Calendar · Everything

September 1828

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Sunday

September 21 27

Open this day

Sunday, September 21

Armenia Independence Day

Armenia Independence Day, observed on September 21, celebrates Armenia’s independence and the country’s enduring sense of national identity. The holiday commemorates the 1991…

Civic Armenia

Sunday, September 21

Belize Independence Day

Belize Independence Day, observed on September 21, celebrates Belize’s independence and the nation’s journey as a sovereign country. The day honors the people, history, and…

Civic Belize

Sunday, September 21

Mabon

Mabon, observed on September 21, is a modern Pagan and Wiccan celebration of the autumn harvest. It is a time to recognize the abundance of the earth, give thanks for the food…

Cultural United States, Canada +4

Sunday, September 21

Malta Independence Day

Malta Independence Day, observed on September 21, commemorates Malta’s independence from British rule in 1964. The day marks an important milestone in the nation’s history and…

Civic Malta

Sunday, September 21

Telegraph Pole Appreciation Day

Telegraph Pole Appreciation Day, observed on September 21, is a chance to recognize the humble poles that helped transform communication. Long before modern digital networks,…

Cultural

Sunday, September 21

Yom Kippur

Yom Kippur, observed on September 21, is the holiest day in the Jewish calendar and a solemn time for reflection, repentance, and renewal. Known as the Day of Atonement, it…

Religious Israel, United States +19

Week starting Sunday, September 21

Child Passenger Safety Awareness Week

Child Passenger Safety Awareness Week is a week-long observance in September dedicated to helping families keep young passengers safe on every journey. It highlights the…

Awareness Week United States, Canada

Sunday, September 21

Fairtrade Fortnight

Fairtrade Fortnight, observed on September 21, is a time to learn more about how everyday purchases can support farmers, growers, workers, and communities around the world. The…

Awareness United Kingdom, Ireland +2

Sunday, September 21

International Day of Peace

International Day of Peace, observed on September 21, is a global occasion dedicated to strengthening the ideals of peace, nonviolence, and cooperation among people and nations.…

Awareness Afghanistan, Argentina +48

Week starting Sunday, September 21

National Eye Health Week

National Eye Health Week is observed during a week in September, bringing attention to the importance of looking after our eyes and protecting our vision. It encourages people of…

Awareness Week United Kingdom

Sunday, September 21

National Jeans for Genes Day

National Jeans for Genes Day is observed on September 21 and invites people to wear denim in support of children and families affected by genetic disorders. The familiar jeans…

Awareness United Kingdom, Australia

Sunday, September 21

National Opioid Awareness Day

National Opioid Awareness Day, observed on September 21, is a time to promote understanding of opioid use, addiction, overdose prevention, and recovery. The observance encourages…

Awareness United States

Week starting Sunday, September 21

Recycle Awareness Week

Recycle Awareness Week is a week-long observance in September that encourages people to think more carefully about what they throw away and how everyday choices affect the…

Awareness Week Australia, Canada +3

Sunday, September 21

World Alzheimer’s Day

World Alzheimer’s Day, observed on September 21, brings people together to raise awareness about Alzheimer’s disease and other forms of dementia. It is an opportunity to learn…

Awareness United States, Canada +42

Sunday, September 21

World Gratitude Day

World Gratitude Day, observed on September 21, is a meaningful occasion to pause and recognize the people, experiences, and everyday blessings that enrich our lives. It invites…

Awareness United States, Canada +6

Week starting Sunday, September 21

Deaf Dog Awareness Week

Deaf Dog Awareness Week is observed during a week in September to celebrate deaf dogs and the people who help them thrive. The observance shines a light on the fact that hearing…

Just for fun Week United States, Canada +2

Sunday, September 21

Escapology Day

Escapology Day, observed on September 21, celebrates the thrilling art and history of escape acts. From Houdini-inspired feats to modern performances involving locks, chains,…

Just for fun United States, United Kingdom

Week starting Sunday, September 21

Family Week

Family Week is a warm opportunity to celebrate the bonds, memories, and everyday moments that bring families together. Observed during a week in September, it encourages…

Just for fun Week Australia, New Zealand +2

Sunday, September 21

Miniature Golf Day

Miniature Golf Day, observed on September 21, celebrates the playful challenge and enduring appeal of miniature golf. With its colorful courses, creative obstacles, and easygoing…

Just for fun United States

Sunday, September 21

National Cat & Dog Gut Health Awareness Day

National Cat & Dog Gut Health Awareness Day, observed on September 21, shines a light on the important connection between digestive health and the overall well-being of our…

Just for fun United States

Sunday, September 21

National Chai Day

National Chai Day, observed on September 21, celebrates the comforting, aromatic tea known around the world as chai. Often prepared with black tea, milk, sugar, and warming…

Just for fun United States

Sunday, September 21

National Garage Condo Day

National Garage Condo Day, observed on September 21, celebrates the versatility and growing appeal of garage condos—private, secure spaces that combine vehicle storage with room…

Just for fun United States

Sunday, September 21

National Pecan Cookie Day

National Pecan Cookie Day, observed on September 21, is a delightful occasion to celebrate the rich, buttery flavor of pecans in one of America’s favorite homemade treats. It…

Just for fun United States

Week starting Sunday, September 21

National Surgical Technologists Week

National Surgical Technologists Week is a week-long observance in September that recognizes the vital contributions of surgical technologists, the skilled professionals who help…

Just for fun Week United States

See all 27 for September 21