Thursday
August 15
16 holidays and observances fall on this day.
World Greatness Day
World Greatness Day on August 15 encourages gratitude, self-reflection, and recognizing the potential for greatness in everyone. Learn how to celebrate.
National Back To School Prep Day
Celebrate National Back To School Prep Day with simple prep, smarter routines, and stress-saving tips that make the first week back smoother for everyone.
Feast of the Assumption
The Feast of the Assumption on August 15 commemorates Mary's bodily ascent into heaven. Learn about its history, significance, and how to celebrate.
National Relaxation Day
National Relaxation Day on August 15 encourages you to unwind and focus on self-care. Learn about its history, importance, and ways to celebrate.
Check the Chip Day
Check the Chip Day on August 15 reminds pet owners to update their pet's microchip registration. Ensure your lost pet can be reunited with you.
No Sponge Bob Day
No Sponge Bob Day on August 15 invites you to escape the cheerful clamor of Bikini Bottom. Learn its history, importance, and fun ways to celebrate.
National Lemon Meringue Pie Day
National Lemon Meringue Pie Day on August 15 celebrates the classic dessert with a crisp crust, tangy lemon curd, and fluffy meringue topping.
National Leathercraft Day
National Leathercraft Day on August 15 honors the art of leatherworking. Learn its history, importance, and how to celebrate this sustainable craft.
Chant at the Moon Day
Chant at the Moon Day on August 15 is a playful holiday to howl or sing at the moon and enjoy sweet cherries. Celebrate the night sky and connect with
Indian Independence Day
Indian Independence Day on August 15 commemorates freedom from British rule. Learn about its history, significance, and how to celebrate this national
St Mary's Day
St Mary's Day on August 15 is a national holiday in Romania celebrating the Assumption of the Virgin Mary. Learn about its history and traditions.
Flooding of the Nile
Flooding of the Nile on August 15 honors Egypt's life-giving river. Learn about Wafaa-El-Nil, its history, and how to celebrate this two-week festival.
Liechtenstein National Day
Liechtenstein National Day on August 15 celebrates the principality's sovereignty with festivities, a castle ceremony, and fireworks. Learn about its
Green Man Festival
Green Man Festival is a vibrant celebration of music, science, and arts held annually in August in the Brecon Beacons, Wales. Learn about its history and
Malaita Province Day
Malaita Province Day on August 15 celebrates the culture and heritage of Malaita Province in the Solomon Islands with festivities and community events.
Foundation of Old Panama City (Panama la Vieja)
Foundation of Old Panama City (Panama la Vieja) on August 15 honors the 1519 founding of the first European settlement on the Pacific. A public holiday in
Coming up next
National Backflow Prevention Day
National Backflow Prevention Day is observed annually on August 16 to highlight the importance of safe drinking water and backflow prevention.
National Tell A Joke Day
National Tell A Joke Day on August 16 celebrates humor and laughter. Learn its history, importance, and fun ways to participate.
National Men's Grooming Day
Celebrate National Men’s Grooming Day with simple, confidence-boosting routines, a quick tidy-up at the barber, and practical self-care you’ll actually keep.
National Roller Coaster Day
National Roller Coaster Day on August 16 celebrates the thrill of roller coasters with park visits, history, and fun for all ages.
National Authenticity Day
Celebrate National Authenticity Day on August 16—discover its 2021 origins, why authenticity matters, and simple, real-life ways to observe it.
St. Roch’s Day
St. Roch’s Day on August 16 honors the patron saint of dogs and plague victims. Learn about its history, importance, and how to celebrate.
National Airborne Day
National Airborne Day on August 16 honors U.S. airborne forces. Learn about its history, importance, and ways to celebrate this day of tribute.
National Energy Multiplier Day
National Energy Multiplier Day on August 16 celebrates a natural energy drink with matcha, guayusa, and ginger. Boost your day naturally and sustainably!
Browse the calendar
Fewer
More holidays
Bookmarked