What happened in 1822
10 entries recorded for 1822, listed by date. That was 204 years ago.
1822 at a glance
- Years ago
- 204 (as of 2026)
- Century
- 19th century
- Decade
- 1820s
- Generation born
- Before the named generations
- Entries here
- 10
- Breakdown
- 10 historical events
March
- March 30
East Florida
The United States merged East Florida and West Florida to create the Florida Territory.
April
- April 12
Greek War of Independence
Greek War of Independence: Ottoman troops began a massacre of tens of thousands of Greeks (depicted) on the island of Chios.
May
- May 26
Grue Church fire
The deadliest fire in Norwegian history occurred at a church in Grue, killing at least 113 people.
June
- June 6
Alexis St. Martin
Alexis St. Martin, a Canadian voyageur, was accidentally shot in the stomach; medical investigations of his injury led to a greater understanding of the processes of digestion.
- June 14
Royal Astronomical Society
In a paper presented to the Royal Astronomical Society, English mathematician Charles Babbage proposed a difference engine (pictured), an automatic, mechanical calculator designed to tabulate polynomial functions.
September
- September 7
Pedro I of Brazil
Pedro I declared the independence of Brazil from Portugal, establishing the Empire of Brazil (flag pictured).
- September 27
Lettre à M. Dacier
In a letter to the Académie des Inscriptions et Belles-Lettres in Paris, Jean-François Champollion announced his initial successes in deciphering Egyptian hieroglyphs on the Rosetta Stone (pictured).
November
- November 9
USS Alligator (1820)
USS Alligator engaged three pirate schooners off the coast of Cuba in one of the West Indies anti-piracy operations of the United States.
December
- December 1
Pedro I of Brazil
Pedro I was crowned the first emperor of Brazil, seven weeks after his reign began on his 24th birthday.
- December 9
French Academy of Sciences
In a memoir read to the French Academy of Sciences, Augustin-Jean Fresnel coined the terms linear, circular, and elliptical polarization, and reported a direct refraction experiment verifying his theory that optical rotation is a form of birefringence.
Questions about 1822
What happened in 1822?
This site records 10 entries for 1822, including East Florida on March 30. They are listed below by date.
How long ago was 1822?
204 years ago, counting from 2026. Anyone born in 1822 turns 204 this year.
Which century is 1822 in?
1822 falls in the 19th century, in the 1820s.
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