UK story
Henry Hudson begins his exploration of the Hudson River while aboard the Halve Maen.
147 things happened on 12 September, from 490 BC to 2014. UK stories come first, then the rest of the world.
UK history first: stories from England, Scotland, Wales and Northern Ireland.
UK story
Henry Hudson begins his exploration of the Hudson River while aboard the Halve Maen.
UK story
Battle of North Point: an American detachment halts the British land advance to Baltimore in the War of 1812.
UK story
The Scottish Cup match between Arbroath and Bon Accord ended 36–0, which is still a world record for an unrigged professional association football match.
UK story
The Newport Transporter Bridge is opened in Newport, South Wales by Viscount Tredegar.
UK story
Southern Rhodesia, today called Zimbabwe, is annexed by the United Kingdom.
UK story
Hungarian-American physicist Leo Szilard conceived of the idea of the nuclear chain reaction while waiting for a traffic light in Bloomsbury, London.
Battle of Marathon: The conventionally accepted date for the Battle of Marathon. The Athenians and their Plataean allies defeat the first Persian invasion force of Greece.
Sixteen Kingdoms: Sima Yao, age 10, succeeds his father Emperor Jianwen as Emperor Xiaowu of the Eastern Jin dynasty.
Yax Nuun Ahiin I (depicted) took the throne as the ruler (ajaw) of the Mayan city of Tikal.
Isaac Angelos is crowned Byzantine emperor following the deposition of Andronikos I Komnenos and after the crowd rejects the coronation of Isaac's uncle John Doukas.
Albigensian Crusade: Simon de Montfort, 5th Earl of Leicester, defeats Peter II of Aragon at the Battle of Muret.
Battle of Portopí: The Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Mallorca, with the purpose of conquering the island.
The Treaty of Alcañices, mediated by the pope, between the king Denis of Portugal and king Ferdinand IV of Castile defines the border between the two countries and establishes an alliance of friendship.
Reconquista: Castilian forces captured Gibraltar from the Emirate of Granada.
Austro-Ottoman War: Battle of Vienna: Several European armies join forces to defeat the Ottoman Empire.
Iran and Russia sign the treaty of Saint Petersburg. Iran is forced to cede all lands on the western and southern coast of the Caspian Sea and Russia pledges to provide military support against the Ottoman Empire.
Mexican–American War: the Battle of Chapultepec begins.
A new constitution marks the establishment of Switzerland as a federal state.
Salisbury, Rhodesia, is founded.
Gustav Mahler's Symphony No. 8, one of the largest-scale choral works in the classical concert repertoire and popularly known as the "Symphony of a Thousand", was first performed in Munich.
Cave paintings are discovered in Lascaux, France.
World War II: The Imperial Japanese Army began the Battle of Edson's Ridge in an effort to retake Henderson Field on Guadalcanal in the Solomon Islands from the Allies.
World War II: The liberation of Yugoslavia from Axis occupation continues. Bajina Bašta in western Serbia is among the liberated cities.
The People's Liberation Army launched the Liaoshen campaign, the first of the three major military campaigns during the late stage of the Chinese Civil War.
Three boys in Flatwoods, West Virginia, U.S., reported seeing a ten-foot-tall (3 m) monster in the woods while investigating a UFO.
U.S. Senator and future President John Fitzgerald Kennedy marries Jacqueline Lee Bouvier at St. Mary's Church in Newport, Rhode Island.
Jack Kilby demonstrates the first working integrated circuit while working at Texas Instruments.
The Soviet Union launches a large rocket, Lunik II, at the Moon.
Bonanza, the first regularly scheduled TV program presented in color, is launched in the United States.
The African and Malagasy Union is founded.
In a speech at Rice Stadium in Houston, U.S. president John F. Kennedy reiterated an aspiration to land a man on the Moon before 1970 (video featured).
Gemini 11, the penultimate mission of NASA's Gemini program, and the current human altitude record holder (except for the Apollo lunar missions and Artemis II).
Emperor Haile Selassie of Ethiopia, 'Messiah' of the Rastafari movement, is deposed following a military coup by the Derg, ending a reign of 58 years.
The 43rd government of Turkey is overthrown in a coup d'état led by General Kenan Evren.
The USSR vetoes a United Nations Security Council Resolution deploring the Soviet destruction of Korean Air Lines Flight 007.
Dwight Gooden sets the baseball record for strikeouts in a season by a rookie with 276, previously set by Herb Score with 246 in 1954. Gooden's 276 strikeouts that season, pitched in 218 innings, set the current record.
Hurricane Gilbert devastates Jamaica; it turns towards Mexico's Yucatán Peninsula two days later, causing an estimated $5 billion in damage.
The two German states and the Four Powers sign the Treaty on the Final Settlement with Respect to Germany in Moscow, paving the way for German reunification.
NASA launches Space Shuttle Discovery on STS-48 to deploy the Upper Atmosphere Research Satellite.
Aboard Space Shuttle Endeavour, American Mae Jemison became the first Black woman to travel to space.
NASA launches Space Shuttle Discovery on STS-51.
Ansett Australia, Australia's first commercial interstate airline, collapses due to increased strain on the international airline industry, leaving 10,000 people unemployed.
The first public release of Steam, a distribution service for computer games, was made available for download.
Typhoon Maemi, the strongest recorded typhoon to strike South Korea, made landfall near Busan.
Israeli–Palestinian conflict: the Israeli disengagement from Gaza is completed, leaving some 2,530 homes demolished.
NASA confirms that its Voyager 1 probe has become the first manmade object to enter interstellar space.
Every answer is somewhere on this page. Have a go, then check!
In which year did this happen: “Hungarian-American physicist Leo Szilard conceived of the idea of the nuclear”?
C: 1933. 1933 — that’s 93 years ago. Find it on the page
In which year did this happen: “The Scottish Cup match between Arbroath and Bon Accord ended 36–0”?
A: 1885. 1885 — that’s 141 years ago. Find it on the page
Which of these happened first?
C: Henry Hudson begins his exploration of the Hudson River. 1933: Hungarian-American physicist Leo Szilard conceived of the idea of the nuclear · 1885: The Scottish Cup match between Arbroath and Bon Accord ended 36–0 · 1609: Henry Hudson begins his exploration of the Hudson River Find it on the page
“Henry Hudson begins his exploration of the Hudson River” happened in 1609. How many years ago was that?
C: 417 years. 2026 − 1609 = 417. Find it on the page
Famous people whose birthday is 12 September.
Well-known people who died on 12 September.
Festivals, holidays and saints’ days celebrated on 12 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 12” 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.