Holidays Calendar for September 15, 2026
The Republic of Costa Rica annually celebrates Independence Day on September 15. This is the anniversary of declaration of independence from Spain in 1821.
People of El Salvador annually celebrate Independence Day on September 15. This day marks the anniversary of declaration of independence from Spain in 1821.
Independence Day is one of the patriotic days in Guatemala. This holiday is annually observed on September 15 to celebrate the day, when Guatemala declared independence from Spain in 1821.
Independence Day is a national holiday in Nicaragua. This day celebrates the anniversary of declaration of independence from Spain in 1821.
Number of countries of Central America celebrate their Independence Day on September 15. Festive ceremonies are also held in Honduras on this day, to celebrate the day, when the country declared independence from Spain.
The feast of Our Lady of Sorrows is one of the important religious observances in Slovakia. This day annually falls on September 15. This is a national non-working holiday.
In some autonomous communities of Spain, the feast day of their patron saint is celebrated as a regional public holiday. For example, Cantabria celebrates Our Lady of Aparecida Day (Festividad de la Bien Aparecida) every year on September 15.
World Lymphoma Awareness Day is observed on September 15 since 2004. This day was was established by the Lymphoma Coalition, that is a non-profit network organization of 49 lymphoma patient groups around the world.
International Dot Day is a global celebration of creativity in the classroom held on September 15 or around this date. It was inspired by The Dot, a 2003 picture book written and illustrated by Peter H. Reynolds.
World Afro Day is celebrated every September 15 to celebrate the natural hair of people of African descent and its importance as part of African identity.
International Myotonic Dystrophy Day, also known as International DM Day, is observed annually on September 15. It was created to raise awareness of a genetic disorder that affects primarily the musculoskeletal system.
The Republic of Belarus annually celebrates Libraries Day on September 15. This observance was established by presidential decree in 2001 under the initiative of the Belarusian Library Association.
September 15 is Engineer's Day in India. This professional day was established to commemorate Sir Mokshagundam Visvesvaraya, a prominent Indian engineer, scholar and statesman.
National Neonatal Nurses Day is observed annually on September 15 to celebrate nurses who care for newborn infants for the first few weeks of their lives. Neonatal nursing is one of the most demanding sub-specialties of nursing care.
Greenpeace Day is observed annually on September 15 to mark the founding anniversary of one of the most famous international NGOs that focus on environmentalism. Since its inception, Greenpeace has become more than just another organization; it is a network of organizations in more than 55 countries on all inhabited continents.
Knowledge Day is one of the national observances in Azerbaijan. This working holiday is annually observed on September 15.
People of Thailand annually celebrate Silpa Bhirasri Day on September 15. This day praises and commemorates Silpa Bhirasri, an outstanding sculptor, considered to be the father of modern art in Thailand.
Battle of Britain Day is one of the important memorial days, that is observed in Great Britain annually on September 15.
People of Mexico annually observe Cry of Dolores (Grito de Dolores) on September 15 to commemorate the event that marked the beginning of the Mexican War of Independence against Spain in 1810. In fact celebration of Cry of Dolores is a prelude to Independence Day.
Anniversaries and Memorial Days →
Slovenia
Restoration of Primorska to the Motherland Day in Slovenia
Restoration of Primorska to the Motherland Day, that annually falls on September 15, is a very important memorial day in the history of Slovenia. This is an official public holiday, however, it's a working day.
The third Tuesday in September annually marks Prince's Day (or Prinsjesdag) in the Netherlands. This is the day of the ceremonial opening of a new parliamentary year.
September 15 is a holiday for those who like mint-flavored liqueurs as the National Crème de Menthe Day is celebrated on this day.
What’s even better than a cheeseburger? Of course a delicious double cheeseburger with two juicy patties and two slices of melty cheese. September 15 is the perfect day to treat yourself to a double cheeseburger because it is National Double Cheeseburger Day.
On September 15, have a cheese toast for breakfast to celebrate National Cheese Toast Day. This holiday was created in honor of a simple but delicious and filling dish that is popular in many countries of the world.
September 15 is a perfect day to have a delicious pasta dish for lunch or dinner because it is National Linguine Day. This unofficial food days celebrates a type of Italian pasta similar to trenette ant fettuccine.
International Day of Democracy is observed by the countries around the world on September 15. This observance is one of the UN International Days and it was established in 2007.
Free Money Day is a global event held annually on September 15. It is a social experiment that aims to promote economics based on sharing. The event was launched in 2011 by Post Growth Institute, an international group that explores paths to global prosperity that do not rely on economic growth.
This Day in History
- 2020 The Bahrain–Israel normalization agreement was formally signed on at the White House in Washington, D.C., making Bahrain the fourth Arab state to recognize Israel.
- 2008 Died: Richard Wright, English keyboardist and songwriter who co-founded the rock band Pink Floyd. He appeared on almost every Pink Floyd album and performed on all their tours.
- 2007 Died: Colin McRae, Scottish rally driver. At 27, McRae was the youngest ever World Champion, a record that stood until 2022. He was also first British driver to win the title.
