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.
Is this your birthday? Are you not curious to learn who shares your special day? Find out the August 20 famous birthdays and expand your knowledge today. (Sponsored link)
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.
- 1000 –The foundation of the Hungarian state by Saint Stephen. Today celebrated as a National Day in Hungary.
- 1308 –Pope Clement V pardons Jacques de Molay, the last Grand Master of the Knights Templar, absolving him of charges of heresy.
- 1391 –Konrad von Wallenrode becomes the 24th Hochmeister of the Teutonic Order.
- 1775 –The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona.
- 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.
- 1866 –President Andrew Johnson formally declares the American Civil War over.
- 1914 –World War I: German forces occupy Brussels.
- 1920 –The National Football League, (NFL), is founded in the United States.
- 1926 –Japan’s public broadcasting company, Nippon Hōsō Kyōkai (NHK) is established.
- 1950 –Korean War: United Nations repel an offensive by North Korean divisions attempting to cross the Naktong River and assault the city of Taegu.
- 1975 –Viking Program: NASA launches the Viking 1 planetary probe toward Mars.
- 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.
- 1988 –Peru becomes a member of the Berne Convention copyright treaty.
- 1988 –The Troubles: Eight British Army soldiers are killed and 28 wounded when their bus is hit by a Provisional Irish Republican Army roadside bomb in Northern Ireland (see Ballygawley bus bombing).
- 1989 –The pleasure boat Marchioness sinks on the River Thames following a collision, 51 people are killed.
- 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.
- 1998 –The Supreme Court of Canada rules that Quebec cannot legally secede from Canada without the federal government’s approval.
- 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.
Are you looking for a day of the week calculator? Try it on any date like anniversaries, birthday of someone you know, or any other date that is special to you. You can even try it on historical dates. For example: August 20
(Sponsored by DayOfTheWeek.org)
Share or Link to This Page: