September 15 holidays in 2026

Holiday name Holiday location Holiday type
Independence Day Multiple [Show] National Holiday
Independence Day Multiple [Show] National Holiday
Independence Day Multiple [Show] National Holiday
Independence Day Multiple [Show] National Holiday
Independence Day Multiple [Show] National Holiday
Shout of Dolores Mexico Observance
International Day of Democracy - International (Awareness & Cause, United Nations)
Day of Our Lady of Sorrows Slovakia National Holiday
Restoration of Primorska to the Motherland Day Slovenia Observance
Nuestra Señora de la Bien Aparecida Spain (Cantabria) Local Holiday
International Dot Day - Unofficial (Education & Reading, Hobby & Creativity)
National Cheese Toast Day - Unofficial (Food & Drinks)
National Linguine Day - Unofficial (Food & Drinks)
National Felt Hat Day - Unofficial (Lifestyle)
National Double Cheeseburger Day - Unofficial (Food & Drinks)
National Creme de Menthe Day - Unofficial (Food & Drinks)
National Tackle Kids Cancer Day - Unofficial (Health & Body)
National Online Learning Day - Unofficial (Education & Reading)
Greenpeace Day - Unofficial (Nature & Environment)
National IT Professionals Day - Unofficial (Work & Occupation)
Make a Hat Day - Unofficial (Hobby & Creativity, Lifestyle)

Historical Events on September 15

  • 1776: During the New York Campaign of the American Revolutionary War, British troops land at Kip’s Bay.
  • 1789: The U.S Department of Foreign Affairs is renamed to the Department of State; It’s also given a number of different domestic duties.
  • 1795: The Dutch Cape Colony in Southern Africa is seized by Great Britain.
  • 1812: The second supply train to be sent to give supplies to Fort Harrison is ambushed at the Attack of the Narrows during the War of 1812.
  • 1812: Napoleon leads the French army to the Kremlin in Moscow.
  • 1916: At the Battle of the Somme during World War I, tanks are used for the first time in battle.
  • 1918: Allied troops crash Bulgarian defenses on the Macedonian Front during WWI.
  • 1935: Germany enacts the Nuremberg Laws which deprive German Jews of their citizenship.
  • 1935: Nazi Germany adopts the flag that has a swastika in a white circle on a red field as their new national flag.
  • 1940: It’s the climax of the Battle of Britain during World War II. On this day, a large number of Luftwaffe aircraft are shot down by British forces.
  • 1942: The Japanese fires torpedoes and sinks the United States Navy aircraft carrier the USS Wasp at Guadalcanal.
  • 1944: Franklin D. Roosevelt and Winston Churchill meet in Quebec at the Octagon Conference.
  • 1967: United States President Lyndon B. Johnson writes a letter to Congress which urges the enactment of gun control legislation. He did this in response to the sniper attack at the University of Texas at Austin.
  • 1968: The Soviets launch the Zond 5 spaceship. It will become the first spacecraft to fly around the moon and then reenter the Earth’s atmosphere.

Famous Birthdays on September 15

  • 601 – Ali, First Shi’a imam/Fourth Sunni caliph (d. 661)
  • 767 – Saichō, Japanese monk (d. 822)
  • 786 – Al-Ma’mun, Iraqi caliph (d. 833)
  • The 27th President of the United States William Howard Taft is born in 1857.
  • English crime novelist, playwright and short story writer Agatha Christie is born in 1890.
  • American football player Chic Harley is born in 1894.
  • American football player Dan Marino is born in 1961.
  • American drummer Allen Shellenberger is born in 1969.
  • American swimmer Tom Dolan is born in 1975.

Ash Wednesday

Easter Monday

Labor Day


Father’s Day

Eid al-Adha