September 1, 1969 – Military officers overthrew the Libyan government. The Libyan Arab Republic was then proclaimed under Colonel Muammar Gaddafi.

September 2, 31 B.C. – Roman legions under Augustus Caesar defeated Mark Anthony’s naval force at Actium.

September 3, 1833 – The New York Sun newspaper first appeared, marking the beginning of the ‘penny press,’ inexpensive newspapers sold on sidewalks by newspaper boys. The paper focused on human interest stories and sensationalism and by 1836 was the largest seller in America with a circulation of 30,000. 

September 4, 1781 – “Los Angeles was founded by the Spanish Governor of California, Felipe de Neve, near the site of the Native American village of Yang-na. The original name was El Pueblo de la Reina de Los Ángeles (The Town of the Queen of the Angels)”.

September 5, 1975 – The first of two assassination attempts in September on President Gerald Ford occurred as a woman pointed a gun at the President in Sacramento, California. Two weeks later, a second attempt occurred as another woman fired a shot at Ford in San Francisco. Ford was not harmed in either incident.

September 6, 1991 – Leningrad was renamed Saint Petersburg by Russian legislators following the collapse of the Soviet Union.

September 7, 1822 – Brazil declared its independence from Portugal after 322 years as a colony.

September 8, 1565 – The first Catholic settlement in America was founded by Spaniard Don Pedro Menendez de Aviles at St. Augustine, Florida.

September 9, 1776 – The United States came into existence as the Continental Congress changed the name of the new American nation from the United Colonies.

September 10, 1919 – Following the defeat of Germany in World War I, the victorious Allies signed the Treaty of Saint-Germain ceding parts of pre-war German-Austria to Italy and Czechoslovakia. Austria was also forbidden to unite with Germany.

September 11, 2001 – The worst terrorist attack in U.S. history occurred as four large passenger jets were hijacked then crashed, killing nearly 3,000 people that is now called 9/11. 

September 12,  1943 – Former Italian Dictator Benito Mussolini was rescued by German paratroopers on orders from Adolf Hitler. Mussolini was being held prisoner by Italian authorities following the collapse of his Fascist regime.

September 13, 1788 – The U.S. Congress chose New York as the Federal capital of the new American government.

September 14, 1741 – Composer George Frederick Handel finished Messiah after working on it nonstop for 23 days.

September 15, 1944 – The first entry of American troops into Hitler’s Germany occurred as elements of the U.S. 7th and 5th Corps reached the southwestern frontier of Germany.

September 16, 1620 – The Mayflower ship departed from England, bound for America with 102 passengers and a small crew. The ship weathered dangerous Atlantic storms and reached Provincetown, Massachusetts on November 21st. The Pilgrims disembarked at Plymouth on December 26th.

September 17, 1908 – “The first fatality involving powered flight occurred as a biplane piloted by Orville Wright fell from a height of 75 feet, killing Lt. Thomas E. Selfridge, his 26-year-old passenger. A crowd of nearly 2,000 spectators at Fort Myer, Virginia, observed the crash of the plane which was being tested for possible military use. Wright himself was seriously injured”.

September 18, 1810 – Chile declared its independence from Spain after 269 years as a colony.

September 19, 1676 – “Jamestown, Virginia, was attacked and burned during a rebellion led by Nathaniel Bacon against the Royal Governor, Sir William Berkeley”.

September 20, 1989 – “F.W. De Klerk was sworn in as president of South Africa. He began an era of reform aimed at ending apartheid and was succeeded by Nelson Mandela”.

September 21, 1949 – The “Republic of China was proclaimed by its Communist leaders”.

September 22, 1828 – “Shaka, chief of the Zulus and founder of the Zulu empire, was killed by his two half-brothers”.

September 23, 1991 – Armenia declared its independence from the Soviet Union.

September 24, 1980 – War erupted between Iran and Iraq as Iraqi troops crossed the border and encircled Abadan, then set fire to the world’s largest oil refinery.

September 25, 1513 – Spanish explorer Vasco Nunez de Balboa first sighted the Pacific Ocean after crossing the Isthmus of Panama.

September 26, 1687 – The Acropolis in Athens was attacked by the Venetian army attempting to oust the Turks, resulting in heavy damage to the Parthenon.

September 27, 1995 – The Israeli cabinet agreed to give Palestinians control of much of the West Bank which had been occupied by Israel for 28 years.

September 28, 1066 – The Norman conquest of England began as Duke William of Normandy landed at Pevensey, Sussex.

September 29, 1789 – Congress created the United States Army, consisting of 1,000 enlisted men and officers.

September 30, 1966 – “Nazi war criminals Albert Speer and Baldur von Schirach were released from Spandau prison after serving 20 years. The prison, originally built for 600 inmates, was left with only one prisoner, former Deputy Führer Rudolf Hess”.

Cites:

https://www.voanews.com/usa/19-years-does-post-911-generation-remember-attacks

https://www.historyplace.com/specials/calendar/Sept.htm