UK story
Norman invasion of Ireland: English and Irish forces conquered Dublin, forcing Ascall mac Ragnaill, the last Norse–Gaelic king of Dublin, into exile.
141 things happened on 21 September, from 19 BC to 2020. UK stories come first, then the rest of the world.
UK history first: stories from England, Scotland, Wales and Northern Ireland.
UK story
Norman invasion of Ireland: English and Irish forces conquered Dublin, forcing Ascall mac Ragnaill, the last Norse–Gaelic king of Dublin, into exile.
UK story
A British government army led by Sir John Cope is defeated in less than 15 minutes by the Jacobite forces of Prince Charles Edward Stuart.
UK story
American Revolutionary War: The Great Fire of New York (depicted) broke out during the British occupation of New York City, destroying up to 1,000 buildings.
UK story
American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
UK story
War of 1812: British forces abandon their unsuccessful siege of Fort Erie.
UK story
Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
UK story
World War I: The Battle of Nazareth ended with the British Empire victorious over the Ottomans.
UK story
J. R. R. Tolkien's fantasy children's novel The Hobbit, which later served as a prelude to The Lord of the Rings, was first published.
UK story
Malta gains independence from the United Kingdom, but remains in the Commonwealth.
UK story
Portugal accepted a diplomatic mission from Southern Rhodesia despite objections by Britain, which had required the colony to implement black majority rule as a condition of independence.
Emperor Avitus enters Italy with a Gallic army and consolidates his power.
The Treaty of Arras is promulgated, causing Burgundy to switch sides in the Hundred Years' War.
Led by Antonio de Vea, a Spanish naval expedition departed El Callao, Peru, for the fjords and channels of Patagonia to find whether rival colonial powers were in the region.
French Revolution: The National Convention abolishes the monarchy.
The crew of schooner Ancud, led by John Williams Wilson, takes possession of the Strait of Magellan on behalf of the Chilean government.
Taiping Rebellion: The Ever Victorious Army defeats Taiping forces at the Battle of Cixi.
In response to a letter written by eight-year-old Virginia O'Hanlon, The New York Sun published an editorial by Francis Pharcellus Church stating, "Yes, Virginia, there is a Santa Claus".
Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
Salvador Lutteroth establishes Mexican professional wrestling.
Chandrashekhar Agashe established the Brihan Maharashtra Sugar Syndicate Ltd., one of the oldest companies in India.
Lieutenant No Kum-sok, a North Korean pilot, defects to South Korea with his jet fighter.
The Gambia, Maldives and Singapore are admitted as members of the United Nations.
The Soviet Union's Zond 5 landed in the Indian Ocean, becoming the first spacecraft to safely return to Earth after travelling around the Moon.
Bahrain, Bhutan and Qatar join the United Nations.
Philippine president Ferdinand Marcos begins authoritarian rule by declaring martial law.
Seychelles joins the United Nations.
Belize is granted full independence from the United Kingdom.
Sandra Day O'Connor is unanimously approved by the U.S. Senate as the first female Supreme Court justice.
Brunei joins the United Nations.
Armenia gains independence from the Soviet Union.
Russian president Boris Yeltsin triggers a constitutional crisis when he suspends parliament and scraps the constitution.
The first chapter of Naruto, later one of the best-selling manga series, was published.
The Galileo spacecraft is terminated by sending it into Jupiter's atmosphere.
American rock band Green Day released their seventh studio album, American Idiot.
Adventist Health System agreed to pay $118.7 million to settle allegations of fraud. It was the largest a hospital network has ever paid.
Every answer is somewhere on this page. Have a go, then check!
In which year did this happen: “J. R. R. Tolkien's fantasy children's novel The Hobbit”?
C: 1937. 1937 — that’s 89 years ago. Find it on the page
In which year did this happen: “American Revolutionary War: The Great Fire of New York (depicted) broke out”?
B: 1776. 1776 — that’s 250 years ago. Find it on the page
Which of these happened first?
A: American Revolutionary War: The Great Fire of New York (depicted) broke out. 1776: American Revolutionary War: The Great Fire of New York (depicted) broke out · 1964: Malta gains independence from the United Kingdom, but remains in the · 1937: J. R. R. Tolkien's fantasy children's novel The Hobbit Find it on the page
“Malta gains independence from the United Kingdom, but remains in the” happened in 1964. How many years ago was that?
B: 62 years. 2026 − 1964 = 62. Find it on the page
Famous people whose birthday is 21 September.
Well-known people who died on 21 September.
Festivals, holidays and saints’ days celebrated on 21 September somewhere in the world.
Content note: these entries mention things like war, violence, deaths, disasters or crime. They are part of history, but they can be upsetting. Grown-ups and teachers: you may want to read them first. They come straight from Wikipedia and have not been rewritten for children.
Stories with a heading have been written for young readers by A Day in the Past, using the linked articles as sources. Other entries show text from Wikipedia’s “September 21” page and its “On this day” feed, written by Wikipedia contributors and shared under the Creative Commons Attribution-ShareAlike 4.0 licence. Each “Read more” link goes to the article an entry is based on. Photos are credited under each picture. Spotted a mistake? Please tell us.