Tuesday
September 21, 2027
16 holidays and observances fall on this day.
International Day of Peace
International Day of Peace is celebrated annually on September 21. Learn about its history, importance, and how to celebrate this UN day of global
World Mini Golf Day
World Mini Golf Day is celebrated every September 21, a cheerful invitation to enjoy easygoing competition and make memories on the mini-golf course.
World Alzheimer’s Day
World Alzheimer’s Day on September 21 raises awareness for Alzheimer’s disease. Learn its history, importance, and how to observe this global health
World Gratitude Day
World Gratitude Day on September 21 encourages everyone to pause and appreciate the people and blessings in their lives. Learn its history and how to
Mabon Day
Mabon Day on September 21 celebrates the Autumnal Equinox, balance, and harvest gratitude. Learn its history, importance, and ways to honor this seasonal
National Chai Day
Celebrate National Chai Day on September 21 with a warm cup of spiced tea. Learn about chai's history, health benefits, and fun ways to enjoy this beloved
National Pecan Cookie Day
National Pecan Cookie Day is observed every September 21, a cheerful excuse to bake, share, and enjoy pecan-studded cookies at home or with friends.
National IT Professionals Day
National IT Professionals Day honors the hard work of IT pros on the third Tuesday of September. Learn history, importance, and ways to celebrate.
National Cat & Dog Gut Health Awareness Day
National Cat & Dog Gut Health Awareness Day on September 21 promotes pet digestive wellness. Learn signs, prevention tips, and how to help your cat or dog
National Opioid Awareness Day
National Opioid Awareness Day on September 21 raises awareness about opioid abuse dangers. Learn about prevention, support recovery, and honor those
Escapology Day
Escapology Day on September 21 celebrates the art of escape. Learn about its history, importance, and fun ways to celebrate with escape rooms and more.
National Garage Condo Day
National Garage Condo Day on September 21 celebrates secure, deeded storage and workshop spaces for cars, hobbies, and more. Learn history and how to join.
Belize Independence Day
Belize Independence Day on September 21 marks the nation's 1981 freedom from Britain. Celebrate with parades, food, and pride.
Malta Independence Day
Malta Independence Day on September 21 marks the island's 1964 independence from Britain. Learn about its history, importance, and how to celebrate.
Armenia Independence Day
Armenia Independence Day on September 21 marks the 1991 vote for independence from the Soviet Union. Discover history, significance, and traditions.
Telegraph Pole Appreciation Day
Telegraph Pole Appreciation Day on September 21 celebrates the history and beauty of telegraph poles across the UK. Learn how to join the fun.
Coming up next
World Rhino Day
World Rhino Day is observed every September 22, uniting people and organizations to celebrate rhinos and support real conservation actions.
Hobbit Day
Hobbit Day on September 22 celebrates Bilbo and Frodo's birthdays. Join fans for Tolkien-inspired feasts, readings, and hobbit-themed fun.
International Day of Radiant Peace
International Day of Radiant Peace on September 22 celebrates inner peace and harmony. Discover its history, importance, and ways to celebrate.
Falls Prevention Awareness Day
Falls Prevention Awareness Day on September 22 promotes strategies to prevent falls among older adults, reducing injury risk and improving safety at home
National Girls’ Night In Day
National Girls’ Night In Day on September 22 encourages women to relax, pamper themselves, and enjoy quality time with friends. Celebrate with movies
Dear Diary Day
Dear Diary Day on September 22 encourages everyone to write down their thoughts and feelings. Celebrate by starting or renewing your journaling habit.
National Ice Cream Cone Day
National Ice Cream Cone Day on September 22 celebrates the perfect handheld summer treat. Learn about its history and how to enjoy this delicious day.
National Elephant Appreciation Day
National Elephant Appreciation Day on September 22 raises awareness about elephant conservation and encourages action to protect these endangered animals.