September 17th, 1221

Born on September 17th, 1221

Age in days, weeks and months
Wow, over 293,000 days old!

Why not celebrate an alternative birthday? In 86 days, exactly on August 28th, 2026, people who were born on September 17th, 1221 will be 294,000 days old!

... in seconds, minutes and hours

What happened on September 17th?

September 17th, 2018

The Israeli Air Force conducted missile strikes that hit multiple targets in western Syria; Syrian air defences responding to the strikes accidentally downed a Russian plane.

September 17th, 2011

Adbusters, a Canadian anti-consumerist publication, organized a protest against corporate influence on democracy at Zuccotti Park in New York City that became known as Occupy Wall Street.

September 17th, 1980

Solidarity, a Polish trade union, was founded as the first independent labor union in an Eastern Bloc country.

September 17th, 1970

The Jordanian army entered Amman as part of operations to oust Palestinian fedayeen from the country in events later known as Black September (smoke over city pictured).

September 17th, 1962

NASA announced the Next Nine astronauts selected for the purpose of landing on the moon.

September 17th, 1958

Tintin in Tibet, the twentieth volume of The Adventures of Tintin by the Belgian cartoonist Hergé and which he regarded as his favourite in the series, began serialisation.

September 17th, 1939

World War II: The Soviet Union invaded Poland from the east, sixteen days after Nazi Germany's attack on the country from the west.

September 17th, 1914

Andrew Fisher, who in his previous term as premier oversaw a period of reform unmatched in the Commonwealth until the 1940s, became Prime Minister of Australia for the third time.

September 17th, 1894

John Hyrum Koyle, a controversial Mormon bishop, began excavating the Dream Mine, which he believed would provide financial support to members of the LDS Church.

September 17th, 1878

A British surveyor was detained by the Zulu on the border with the Colony of Natal; a demand for reparations for the incident formed part of an ultimatum that led to the Anglo-Zulu War.

September 17th, 1862

American Civil War: Almost 23,000 total casualties were suffered at the Battle of Antietam near Sharpsburg, Maryland, where Confederate and Union troops fought to a tactical stalemate.

September 17th, 1859

Disgruntled with the legal and political structures of the United States, Joshua Norton (pictured) distributed letters to various newspapers in San Francisco proclaiming himself to be Emperor Norton.

September 17th, 1849

Harriet Tubman (pictured) escaped from slavery in the U.S. state of Maryland, and later orchestrated the rescues of other slaves via the Underground Railroad.

September 17th, 1793

War of the Pyrenees: Forces from the French Army of the Eastern Pyrenees defeated two divisions of the Army of Catalonia, ending the furthest Spanish encroachment in their invasion of Roussillon.

September 17th, 1775

American Revolutionary War: The Continental Army under Richard Montgomery began the Siege of Fort St. Jean in the British province of Quebec.

Public holidays on September 17th

Fixed holidays (Christian feast day) which are celebrated on September 17th.

Date as a Roman numeral / digit

Leap year

No: With 365 days 1221 is a normal year and no leap year.

Calendar
September 1221