1811 is a normal year starting on Tuesday according to the Christian era (Gregorian calendar).
Zodiac: Yin Metal Goat
Japan (Kansei calendar)
8 years of culture
2471 imperial year
Qing: Kakei 16 years
Joseon: Sunjo 11 years
Nguyen Dynasty: Kataka 10 years
Buddhist calendar: 2353 --2354
Islamic calendar: December 5, 1225-December 15, 1226
Jewish calendar: April 5, 5571-April 15, 5572
Julian calendar: December 20, 1810-December 19, 1811
Modified Julian Day (MJD): -17487 ---17123
Lilian Date (LD): 83354 --83718
January 27-An earthquake occurred on Miyakejima due to a volcanic eruption.
May 14-Paraguay becomes independent of Spain.
The Luddite movement broke out in England (~ around 1817).
Avogadro's Law is announced.
Golovnin landed on Kunashir Island and was imprisoned in Matsumae (Golovnin Incident).
February 22-William Barnes, Linguist (+1886)
March 5 (February 11, 8th year of culture) --Matsudaira Naritsune, Fukui feudal lord (+1835)
March 11-Urbain Le Verrier, Astronomer (+1877)
March 20-Napoleon II, Duke of Reichstadt (+ 1832)
March 22 (February 22, 8th year of culture) --Sakuma Shozan, military scholar (+ 1864)
March 31-Bunsen, German chemist (+1899)
April 23 (March 1, 8th year of culture)-Kuroda Nagahiro, Fukuoka feudal lord (+ 1887)
May 11-Chang & Eng Bunker Brothers, Known as Conjoined Twins (+1874)
May 24 (April 3, 8th year of culture) -Toshitada Doi, Daimyo, 7th feudal lord of the Echizen Ono domain (+ 1868)
May 29 (April 8, 8th year of culture) -Naritoshi Ikeda, Okayama feudal lord (+1842)
June 11-Vissarion Belinsky, literary critic (+ 1848)
June 14-Hariet Beecher Stowe, American Abolitionist and Writer (+ 1896)
July 18-Thackeray, British novelist (+ 1863)
July 20-Elgin concludes the Treaty of Tientsin, the Anglo-Japanese Treaty of Commerce and the Convention of Peking (+ 1863) as a British politician and plenipotentiary envoy
August 3-Elisha Otis, Inventor (+ 1861)
August 5-Ambroise Thomas, composer (+1896)
August 21-Joseph Derenbourg, Linguist (+ 1895)
August 28 (July 10, 8th year of culture) -Maeda Nariyasu, Kaga feudal lord (+1884)
August 30-Gautier, French writer (+ 1872)
September 12-James Hall, Geologist and Paleontologist (+ 1898)
October 22-Franz Liszt, Hungarian composer and pianist (+1886)
October 25-Evariste Galois, Mathematician (+ 1832)
October 27-Isaac Singer, Inventor (+1875)
October 29-Blanc, French Socialist (+ 1882)
November 16-Bright, British politician and free trader (+ 1889)
November 26 (October 11, 16) -Zeng Guofan, military personnel and politicians of the Qing dynasty (+ 1872)
November 28-Maximilian II, King of Bavaria (+ 1864)
January 21 (December 27, 7th year of culture) --The first Dansho Tatekawa, a rakugo storyteller (* year of birth unknown)
February 9 (January 16, 8th year of culture) --Zuiou Inamura, Dutch scholar (* 1758)
March 7 (February 13, 8th year of culture) --Harumi Murata, national scholar and poet (* 1746)
July 29-Richard Bache, Second United States Postmaster General (* 1737)
August 31-Louis Antoine de Bouganville, Explorer, Mathematician, Military (* 1729)
September 4th (July 17th, 8th year of culture) --Matsumura Goshun, painter (* 1752)
October 31-Christian Gotthilf Salzmann, pastor and educator (* 1744)
November 21-Heinrich von Kleist, playwright Jar.