
Browse Historical Events by Day: What Happened on September 21st?
Discover major events and cultural milestones that happened on this day — organized by year. Dates for earlier events may be approximate.
Note: Sources for the historical content shown, include research and reviews of relevant Online History Resources or printed material. When possible, we show a link to a source which provides additional or unique perspective about the event.
We do our best to provide accurate information but would appreciate being notified if any incorrect information is found. You may do so by using our Feedback link.
The Siege of Antioch begins during the First Crusade as Crusader forces surround the city of Antioch in present-day Turkey, initiating a prolonged siege.
Revolutionary War hero Benedict Arnold turned his back on his country and met secretly with British Major John Andre to discuss handing over West Point to the British, in return for the promise of 20,000 pounds and a British military command for Arnold. More
The United States captures the city of Manila during the Spanish-American War, establishing American control over the Philippines.
The Nez Perce chief Joseph died in 1904 in Nespelem, Washington, of an undiagnosed illness and what his doctor called "a broken heart." His tomb remains in Nespelem today. More
The Great New England Hurricane; a category 3 hurricane, originating near the Cape Verde Islands, slams into Long Island and southern New England without warning. The hurricane causing over 600 deaths and devastated coastal cities and towns. it was the most destructive storm to strike the region in the 20th century. More
The initial Superfortress XB-29 prototype first flew from Boeing Field in Seattle, Washington. The powerful Wright R-3350 engines experienced chronic overheating issues during testing, leading to the crash of the second prototype just north of Boeing Field on February 18, 1943. The first war debut took place in June 5, 1944, against Bangkok, as part of the Allied campaign to liberate Burma from Japanese hands. More
The People's Republic of China is proclaimed by Chairman Mao Zedong, marking the establishment of a communist government in China.
Malta Independence Day from the U.K.
Oman gains independence from the United Kingdom.
Belize Independence day from the UK (Effective day of the Belize Act 1981.
Armenia Independence Day from the Soviet Union. (1991 Armenian independence referendum.)
A 7.6 magnitude earthquake occurs in Taiwan. The death toll from the devastating earthquake was 2,375 and .It caused billions of dollars in damages and left an estimated 100,000 homeless. More