 – Cooking Day

Sat, 25 – (World) Dream Day

Sat, 25 – Hunting and Fishing Day (fourth Saturday of September)

Sat, 25 – Lobster Day

Sat, 25 – Math Storytelling Day

Sat, 25 – One-Hit Wonder Day

Sat, 25 – (World) Pharmacists Day

Sat, 25 – Psychotherapy Day

Sat, 25 – Quesadilla Day

Sat, 25 – (International) Rabbit Day (fourth Saturday of September)

Sat, 25 – Research Administrator Day

Sat, 25 – Save Your Photos Day (last Saturday of September)

Sat, 25 – Tune-up Day

Sat, 25 – World’s Biggest Coffee Morning


Sun, 26 – Better Breakfast Day

Sun, 26 – Chimichanga Day

Sun, 26 – Compliance Officer Day

Sun, 26 – (World) Contraception Day

Sun, 26 – Daughters’ Day (fourth Sunday of September)

Sun, 26 – (World) Deaf Day (last Sunday of September)

Sun, 26 – Dumpling Day

Sun, 26 – European Day of Languages

Sun, 26 – Human Resource Professional Day

Sun, 26 – Johnny Appleseed Day

Sun, 26 – Lumberjack Day

Sun, 26 – Mesothelioma Awareness Day

Sun, 26 – Pancake Day

Sun, 26 – (World) Rivers Day (fourth Sunday of September) (see image)

Sun, 26 – Situational Awareness Day

Sun, 26 – (International Day for the) Total Elimination of Nuclear Weapons


Mon, 27 – Ancestor Appreciation Day

Mon, 27 – Chocolate Milk Day

Mon, 27 – Corned Beef Hash Day

Mon, 27 – Crush a Can Day

Mon, 27 – Family Day (USA—fourth Monday of September)

Mon, 27 – French Community Day

Mon, 27 – Gay Men’s HIV/AIDS Awareness Day

Mon, 27 – No Excuses Day

Mon, 27 – Scarf Day

Mon, 27 – Morning Show Hosts Day

Mon, 27 – (World) Tourism Day


Tue, 28 – Drink Beer Day

Tue, 28 – Good Neighbor Day

Tue, 28 – (International) Poke Day

Tue, 28 – (World) Rabies Day

Tue, 28 – Strawberry Cream Pie Day

Tue, 28 – (International Day for) Universal Access to Information


Tue, 28 OR Wed, 29 – Confucius Day

Tue, 28 OR Thu, 30 – Ask a Stupid Question Day


Wed, 29 – Attend Your Grandchild’s Birthday Day

Wed, 29 – (International Day of) Awareness on Food Loss and Waste Reduction

Wed, 29 – Biscotti Day

Wed, 29 – Coffee Day (USA)

Wed, 29 – (World) Heart Day

Wed, 29 – Michaelmas

Wed, 29 – Starbucks Day

Wed, 29 – Women’s Health and Fitness Day (last Wednesday of September)


Thu, 30 – Blasphemy Day

Thu, 30 – Chewing Gum Day

Thu, 30 – Extra Virgin Olive Oil Day

Thu, 30 – Hot Mulled Cider Day

Thu, 30 – Love People Day

Thu, 30 – (World) Maritime Day

Thu, 30 – Mud Pack Day

Thu, 30 – Orange Shirt Day (Canada)

Thu, 30 – (International) Podcast Day

Thu, 30 – Rumi Day

Thu, 30 – Thunderbirds Day

Thu, 30 – (International) Translation Day


Sources: Bank Bazaar, Cute-Calendar, Days of the Year, Happy Days 365, Holiday Insights, National Day Calendar, There is a Day for That

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