September 21st Holidays

September 21 is the 264th day of the Gregorian calendar. Norman invaders win the kingdom of Dublin; J.R.R. Tolkien’s groundbreaking novel, “The Hobbit”, was published. Congress passed the Defense of Marriage Act. Famous birthdays include H.G. Wells, Stephen King and Bill Murray. Today is the International Day of Peace.

We have 23 holidays listed for September 21.

Sep21

National Cat & Dog Gut Health Awareness Day

Almost every aspect of your cat’s or dog’s health depends on the complex community of microorganisms living in their gut. In all sorts of amazing ways, a healthy gut can help your pet live a longer, happier life.

Sep21

Armenia Independence Day

Join the people of Armenia in mass parades and festivals as they celebrate their independence day.

Sep21

Belize Independence Day

Feeling festive? This country's celebration has it all — music, food, friends, and fun.

Sep21

Belize Independence Day

Crack open a rum punch and celebrate the anniversary of Belize’s independence.

Sep21

Escapology Day

Check out three magical ways you too can enjoy Escapology Day like a professional.

Sep21

International Day of Peace

Let there be peace by making the world a better and more sustainable place for all.

Sep21

Mabon Day

Grab your fruit baskets and wine as we dedicate this festival to the bountiful harvest.

Sep21

Malta Independence Day

Though one of the smallest nations globally, Malta has a rich political and cultural history.

Sep21

Mid-Autumn Moon Festival

Let’s celebrate the glorious moon!

Sep21

Miniature Golf Day

Miniature golf can be traced back to the 19th century.

Sep21

National Black Women's Equal Pay Day

Join your voice with the courageous activists rallying to make pay equity a reality.

Sep21

National Brittany Day

Celebrate anyone you know named Brittany and bring this name back in fashion!

Sep21

National Chai Day

Ready your cups, water, and tea mix, as we celebrate an amazing herbal, nourishing drink.

Sep21

National Garage Condo Day

Join us as we celebrate National Garage Condo Day this September 21!

Sep21

National Hannah Day

This holiday is your chance to honor and celebrate all your favorite Hannahs around the world!

Sep21

National Kristina Day

Celebrate anyone you know with this name, with all its plentiful variations and spellings!

Sep21

National Opioid Awareness Day

It’s National Opioid Awareness Day; all hands on deck to eliminate the abuse of these drugs.

Sep21

National Pecan Cookie Day

Get your taste buds dancing as we dive into the cookie jar for National Pecan Cookie Day.

Sep21

National School Backpack Awareness Day

Improper use can lead to back pain or injury, which can impact learning.

Sep21

Telegraph Pole Appreciation Day

It’s time to ramp it up for a day dedicated to the appreciation for telegraph poles!

Sep21

World Alzheimer’s Day

On this day, the world concentrates its efforts on creating awareness of Alzheimer’s disease.

Sep21

World Gratitude Day

World Gratitude Day is the day to start living a life of gratitude.

Sep21

World Mini Golf Day

Come and join us as we learn more about this tee-rific holiday.