About October 21
October 21, 2025 is the 294th day of the year 2025 in the Gregorian calendar. There are 71 days remaining until the end of this year. The day of the week is Tuesday.
You can browse the full year calendar in case you need it.
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Libra is the sun sign of a person born on this day. Opal is the modern birthstone for this month. Jasper is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 119 days remaining before the start of the next Chinese New Year.
What Happened On October 21
- 1209 –Otto IV is crowned emperor of the Holy Roman Empire by Pope Innocent III.
- 1392 –Nanboku-chō: Emperor Go-Kameyama abdicates in favor of rival claimant Go-Komatsu.
- 1520 –Ferdinand Magellan discovers a strait now known as Strait of Magellan.
- 1816 –The Penang Free School is founded in George Town, Penang, Malaysia, by the Rev Hutchings. It is the oldest English-language school in Southeast Asia.
- 1854 –Florence Nightingale and a staff of 38 nurses are sent to the Crimean War.
- 1867 –Manifest Destiny: Medicine Lodge Treaty – Near Medicine Lodge, Kansas a landmark treaty is signed by southern Great Plains Indian leaders. The treaty requires Native American Plains tribes to relocate a reservation in western Oklahoma.
- 1892 –Opening ceremonies for the World’s Columbian Exposition are held in Chicago, though because construction was behind schedule, the exposition did not open until May 1, 1893.
- 1912 –During the First Balkan War, Kardzhali is liberated by Bulgarian forces
- 1921 –George Melford’s silent film, The Sheik, starring Rudolph Valentino, premiers.
- 1921 –President Warren G. Harding delivers the first speech by a sitting President against lynching in the deep south.
- 1944 –World War II: The first kamikaze attack: A Japanese plane carrying a 200 kg bomb attacks HMAS Australia off Leyte Island, as the Battle of Leyte Gulf began.
- 1945 –Women’s suffrage: Women are allowed to vote in France for the first time.
- 1950 –Korean War: heavy fighting begins between British and Australian forces from the 27th British Commonwealth Brigade and the North Korean 239th Regiment during the Battle of Yongju.
- 1956 –Kenyan rebel leader Dedan Kimathi is captured by the British Army, signalling the ultimate defeat of the Mau Mau Uprising, and essentially ending the British military campaign.
- 1959 –In New York City, the Solomon R. Guggenheim Museum, designed by Frank Lloyd Wright, opens to the public.
- 1959 –President Dwight D. Eisenhower signs an executive order transferring Wernher von Braun and other German scientists from the United States Army to NASA.
- 1966 –Aberfan disaster: A slag heap collapses on the village of Aberfan in Wales, killing 144 people, mostly schoolchildren.
- 1977 –The European Patent Institute is founded.
- 1987 –Jaffna hospital massacre is carried out by Indian Peace Keeping Force in Sri Lanka killing 70 ethnic Tamil patients, doctors and nurses.
- 2003 –Images of the dwarf planet Eris are taken and subsequently used in documenting its discovery by the team of Michael E. Brown, Chad Trujillo, and David L. Rabinowitz.
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