Holidays Calendar for September 24, 2025
Constitution Day is a Cambodian national holiday celebrated on September 24. It commemorates the re-coronation of King Norodom Sihanouk and the adoption of the Constitution of Cambodia in 1993.
September 24 is celebrated as Our Lady of Mercy Day in the Dominican Republic. This public and religious holiday celebrates the country's patroness, Our Lady of Mercy (Nuestra Señora de las Mercedes).
National Day of Guinea-Bissau is celebrated on September 24. This public holiday commemorates the proclamation of the independence of the Republic of Guinea-Bissau from Portugal in 1973.
New Caledonia Day is the national day of New Caledonia, a special collectivity of France in the southwest Pacific. It is celebrated on September 24 to commemorate the day New Caledonia officially became a French colony.
Heritage Day is one of the public holidays celebrated in South Africa. It is observed on September 24. The holiday focuses on celebrating the culture, beliefs, and traditions of the South African peoples that comprise a cohesive nation.
Republic Day is one of the public holidays in Trinidad and Tobago. It is celebrated on September 24 to commemorate the day Trinidad and Tobago became a republic.
The Day the Maldives Embraced Islam is a public holiday in the Maldives. It is celebrated each year on the first day of the Islamic month of Rabi' al-thani.
The feast day of Saint Rupert is an official holiday in Salzburg, Austria, where it is known as Rupertikirtag. It is dedicated to Rupert of Salzburg, the patron saint of the state of Salzburg and its eponymous capital.
World Cancer Research Day (WCRD) is observed annually on September 24. Its main goal is to promote cancer research in order to improve quality of life and survival rates among people diagnosed with cancer and to reduce the number of people who develop cancer.
World Day Against Software Patents is observed annually on September 24. It was established by the Foundation for a Free Information Infrastructure to promote the Foundation’s campaign to effectively stop software patents worldwide.
World Dense Breast Day is an annual awareness campaign held on the last Wednesday of September. It was launched in 2022 to educate the general public about dense breasts and highlight the importance of breast screening.
Armed Forces Day in Peru (Día de las Fuerzas Armadas del Perú) is celebrated on September 24. It commemorates the creation of the Peruvian Armed Forces in their modern form.
National Farmers’ Day (Hari Agraria Nasional), also known as National Peasants’ Day (Hari Tani Nasional), is observed in Indonesia annually on September 24. It commemorates the promulgation of the Agrarian Basics Act of 1960.
Every year Canadians celebrate National Tree Day in September. This observance is not just a single day to remember about the value of trees. This is a part of a greater event, National Forest Week.
National Punctuation Day is an annual observance held on September 24. It was established to promote the correct usage of punctuation in the English language.
Mahidol Day is a national observance in Thailand held on September 24. It is the death anniversary of Prince Mahidol Adulyadej who is regarded as the father of modern medicine and public health of Thailand.
Santa Cruz Day is celebrated in the Bolivian department of Santa Cruz on September 24 each year. It was established to commemorate a popular revolt that took place in 1810 and was one of the many uprisings during the Bolivian war of independence.
José Yulo Day (Araw ni José Yulo) is a special non-working holiday celebrated in the Philippine city of Calamba, Laguna on September 24. It commemorates the birthday of a Philippine lawyer and politician who served as the Chief Justice of the Supreme Court and Speaker of the National Assembly.
September 24 is the National Cherries Jubilee Day. It is dedicated to a delicious dessert made with cherries and liqueur (most often Kirschwasser), which is flambéed and typically served with vanilla ice cream.
National Mofongo Day is observed annually on September 24, falling during National Hispanic Heritage Month that lasts from September 15 to October 15. It celebrates a delicious Puerto Rican dish made from plantains.
National Horchata Day is observed annually on September 24. It celebrate a delicious beverage that is commonly associated with Hispanic culture, but his roots can be traced all the way back to the Old World, namely North Africa and Spain.
National Women’s Health & Fitness Day is held annually on the last Wednesday of September, during the National Women’s Health & Fitness Week in the United States. It is a grassroots initiative coordinated by the Health Information Resource Center.
This Day in History
- 2024 King Vajiralongkorn of Thailand gave royal assent to same-sex marriage legislation, making Thailand the first Southeast Asian country to legalize same-sex marriage.
- 2014 India's first interplanetary mission, the Mars Orbiter Mission (also called Mangalyaan, "Mars-craft"), successfully entered Martian orbit.
- 2013 A 7.7-magnitude earthquake took place near Awaran in the province of Balochistan, southwestern Pakistan, killing at least 825 people.
