Monday
September 16
19 holidays and observances fall on this day.
International Day for the Preservation of the Ozone Layer
Learn about the International Day for the Preservation of the Ozone Layer on September 16. Discover its history, importance, and how to celebrate
National Guacamole Day
National Guacamole Day is honoring the Aztec-born avocado dip with easy, shareable ways to enjoy it at home or with friends.
Working Parents Day
Working Parents Day is celebrating the dedication of parents who balance work and family and encouraging simple, practical ways to support them.
Mayflower Day
Mayflower Day on September 16 honors the 1620 voyage of the Pilgrims. Learn about its history, significance, and ways to celebrate this day.
Collect Rocks Day
Collect Rocks Day on September 16 celebrates the hobby of rock collecting. Learn about its history, importance, and fun ways to participate.
National Trail of Tears Commemoration Day
National Trail of Tears Commemoration Day on September 16 honors Native Americans who suffered during the forced relocations. Learn history and how to
National Tattoo Story Day
National Tattoo Story Day on September 16 celebrates the personal narratives behind tattoos. Share your ink story and honor meaningful body art.
National Play-Doh Day
Celebrate National Play-Doh Day on September 16 with fun sculpting activities, DIY play dough recipes, and creative family time. Learn its history!
Stay Away From Seattle Day
Stay Away From Seattle Day on September 16 gives locals a crowd-free day to enjoy the Emerald City. Learn its history, importance, and fun ways to
National Stepfamily Day
National Stepfamily Day on September 16 honors blended families. Learn about its history, importance, and ways to celebrate this day of resilience.
National Choose Your Chocolate Day
National Choose Your Chocolate Day on September 16 celebrates chocolate variety. Learn about types, history, and ways to enjoy your favorite chocolate.
Anne Bradstreet Day
Discover Anne Bradstreet Day on September 16, celebrating the life and poetry of America's first published poet. Learn her history and how to observe.
Teenager Workout Day
Teenager Workout Day on September 16 encourages teens to stay active and build strength. Discover the history, importance, and fun ways to celebrate this
National Sit With a Stranger Day
National Sit With a Stranger Day on September 16 encourages making new connections. Learn its history, importance, and fun ways to celebrate.
National Cinnamon Raisin Bread Day
Celebrate National Cinnamon Raisin Bread Day on September 16 with homemade loaves, local bakery finds, and creative recipes. Enjoy this sweet, iron-rich
Malaysia Day
Malaysia Day on September 16 celebrates the formation of the Malaysian Federation in 1963. A federal public holiday with ceremonies and unity events.
Mexican Independence Day
Mexican Independence Day on September 16 celebrates Mexico's 1810 declaration of independence. Learn history, traditions, and how to celebrate.
Respect for the Aged Day
Respect for the Aged Day in Japan falls on the third Monday of September. Learn its history, why it matters, and how to celebrate elders.
Papua New Guinea Independence Day
Papua New Guinea Independence Day on September 16 celebrates freedom from Australian rule in 1975. A federal holiday with cultural festivals and national
Coming up next
International Country Music Day
International Country Music Day is honoring the genre’s storytelling roots and inviting fans worldwide to listen, share, and sing along.
International Patient Safety Day
International Patient Safety Day on September 17 raises global awareness about patient safety and calls for action to reduce harm. Learn its history.
National Pet Bird Day
National Pet Bird Day is honoring feathered companions with simple ways to bond, enrich, and practice responsible care.
Smithsonian Day
Smithsonian Day on September 17 offers free admission to museums across the U.S. Celebrate culture and history with a free ticket.
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.
Constitution Day
Constitution Day on September 17 celebrates the signing of the U.S. Constitution, the foundation of American government and civic life.
National Table Shuffleboard Day
National Table Shuffleboard Day on September 17 celebrates the classic game of table shuffleboard. Discover its history, importance, and fun ways to
National Monte Cristo Day
National Monte Cristo Day on September 17 celebrates the sweet-and-savory ham and cheese sandwich. Learn its history, why it matters, and how to enjoy it.
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