The Byzantine Empire defeats the Abbasid Caliphate at the Battle of Lalakaon. The or Battle of Poson or Porson
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What Happened Today in History on September 3
Explore the historical events that shaped our world on September 3rd. From major milestones to cultural achievements, see what happened on this day in history. Dates for earlier events may be approximate.
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Richard I (Richard the Lionheart) of England is crowned at Westminster Abbey.
The Battle of Ain Jalut takes place between the Mongol Empire led by Kitbuqa and the Mamluk Sultanate of Egypt led by Sultan Qutuz with his General, Baybars. It was a pivotal battle resulting in a significant defeat of the Mongol Empire, halting their expansion into the Muslim territory. The battle was fought in present-day Israel. More
The University of Barcelona is established by King Alfonso V of Aragon.
Henry Hudson’s party aboard the ship Half Moon arrives at what would be called the Hudson River on a trip funded by the Dutch East India Company to discover a water passage to the east. He stopped to trade with the local natives, and proceeded as far as present-day Albany.
This voyage established a Dutch claim to the region and Hudson’s report sparked interest in Holland by detailing opportunities for agriculture and fur trading in the valley that would later bear his name. More
The Battle of Dunbar takes place during the English Civil War, resulting in a decisive victory for the English Parliamentarians over the Scottish Covenanters. More
English Parliamentarian forces under Oliver Cromwell decisively defeat the Royalists at the Battle of Worcester.
The Treaty of Paris is signed, officially ending the American Revolutionary War and recognizing the United States as an independent nation. More
France and the United Kingdom declare war on Germany, two days after Nazi Germany invaded Poland, marking the start of WWII
Montgomery’s 8th Army crosses the Strait of Messina from Sicily and lands at Calabria, beginning the invasion of the Italian mainland.
Italy secretly signs an armistice with the Allies, effectively surrendering in World War II and leading to the collapse of Fascist rule in Italy. No public announcement was made until five days later.
The Italian Instrument of Surrender was signed by Major-General Walter Bedell Smith for the Allies and Brigade-General Giuseppe Castellano for Italy, the armistice's signing took place at a summit in an Allied military camp at Cassibile, Sicily. More
Qatar, officially the State of Qatar, declares independence from Britain after negotiations with neighboring sheikhdoms (present day United Arab Emirates (U.A.E.) and Bahrain). The earlier Protectory agreement with Britain was replaced with a treaty of friendship. Qatar's 2024 population was estimated to be 3.2 Million.
Viking 2 lands on Mars at Utopia Planitia Mars after a nearly year long journey and begins relaying information about the planet's atmosphere and soil as well as color photographs of the rocky surface.
Like its predecessor, the Viking 2 mission consisted of a lander and an orbiter designed to take high-resolution images and study the Martian surface and atmosphere. The Viking Orbiter 2 functioned until July 25, 1978. The last data from Viking Lander 2 arrived at Earth on April 11, 1980. More