- 2004 Died: Françoise Sagan, French novelist, playwright, and screenwriter. Her best known work is the novel Bonjour Tristesse (Hello Sadness).
- 2003 Born: Joe Locke, Manx actor. He is best known for his roles as Charlie Spring in Heartstopper and as Billy Kaplan / Wiccan in the Marvel Cinematic Universe.
- 1998 Died: Jeff Moss, American composer, lyricist, television writer, and playwright, best known for his work on the TV series Sesame Street.
- 1996 The Comprehensive Nuclear-Test-Ban Treaty opened for signature in New York and was signed by 71 states, including 5 then nuclear-capable states.
- 1993 Born: Ben Platt, American actor and singer. He rose to prominence for originating the title role in the Broadway coming-of-age musical Dear Evan Hansen.
- 1991 Died: Dr. Seuss (pen name of Theodor Seuss Geisel), American writer, cartoonist, and publisher, best known for his children's books.
- 1979 Born: Ross Mathews, American television personality who first rose to fame with his role on The Tonight Show with Jay Leno in 2001.
- 1976 Born: Ian Bohen, American actor known for his role as Peter Hale in MTV's Teen Wolf and as Ryan in Paramount Network's drama series Yellowstone.
- 1972 Japan Airlines Flight 472 landed at Juhu Aerodrome near Bombay, India instead of the city's much larger Santacruz Airport and overran the runway.
- 1969 Born: Megan Ward, American film and television actress. One of her best known roles is Kate Howard in the medical drama General Hospital.
- 1960 The world's first nuclear-powered aircraft carrier USS Enterprise was launched. At 1,123 ft, she is also the world's longest naval vessel.
- 1958 Born: Kevin Sorbo, American actor and director best known for his role as Hercules on the television series Hercules: The Legendary Journeys.
- 1957 President Dwight D. Eisenhower sent the 101st Airborne Division to Little Rock, Arkansas, to solve the Little Rock Crisis by enforcing desegregation.
- 1957 Camp Nou, a football stadium in Barcelona, Spain, was officially opened. It is the largest stadium in Spain and in the entire Europe.
- 1945 Died: Hans Geiger, German physicist, best known as the co-creator of the Geiger counter and for the Geiger-Marsden experiment.
- 1941 Born: Linda McCartney (née Eastman), American musician, photographer, and animal rights activist, the first wife of Paul McCartney.
- 1936 Born: Jim Henson, American puppeteer, actor, screenwriter, film director, and television producer best known as the creator of The Muppet Show.
- 1932 Dr. Babasaheb Ambedkar and Mahatma Gandhi agreed to the Poona Pact which reserved seats in the provincial legislatures for the untouchables.
- 1905 Born: Severo Ochoa, Spanish physician and biochemist who shared the 1959 Nobel Prize in Physiology or Medicine with Arthur Kornberg.
- 1904 Died: Niels Ryberg Finsen, Faroese-Danish physician and scientist who was awarded the 1903 Nobel Prize in Medicine and Physiology.
- 1898 Born: Howard Florey, Australian pathologist and pharmacologist who was co-awarded the 1945 Nobel Prize in Physiology or Medicine.
- 1896 Born: Francis Scott Fitzgerald, American novelist and short story writer, whose best known works include The Great Gatsby and Tender Is the Night.
- 1884 Born: Hugo Schmeisser, German inventor and weapons designer. He is known for developing infantry weapons, such as the StG 44.
- 1852 French engineer Henri Giffard made the first powered and controlled flight on his airship powered by a steam engine, traveling 27 km.
- 1848 Died: Branwell Brontë, English painter, writer, and poet. He was the only brother of the writers Charlotte, Emily, and Anne Brontë.
- 1834 Died: Pedro I of Brazil, the founder and first ruler of the Empire of Brazil. He reigned from 1822 until abdicating in favor of his son in 1831.
- 1802 Died: Alexander Radishchev, Russian author and social critic who was arrested and exiled for his Journey from St. Petersburg to Moscow.
- 1789 The United States Congress passed the Judiciary Act, creating the office of the Attorney General and federal judiciary system and ordering the composition of the Supreme Court.
- 1541 Died: Paracelsus, Swiss physician, alchemist, lay theologian, and philosopher of the German Renaissance. He was a pioneer in several aspects of the "medical revolution" of the Renaissance.
- 1501 Born: Gerolamo Cardano, Italian mathematician, physician, philosopher, and astrologer who wrote over 200 works on various disciplines.
- 768 Died: Pepin the Short, King of the Franks from 751 until his death. He was the first of the Carolingians to be crowned King of the Franks.