United States Historical Events is a daily guide to the important events that shaped America to what it is today. This is a compilation of significant events for the month of September including the birth and death of famous Americans as well as laws promulgated by U.S. Congress. The list is constantly updated to incorporate the most recent events.
United States Historical Events in September
| Day | Year | Event |
| 1 | 1862 | Union Army troops retreat from Chantilly, Virginia due to heavy casualty during the American Civil War. |
| 1 | 1929 | First issue of Fortune Magazine was published. |
| 1 | 1947 | The Laboratory in New Mexico that produced the first atomic bomb was formally named Los Alamos Scientific Laboratory (LASL). |
| 2 | 1789 | The United States Treasury was established by Congress. It was the third presidential cabinet office to be created. |
| 2 | 1945 | President Truman proclaims V-J Day after the Japanese surrendered in World War II. |
| 3 | 1783 | The Treaty of Paris was signed to officially end the American Revolutionary War and overall state of conflict between the Great Britain and the United States. |
| 3 | 2016 | The United States and China both formally ratify the Paris global climate agreement. |
| 4 | 1781 | 44 Spanish settlers founded Los Angeles as El Pueblo de Nuestra Señora La Reina de los Ángeles (The Village of Our Lady, the Queen of the Angels). |
| 5 | 1774 | The first Continental Congress in the United States assembled in Philadelphia. |
| 6 | 1620 | The Pilgrims begins journey from Plymouth, England on the Mayflower to settle in North America. |
| 7 | 1630 | Founding of Boston in Massachusetts |
| 7 | 1945 | General Douglas MacArthur issued Proclamation No. 1 to the people of Korea, announcing U.S. military control over Korea south of the 38th parallel and establishing English as the official language during military control. |
| 8 | 1892 | The Pledge of Allegiance to the flag the United States, largely composed by Francis Julius Bellamy is first published. |
| 8 | 1900 | Considered as the deadliest hurricane in the United States, Hurricane Galveston makes landfall in the city of Galveston, Texas. Death toll is estimated from 6,000 to 12,000. |
| 8 | 1974 | President Gerald Ford issued Proclamation 4311 giving full and unconditional pardon to his predecessor Richard Nixon for any crimes that he might have committed against the United States as president. |
| 9 | 1850 | California became the 31th State to be admitted to the Union. |
| 10 | 1721 | Birthday: Peyton Randolph, founding father of the US who became the president of the First Continental Congress. |
| 10 | 1813 | The United States defeats a British Fleet at the Battle of Lake Erie during the War of 1812. |
| 11 | 2001 | Coordinated terrorist attacks in the United States, now known as 9/11 Attacks |
| 12 | 1609 | English explorer Henry Hudson begins his exploration of the Hudson River while aboard the Dutch Halve Maen. |
| 13 | 1788 | The Philadelphia Convention names New York City as the temporary capital of the country. |
| 14 | 1901 | Death by Assassination: William McKinley, the 25th US president, died in Buffalo, New York at age 58. |
| 14 | 1934 | The Office of Insular Affairs was created to oversee the federal administration of several United States insular areas such as American Samoa, Guam, the U.S. Virgin Islands, and the Commonwealth of the Northern Mariana Islands. |
| 14 | 1975 | Pope Paul VI canonized Sr. Elizabeth Ann Bayley Seton, the first American-born to become a saint. |
| 15 | 1764 | Brown University, a private Ivy League research university, was established in Providence, Rhode Island. |
| 15 | 1857 | Birthday: William Howard Taft, the 27th US president, was born in Cincinnati, Ohio. |
| 16 | 1908 | General Motors Corporation was founded. |
| 16 | 1915 | The Haitian–American Convention was ratified by the United States Senate to grant the United States the right to provide security in and administer the finances of Haiti for a period of 10 years. |
| 17 | 1787 | The United States Constitution is signed in Philadelphia. |
| 17 | 1928 | Okeechobee hurricane makes landfall near West Palm Beach, Florida. It is considered as the fourth deadliest hurricane in the United States with death toll of over 4,000. |
| 18 | 1850 | The U.S. Congress passes the Fugitive Slave Act of 1850. |
| 18 | 1933 | The Tennessee Valley Authority was established as part of President Franklin D. Roosevelt’s New Deal. Its initial purpose was to provide navigation, flood control, electricity generation, fertilizer manufacturing, regional planning, and economic development to the Tennessee Valley. |
| 18 | 1947 | Establishment of the United States Department of Defense and the Central Intelligence Agency (CIA). |
| 18 | 1958 | Bank of America launched the BankAmericard credit card program which became Visa Card, the dominant payment system worldwide. |
| 19 | 1778 | The Continental Congress passes the first United States federal budget. |
| 19 | 1881 | Death by Assassination: James Garfield Jr., the 20th US president, died in Elberon, New Jersey at age 49. |
| 20 | 1984 | The U.S. embassy in Beirut, Lebanon was attacked by a suicide bomber in a car, killing twenty-two people. |
| 21 | 1938 | The Great Hurricane of 1938 makes landfall on Long Island in New York. Around 500–700 people died. |
| 22 | 1776 | Nathan Hale is hanged for spying during the American Revolution. |
| 22 | 1862 | President Abraham Lincoln issued the Emancipation Proclamation or Proclamation 95 to abolish slavery in the United States. |
| 23 | 1642 | The first commencement exercises happen at Harvard College. |
| 23 | 1920 | The Basilica of the National Shrine of the Immaculate Conception was dedicated in Washington, D.C. |
| 23 | 2015 | Pope Francis canonized Saint Junípero Serra, O.F.M., at the Basilica of the National Shrine of the Immaculate Conception in Washington, D.C. |
| 24 | 1789 | The United States Congress passes the Judiciary Act to create the office of the Attorney General and establish the federal judiciary system |
| 25 | 1890 | The United States Congress establishes Sequoia National Park. |
| 26 | 1789 | George Washington appoints Thomas Jefferson the first United States Secretary of State. |
| 26 | 1914 | The Federal Trade Commission (FTC), an independent agency of the United States government, was organized to enforce the civil (non-criminal) antitrust law and promote consumer protection. |
| 27 | 1998 | The Google internet search engine claims this date as its birthday. |
| 27 | 1962 | Publication of Silent Spring by Rachel Carson which documented the environmental harm caused by the indiscriminate use of pesticides. |
| 28 | 1779 | Samuel Huntington is elected President of the Continental Congress, succeeding John Jay. |
| 29 | 1789 | Adjournment of the First United States Congress |
| 30 | 1630 | Death: Isaac Johnson, one of the Puritan founders of Massachusetts and the colony’s First Magistrate who christened the settlement as “Boston” |
| 30 | 1882 | The Vulcan Street Plant, first commercial hydroelectric power plant of Thomas Edison begins operation. It was later became known as Appleton Edison Light Company. |
| 30 | 1935 | President Franklin D. Roosevelt dedicates the Hoover Dam, located on the Colorado River at the border of Nevada and Arizona. |
RELATED: United States Historical Events in January, February, March, April, May, June July, August, October, November, December
