On This Day in History
September 17
The Camp David Accords Signed
Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin signed the Camp David Accords, a major step toward Middle East peace.
NASA Unveils the Space Shuttle Enterprise
NASA rolled out the Space Shuttle Enterprise, the first space shuttle orbiter, marking a new era in reusable spacecraft.
World Health Organization Declares Smallpox Eradicated in Americas
The WHO declared smallpox eradicated in the Americas, a milestone in global public health.
First Television Broadcast of a U.S. Presidential Address
President Harry S. Truman delivered the first-ever televised presidential address from the White House, marking a new era in political communication.
Operation Market Garden Launched in WWII
Allied forces launched Operation Market Garden, the largest airborne operation in history, aiming to secure bridges in the Netherlands.
Soviet Union Invades Poland During World War II
The Soviet Union invaded eastern Poland, two weeks after Germany's invasion, as part of the Molotov-Ribbentrop Pact.
First Successful Synthesis of LSD
Swiss chemist Albert Hofmann first synthesized LSD, a substance that would later influence psychiatry and counterculture movements.
First Successful Transatlantic Flight by Zeppelin
The LZ 127 Graf Zeppelin completed its first transatlantic flight, advancing long-distance air travel.
First Successful Tank Prototype Tested
The British Army tested the first successful prototype of a tank, changing the future of ground warfare.
First Aircraft Lands on the Deck of a Moving Ship
Pilot Eugene Ely successfully landed a plane on a moving warship, demonstrating the potential of naval aviation.
First Demonstration of Wireless Telegraphy
Guglielmo Marconi demonstrated wireless telegraphy to the British Army, pioneering modern wireless communication.
First Subway Line Opens in Boston
Boston opened the first subway line in North America, marking a significant advancement in urban transportation.
The First Modern-Time Olympics End in Athens
The inaugural modern Olympic Games concluded in Athens, reviving the ancient sporting tradition on a global scale.
First Motion Picture Studio Opens
Thomas Edison opened the world's first motion picture studio, the Black Maria, laying the foundation for the film industry.
Battle of Antietam Becomes Bloodiest Day in American History
The Battle of Antietam during the American Civil War resulted in the highest single-day casualty count in U.S. history.
First Use of Modern Synthetic Dye
William Henry Perkin's discovery of mauveine marked the first use of synthetic dye, transforming the textile industry.
Fugitive Slave Act Passed in the United States
The U.S. Congress passed the Fugitive Slave Act, intensifying tensions that would lead to the American Civil War.
First International Cricket Match Played
The first international cricket match was played between Canada and the United States, marking the start of international cricket.
First Passenger Bus Service Begins in London
The first organized passenger bus service using horse-drawn buses began in London, revolutionizing public transportation.
U.S. Constitution Signed
The United States Constitution was signed by delegates at the Constitutional Convention in Philadelphia, establishing the framework of the U.S. government.