About October 20
October 20, 2025 is the 293rd day of the year 2025 in the Gregorian calendar. There are 72 days remaining until the end of this year. The day of the week is Monday.
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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 120 days remaining before the start of the next Chinese New Year.
What Happened On October 20
- 1548 –The city of Nuestra Señora de La Paz (Our Lady of Peace) is founded by Alonso de Mendoza by appointment of the king of Spain and Holy Roman Emperor, Charles V.
- 1740 –Maria Theresa takes the throne of Austria. France, Prussia, Bavaria and Saxony refuse to honour the Pragmatic Sanction and the War of the Austrian Succession begins.
- 1818 –The Convention of 1818 signed between the United States and the United Kingdom which, among other things, settled the Canada – United States border on the 49th parallel for most of its length.
- 1827 –Battle of Navarino – a combined Turkish and Egyptian armada is defeated by British, French, and Russian naval force in the port of Navarino in Pylos, Greece.
- 1904 –Chile and Bolivia sign the Treaty of Peace and Friendship, delimiting the border between the two countries.
- 1910 –The hull of the RMS Olympic, sister-ship to the ill-fated RMS Titanic, is launched from the Harland and Wolff shipyard in Belfast, Northern Ireland.
- 1935 –The Long March ends.
- 1943 –The cargo vessel Sinfra is attacked by Allied aircraft at Suda Bay, Crete, and sunk. 2,098 Italian prisoners of war drown with it.
- 1944 –General Douglas MacArthur fulfills his promise to return to the Philippines when he commands an Allied assault on the islands, reclaiming them from the Japanese during the Second World War.
- 1944 –Liquid natural gas leaks from storage tanks in Cleveland, then explodes; the explosion and resulting fire level 30 blocks and kill 130.
- 1944 –The Soviet Army and Yugoslav Partisans liberate Belgrade, the capital of Yugoslavia
- 1947 –The House Un-American Activities Committee begins its investigation into Communist infiltration of Hollywood, resulting in a blacklist that prevents some from working in the industry for years.
- 1947 –United States of America and Pakistan establish diplomatic relations for the first time.
- 1951 –The “Johnny Bright Incident” occurs in Stillwater, Oklahoma
- 1952 –Governor Evelyn Baring declares a state of emergency in Kenya and begins arresting hundreds of suspected leaders of the Mau Mau Uprising, including Jomo Kenyatta, the future first President of Kenya.
- 1961 –The Soviet Union performs the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf class submarine.
- 1970 –Siad Barre declares Somalia a socialist state.
- 1976 –The ferry George Prince‘’is struck by a ship while crossing the Mississippi River between Destrehan and Luling, Louisiana. Seventy-eight passengers and crew die and only 18 people aboard the ferry survive.
- 1977 –A plane carrying Lynyrd Skynyrd crashes in Mississippi, killing lead singer Ronnie Van Zant and guitarist Steve Gaines along with backup singer Cassie Gaines, the road manager, pilot, and co-pilot.
- 1991 –A 6.8 Mw earthquake strikes the Uttarkashi region of India, killing more than 1,000 people.
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