About the day » Saturday April 21, 1866Calender converter

• Aaltje Neukermans, Gieten (Drenthe) († 1950)
• Alida Cornelia Dobber, Nieuwer-Amstel († 1866)
• Annigina Jonker, Aalsmeer
• (w) Böttger, Richstein, Kreis Wittgenstein
• Anna Angela Ernst, Erens, Emen, Haren (Ems)
• Hendrika Scholten, velp († 1909)
• Antje Piers van der Wagen, Marsum, Menameradiel, Friesland, Nederland († 1946)
• Anna Zande, van de, Tholen Zld. NL
• Aalst, Weesp, Noord-Holland, Nederland († 1866)
• Anna Catharina Thomas, Kerkrade (L († 1940)

• Annechien Daniel de Jonge (51), Veendam, Groningen, Nederland
• Anthonij BOHNEN (70), Kralingen, Rotterdam, Zuid-Holland, Nederland
• Anne Marie Delbrouck (30), Mechelen-Bovelingen, België
• Andreas Schoo (78), Rütenbrock
• Antje Jacobs de Boer (31), Witmarsum (WÛN), Wûnseradiel, Friesland, Nederland
• Aafje Slommer (20), Zijpe, Noord-Holland, Nederland
• Albertus Veulemans (81), Zuurbemde, Glabbeek-Zuurbemde, V-Br, BE
• Aldegondis Wolters (77), Maasbree
• * Tijselina Rademaker (36), Barneveld
• Albertus Wemmenhove (1), Deurne en Liessel

• 1851 » Charles Barrois, French geologist and palaeontologist († 1939)
• 1854 » William Stang, German-American bishop († 1907)
• 1864 » Max Weber, German economist and sociologist († 1920)
• 1868 » Alfred Henry Maurer, American painter († 1932)
• 1870 » Edwin Stanton Porter, American director, producer, and screenwriter († 1941)
• 1874 » Vincent Scotto, French actor and composer († 1952)
• 1882 » Percy Williams Bridgman, American physicist and academic, Nobel Prize laureate († 1961)
• 1885 » Tatu Kolehmainen, Finnish runner († 1967)
• 1887 » Joe McCarthy, American baseball manager († 1978)
• 1889 » Marcel Boussac, French businessman († 1980)

• 1815 » Joseph Winston, American soldier and politician (b. 1746)
• 1825 » Johann Friedrich Pfaff, German mathematician and academic (b. 1765)
• 1852 » Ivan Nabokov, Russian general (b. 1787)
• 1863 » Sir Robert Bateson, 1st Baronet, Irish politician (b. 1782)
• 1900 » Vikramatji Khimojiraj, Indian ruler (b. 1819)
• 1910 » Mark Twain, American novelist, humorist, and critic (b. 1835)
• 1918 » Manfred von Richthofen, German captain and pilot (b. 1892)
• 1924 » Eleonora Duse, Italian actress (b. 1858)
• 1930 » Robert Bridges, English poet and author (b. 1844)
• 1932 » Friedrich Gustav Piffl, Bohemian cardinal (b. 1864)

1. Jan
2. Johannes
3. Hendrik
4. Cornelis
5. Pieter
6. Willem
7. Gerrit
8. Jacob
9. Petrus
10. Jacobus
11. Dirk
12. Arie
13. Adrianus
14. Hendrikus
15. Klaas
16. Albert

1. Maria
2. Johanna
3. Anna
4. Cornelia
5. Elisabeth
6. Adriana
7. Catharina
8. Hendrika
9. Grietje
10. Wilhelmina
11. Aaltje
12. Trijntje
13. Antje
14. Neeltje
15. Elizabeth
16. Petronella

• 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.
• February 21 » Lucy Hobbs Taylor becomes the first American woman to graduate from dental school.
• 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.
• May 2 » Peruvian defenders fight off the Spanish fleet at the Battle of Callao.
• May 5 » Memorial Day first celebrated in United States at Waterloo, New York.
• June 24 » Battle of Custoza: An Austrian army defeats the Italian army during the Austro-Prussian War.
• July 25 » The United States Congress passes legislation authorizing the rank of General of the Army. Lieutenant General Ulysses S. Grant becomes the first to be promoted to this rank.

The temperature on April 21, 1866 was about 12.5 °C. There was 0.5 mm of rain. The air pressure was 1.5 kgf/m² and came mainly from the west-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 77%.