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.
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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
- 636 –Battle of Yarmouk: Arab forces led by Khalid ibn al-Walid take control of Syria and Palestine away from the Byzantine Empire, marking the first great wave of Muslim conquests and the rapid advance of Islam outside Arabia.
- 917 –Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army.
- 1672 –Former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague.
- 1710 –War of the Spanish Succession: a multinational army led by the Austrian commander Guido Starhemberg defeats the Spanish-Bourbon army commanded by the Marquis de Bay in the Battle of Saragossa.
- 1775 –The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona.
- 1794 –Battle of Fallen Timbers – American troops force a confederacy of Shawnee, Mingo, Delaware, Wyandot, Miami, Ottawa, Chippewa, and Potawatomi warriors into a disorganized retreat.
- 1866 –President Andrew Johnson formally declares the American Civil War over.
- 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.
- 1926 –Japan’s public broadcasting company, Nippon Hōsō Kyōkai (NHK) is established.
- 1940 –In Mexico City exiled Russian revolutionary Leon Trotsky is fatally wounded with an ice axe by Ramon Mercader. He dies the next day.
- 1955 –In Morocco, a force of Berbers from the Atlas Mountains region of Algeria raid two rural settlements and kill 77 French nationals.
- 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.
- 1991 –Estonia, annexed by the Soviet Union in 1940, issues a decision on the re-establishment of independence on the basis of historical continuity of her pre-World War II statehood.
- 1997 –Souhane massacre in Algeria; over 60 people are killed and 15 kidnapped.
- 1998 –The Supreme Court of Canada rules that Quebec cannot legally secede from Canada without the federal government’s approval.
- 2002 –A group of Iraqis opposed to the regime of Saddam Hussein take over the Iraqi Embassy in Berlin for five hours before releasing their hostages and surrendering.
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