About the day » Wednesday March 21, 1866Calender converter

• Alphonsius Julius Vanneste, Bellegem († 1940)
• Albert Boers, Vledder, Drenthe, Netherlands († 1943)
• Aaltje Bont, Den Hoorn (Texel, NH) († 1952)
• Alida Hendrika Kiers, Bovensmilde, Smilde
• Aartje Dekker, Garderen
• Alexandrina Harrewijn, Ekeren, Antwerpen
• Anna Edzardina Cardinaal, Groningen, Groningen, Nederland († 1935)
• Adrianus Johannes Pouw, Wijk bij Duurstede († 1867)
• (m) Dickel, Balde, Kreis Wittgenstein
• Albert James Gill, Warialda, New South Wales, Australia († 1931)

• Aagje Pieterdr Trompetter (9), Opperdoes, Noord-Holland, Netherlands
• Antonie Mans (70), Aalburg
• Antonius Theeuwes (69), Bergen op Zoom, Noord-Brabant, Nederland
• Anna Ariens van de Wiel (69), Reek
• antonia trepels (0), helden
• (Wemke) Wemmechien Abbas (23), Finsterwolde, Nederland
• Antje Blaauw (56), Zuidbroek
• Alexander Dimitrivitsj Prins Lvov (65)
• Aagje Trompetter (9), Opperdoes, Medemblik, Noord-Holland, Nederland
• Anna Andries Wesberg

• 1854 » Alick Bannerman, Australian cricketer and coach († 1924)
• 1857 » Alice Henry, Australian journalist and activist († 1943)
• 1859 » Daria Pratt, American golfer († 1938)
• 1865 » George Owen Squier, American general († 1934)
• 1866 » Antonia Maury, American astronomer and astrophysicist († 1952)
• 1867 » Florenz Ziegfeld, Jr., American director and producer († 1932)
• 1869 » David Robertson, Scottish-English golfer and rugby player († 1937)
• 1874 » Alfred Tysoe, English runner († 1901)
• 1876 » Walter Tewksbury, American runner and hurdler († 1968)
• 1877 » Maurice Farman, French race car driver and pilot († 1964)

• 1804 » Louis Antoine, Duke of Enghien (b. 1772)
• 1843 » Guadalupe Victoria, Mexican general and politician, 1st President of Mexico (b. 1786)
• 1843 » Robert Southey, English poet, historian, and translator (b. 1774)
• 1854 » Pedro María de Anaya, Mexican soldier. President (1847-1848) (b. 1795)
• 1863 » Edwin Vose Sumner, American general (b. 1797)
• 1869 » Juan Almonte, son of José María Morelos, was a Mexican soldier and diplomat who served as a regent in the Second Mexican Empire (1863-1864) (b. 1803)
• 1884 » Ezra Abbot, American scholar and academic (b. 1819)
• 1891 » Joseph E. Johnston, American general (b. 1807)
• 1915 » Frederick Winslow Taylor, American golfer, tennis player, and engineer (b. 1856)
• 1920 » Evelina Haverfield, British suffragette and aid worker (b. 1867)

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
• In The Netherlands , there was from February 10, 1866 to June 1, 1866 the cabinet Fransen van de Putte, with I.D. Fransen van de Putte (liberaal) as prime minister.
• From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
• The Netherlands had about 3.6 million citizens.
• January 18 » Wesley College is established in Melbourne, Australia.
• February 21 » Lucy Hobbs Taylor becomes the first American woman to graduate from dental school.
• March 27 » President of the United States of America Andrew Johnson vetoes the Civil Rights Act of 1866. His veto is overridden by Congress and the bill passes into law on April 9.
• April 6 » The Grand Army of the Republic, an American patriotic organization composed of Union veterans of the American Civil War, is founded. It lasts until 1956.
• April 8 » Italy and Prussia ally against the Austrian Empire.
• May 22 » Oliver Winchester founded the Winchester Repeating Arms

The temperature on March 21, 1866 was about 6.8 °C. The air pressure was 6 kgf/m² and came mainly from the northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 51%.