- 2007 A meteorite fell near the village of Carancas, Peru. The impact created a crater that spewed out boiling water and noxious gases. Villages who approached the site soon fell ill.
- 2000 The 2000 Summer Olympics opened in Sydney. These games are known as the Games of the New Millennium or more commonly as Sydney 2000.
- 1997 Larry Page and Sergey Brin registered the domain name google.com. They formally incorporated their company, Google, on September 4, 1998.
- 1989 Died: Robert Penn Warren, American poet, novelist, and literary critic, one of the founders of New Criticisms. In 1947, he received the Pulitzer Prize for his novel All the King's Men.
- 1984 Born: Prince Harry, Duke of Sussex, the younger son of King Charles III and Diana, Princess of Wales. As of 2024, he was the fifth in the line of succession to the British throne.
- 1981 Born: Ben Schwartz, American actor and comedian. He is best known for his recurring role as Jean-Ralphio Saperstein on the NBC sitcom Parks and Recreation.
- 1980 Died: Bill Evans, American jazz pianist and composer who worked primarily as the leader of his trio. He participated in the recording of Kind of Blue, the best-selling jazz album of all time.
- 1978 Died: Willy Messerschmitt, German aircraft designer and manufacturer, remembered for designing the Messerschmidt Bf 109.
- 1977 Born: Tom Hardy, English actor. His notable film credits include Inception, The Dark Knight Rises, Mad Max: Fury Road, The Revenant, Dunkirk, Venom and its sequels, and many more.
- 1974 South Vietnamese army officer Le Duc Tan hijacked Air Vietnam Flight 706, demanding the aircraft to be flown to Hanoi, North Vietnam. The aircraft crashed while attempting to land, killing all 75 people aboard.
- 1972 Born: Queen Letizia, Queen consort of Spain as the wife of King Felipe VI. She worked as a journalist before marrying Felipe, then Prince of Asturias, in 2004.
- 1966 US President Lyndon B. Johnson wrote a letter to Congress urging the enactment of gun control legislation as a response to Charles Whitman's sniper attack at the University of Texas at Austin.
- 1955 Born: Renzo Rosso, Italian entrepreneur, the founder of Diesel and the president of OTB Group, the parent company of Maison Margiela, Marni, Viktor & Rolf, Jil Sander.
- 1947 At least 1,077 people were killed and 853 were left missing in Japan, when typhoon Kathleen hit the Kantō region.
- 1946 Born: Tommy Lee Jones, American actor. He has received various accolades including, as of 2024, an Academy Award, a Golden Globe Award, a Primetime Emmy Award, and two SAG Awards.
- 1938 Died: Thomas Wolfe, American novelist. His enduring reputation rests largely on his first novel, Look Homeward, Angel, and on the short fiction that appeared during his final years.
- 1937 Born: Robert Lucas, Jr., American economist. Widely regarded as the central figure in the development of the new classical approach to macroeconomics, he received the 1995 Nobel Memorial Prize in Economic Sciences.
- 1935 Nazi Germany adopted a new national flag that bore the swastika. This flag came into use initially as the banner of the Nazi Party (NSDAP) after its foundation.
- 1929 Born: Murray Gell-Mann, American physicist, Nobel Prize laureate for his contributions and discoveries concerning the classification of elementary particles and their interactions.
- 1926 Died: Rudolf Christoph Eucken, German philosopher, notable for his historical and constructive work. In 1908, he was awarded the Nobel Prize for Literature.
- 1916 Tanks were used in battle for the first time ever during the Battle of Somme in World War I.
- 1907 Born: Fay Wray, Canadian-American actress best known for starring as Ann Darrow in the 1933 film King Kong. Her prolific acting career spanned nearly six decades.
- 1890 Born: Agatha Christie, English writer known for her 66 detective novels and 14 short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple.
- 1881 Born: Ettore Bugatti, Italian-born French automobile designer and manufacturer, best remembered as the founder of the automobile manufacturing company Automobiles E. Bugatti.
- 1842 Died: Francisco Morazán, Central American politician and general who served as president of the Federal Republic of Central America from 1830 to 1839.
- 1835 Charles Darwin reached the Galápagos Islands on board of HMS Beagle. The ship landed at Chatham (San Cristobal), the easternmost island of the archipelago.
- 1830 Died: William Huskisson, British statesman, financier, and Member of Parliament. He is commonly known as the first person in the world to die in a railway accident.
- 1700 Died: André Le Nôtre, French landscape architect and the principal gardener of King Louis XIV of France. He is known for designing the park of the Palace of Versailles.
- 1616 The first non-aristocratic, free public school in Europe was opened in the city of Frascati, Italy.
- 1613 Born: François de La Rochefoucauld, French author, notable for his Maximes and Memoirs, the only two works of his dense literary œuvre published.
- 1254 Born: Marco Polo, Venetian merchant and explorer famous for his travels that are recorded in Book of the Marvels of the World (or The Travels of Marco Polo). His book introduced Europeans to Central Asia and China.