About August 9
August 9, 2025 is the 221st day of the year 2025 in the Gregorian calendar. There are 144 days remaining until the end of this year. The day of the week is Saturday.
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 192 days remaining before the start of the next Chinese New Year.
What Happened On August 9
- 378 –Gothic War: Battle of Adrianople – A large Roman army led by Emperor Valens is defeated by the Visigoths in present-day Turkey. Valens is killed along with over half of his army.
- 1173 –Construction of the campanile of the cathedral of Pisa (now known as the Leaning Tower of Pisa) begins; it will take two centuries to complete.
- 1483 –Opening of the Sistine Chapel in Rome with the celebration of a Mass.
- 1810 –Napoleon annexes Westphalia as part of the First French Empire.
- 1842 –The Webster-Ashburton Treaty is signed, establishing the United States-Canada border east of the Rocky Mountains.
- 1854 –Henry David Thoreau published Walden.
- 1877 –Indian Wars: Battle of Big Hole – A small band of Nez Percé Indians clash with the United States Army
- 1902 –Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
- 1925 –A train robbery takes place in Kakori, near Lucknow, India
- 1930 –Betty Boop made her cartoon debut in Dizzy Dishes.
- 1936 –Summer Olympic Games: Games of the XI Olympiad – Jesse Owens wins his fourth gold medal at the games becoming the first American to win four medals in one Olympiad.
- 1944 –Continuation war: The Vyborg–Petrozavodsk Offensive, the largest offensive launched by Soviet Union against Finland during the Second World War, ends to a strategic stalemate. Both Finnish and Soviet troops at the Finnish front dug to defensive positions, and the front remains stable until the end of the war.
- 1944 –The United States Forest Service and the Wartime Advertising Council release posters featuring Smokey Bear for the first time.
- 1945 –World War II: Nagasaki is devastated when an atomic bomb, Fat Man, is dropped by the United States B-29 Bockscar. 39,000 people are killed outright.
- 1965 –A fire at a Titan missile base near Searcy, Arkansas kills 53 construction workers.
- 1965 –Singapore is expelled from Malaysia and becomes the first and only country to date to gain independence unwillingly.
- 1971 –The Troubles: The British security forces in Northern Ireland launch Operation Demetrius. Hundreds of people are arrested and interned, thousands are displaced, and twenty are killed in the violence that followed.
- 1974 –As a direct result of the Watergate scandal, Richard Nixon becomes the first President of the United States to resign from office. His Vice President, Gerald Ford, becomes president.
- 1999 –Russian President Boris Yeltsin fires his Prime Minister, Sergei Stepashin, and for the fourth time fires his entire cabinet.
- 2006 –At least 21 suspected terrorists were arrested in the 2006 transatlantic aircraft plot that happened in the United Kingdom. The arrests were made in London, Birmingham, and High Wycombe, Buckinghamshire, in an overnight operation.
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