About September 13
September 13, 2025 is the 256th day of the year 2025 in the Gregorian calendar. There are 109 days remaining until the end of this year. The day of the week is Saturday.
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Virgo is the sun sign of a person born on this day. Sapphire is the modern birthstone for this month. Agate is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 157 days remaining before the start of the next Chinese New Year.
What Happened On September 13
- 509 BC –The Temple of Jupiter Optimus Maximus on Rome’s Capitoline Hill is dedicated on the ides of September.
- 335 –Emperor Constantine the Great consecrated the Church of the Holy Sepulchre in Jerusalem.
- 1213 –End of Battle of Muret, during the Albigensian Crusade to destroy the Cathar heresy.
- 1504 –Queen Isabella and King Ferdinand issue a Royal Warrant for the construction of a Royal Chapel (Capilla Real) to be built.
- 1743 –Great Britain, Austria and Savoy-Sardinia sign the Treaty of Worms.
- 1759 –Battle of the Plains of Abraham: British defeat French near Quebec City in the Seven Years’ War, known in the United States as the French and Indian War.
- 1862 –American Civil War: Union soldiers find a copy of Robert E. Lee’s battle plans in a field outside Frederick, Maryland. It is the prelude to the Battle of Antietam.
- 1899 –Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m – 17,058 ft), the highest peak of Mount Kenya.
- 1906 –First flight of a fixed-wing aircraft in Europe.
- 1914 –World War I: The Battle of Aisne begins between Germany and France.
- 1922 –The temperature at 'Aziziya, Libya reaches a world record 57.8 °C.
- 1935 –Rockslide near Whirlpool Rapids Bridge ends the International Railway (New York – Ontario).
- 1948 –Deputy Primer Minister of India Vallabhbhai Patel ordered the Army to move into the Hyderabad to integrate it with Indian Union.
- 1953 –Nikita Khrushchev is appointed secretary-general of the Communist Party of the Soviet Union.
- 1956 –IBM introduces the first computer disk storage unit, the RAMAC 305.
- 1971 –People’s Republic of China: Chairman Mao Zedong’s second in command and successor Marshal Lin Biao flees the country via plane after the failure of alleged coup against Mao. The plane crashes in Mongolia, killing all aboard.
- 1971 –State police and National Guardsmen storm New York’s Attica Prison to end a prison revolt.
- 1988 –Hurricane Gilbert is the strongest recorded hurricane in the Western Hemisphere, later replaced by Hurricane Wilma in 2005 (based on barometric pressure).
- 2001 –Civilian aircraft traffic resumes in the U.S. after the September 11, 2001 attacks.
- 2007 –The Declaration on the Rights of Indigenous Peoples is adopted by the United Nations General Assembly.
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