Hiroshima Peace Memorial Ceremony (Hiroshima, Japan)
Independence Day in Bolivia (celebrates the independence of Bolivia from Spain in 1825)
Jamaica Independence Day (celebrates the independence of Jamaica from the United Kingdom in 1962)
National Root Beer Float Day in USA
Wiggle Your Toes Day
In 2016 engineers at the University of California, Berkeley, create the first dust-sized wireless sensors that may be implanted within the body.
2011 – War in Afghanistan: A United States military helicopter is shot down, killing 30 American special forces members and a working dog, 7 Afghan soldiers, and 1 Afghan civilian. It was the deadliest single event for the United States in the War in Afghanistan.
1991 – Takako Doi, chair of the Social Democratic Party, becomes Japan's first female speaker of the House of Representatives.
1960 – Cuban Revolution: Cuba nationalizes American and foreign-owned property in the nation.
1956 – After going bankrupt in 1955, the American broadcaster DuMont Television Network makes its final broadcast, a boxing match from St. Nicholas Arena in New York in the Boxing from St. Nicholas Arena series.
1945 – World War II: Hiroshima, Japan is devastated when the atomic bomb "Little Boy" is dropped by the United States B-29 Enola Gay. Around 70,000 people are killed instantly, and some tens of thousands die in subsequent years from burns and radiation poisoning.
1942 – Queen Wilhelmina of the Netherlands becomes the first reigning queen to address a joint session of the United States Congress.
1926 – Gertrude Ederle becomes the first woman to swim across the English Channel.
1914 – World War I: First Battle of the Atlantic: Two days after the United Kingdom had declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea.
1890 – At Auburn Prison in New York, murderer William Kemmler becomes the first person to be executed by electric chair.
1862 – American Civil War: The Confederate ironclad CSS Arkansas is scuttled on the Mississippi River after suffering catastrophic engine failure near Baton Rouge, Louisiana.
1819 – Norwich University is founded in Vermont as the first private military school in the United States.
1787 – Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia, Pennsylvania.
1777 – American Revolutionary War: The bloody Battle of Oriskany prevents American relief of the Siege of Fort Stanwix.
1538 – Bogotá, Colombia, is founded by Gonzalo Jiménez de Quesada.