About August 20
August 20, 2025 is the 232nd day of the year 2025 in the Gregorian calendar. There are 133 days remaining until the end of this year. The day of the week is Wednesday.
You can browse the full year calendar in case you need it.
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Leo is the sun sign of a person born on this day. Peridot is the modern birthstone for this month. Diamond is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 181 days remaining before the start of the next Chinese New Year.
What Happened On August 20
- 917 –Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army.
- 1858 –Charles Darwin first publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London, alongside Alfred Russel Wallace’s same theory.
- 1882 –Peter Ilyich Tchaikovsky’s 1812 Overture debuts in Moscow.
- 1920 –The National Football League, (NFL), is founded in the United States.
- 1920 –The first commercial radio station, 8MK (now WWJ), begins operations in Detroit, Michigan.
- 1938 –Lou Gehrig hits his 23rd career grand slam – a record that still stands.
- 1940 –British Prime Minister Winston Churchill makes the fourth of his famous wartime speeches, containing the line “Never was so much owed by so many to so few”.
- 1944 –World War II: 168 captured allied airmen, including Phil Lamason, accused by the Gestapo of being “terror fliers”, arrive at Buchenwald concentration camp.
- 1944 –World War II: the Battle of Romania begins with a major Soviet offensive.
- 1950 –Korean War: United Nations repel an offensive by North Korean divisions attempting to cross the Naktong River and assault the city of Taegu.
- 1955 –In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals.
- 1960 –Senegal breaks from the Mali Federation, declaring its independence.
- 1975 –Viking Program: NASA launches the Viking 1 planetary probe toward Mars.
- 1977 –Voyager Program: NASA launches the Voyager 2 spacecraft.
- 1986 –In Edmond, Oklahoma, U.S. Postal employee Patrick Sherrill guns down 14 of his co-workers and then commits suicide.
- 1988 –Iran–Iraq War: a cease-fire is agreed after almost eight years of war.
- 1989 –The O-Bahn in Adelaide, the world’s longest guided busway, opens.
- 1989 –The pleasure boat Marchioness sinks on the River Thames following a collision, 51 people are killed.
- 1998 –U.S. embassy bombings: the United States launches cruise missile attacks against alleged al-Qaida camps in Afghanistan and a suspected chemical plant in Sudan in retaliation for the August 7 bombings of American embassies in Kenya and Tanzania.
- 2008 –Spanair Flight 5022, from Madrid to Gran Canaria, skids off the runway and crashes at Barajas Airport. 146 people are killed in the crash, and 8 more die later. Only 18 people survive.
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