About the day » Sunday September 20, 1863Calender converter

• Abel Maria Spanjer († 1977)
• Ada Marcelina Marie Elisabeth van Lawick van Pabst, Vreeland († 1947)
• Anna Elisabeth Griffioen, Houtrijk († 1942)
• Aagtje Kugel, Termunten, Groningen, Nederland († 1930)
• Adriaantje Visker, Katendrecht († 1932)
• Anna Maria Louisa Daalman, Graauw en Langendam, gem. Hulst, Zeeuws Vlaanderen, Zeeland, Nederland († 1935)
• Amélia de Campos Salles, Campinas, São Paulo, Brasil
• Anna Van Woerkum, Heerewaarden, Gelderland, Netherlands († 1923)
• Adof Otto Wolff, Amsterdam
• Reinders, Wachtum Dalen, Drenthe, Nederland († 1863)

• Anna Sies (43), Zierikzee Schouwen-Duiveland Zeeland Nederland
• Anna Jakobsdotter (70), Grundsund (O)
• Benjamin Brubaker (89), Upper Lawn, Lebanon County., Pa
• Antoine BESSETTE (77)
• Albert Brummelman (47), Zwiep
• Alphonsus Lauwens (0), Boschkapelle, Nederland
• Alouisius de Moor (0), Clinge, Hulst, Zeeland, Netherlands
• Antje Uiltjes Veenema (Venema) (69), Wartena, Friesland, Nederland
• Anna Sijs ( Sies ) (43), Zierikzee
• Benjamin Hardin Helm (32), Battle, Ida, Iowa, Verenigde Staten

• 1851 » Henry Arthur Jones, English playwright and critic († 1929)
• 1853 » Chulalongkorn, Siamese king († 1910)
• 1861 » Herbert Putnam, American lawyer and publisher, 8th Librarian of Congress († 1955)
• 1872 » Maurice Gamelin, French general († 1958)
• 1873 » Ferenc Szisz, Hungarian race car driver († 1944)
• 1873 » Sidney Olcott, Canadian-American actor, director, producer, and screenwriter († 1949)
• 1875 » Matthias Erzberger, German publicist and politician († 1921)
• 1876 » Carleton Ellis, American inventor and chemist († 1941)
• 1878 » Francisco Lagos Cházaro, acting president of Mexico (1915) († 1932)
• 1878 » Upton Sinclair, American novelist, critic, and essayist († 1968)

• 1839 » Sir Thomas Hardy, 1st Baronet, English admiral (b. 1769)
• 1840 » José Gaspar Rodríguez de Francia, Paraguayan lawyer and politician, Consul of Paraguay (b. 1766)
• 1845 » Matvei Gedenschtrom, Russian explorer and public servant (b. 1780)
• 1852 » Philander Chase, American bishop and educator, founded Kenyon College (b. 1775)
• 1855 » José Trinidad Reyes, Honduran priest and educator (b. 1797)
• 1863 » Jacob Grimm, German philologist and mythologist (b. 1785)
• 1884 » Leopold Fitzinger, Austrian zoologist and author (b. 1802)
• 1898 » Theodor Fontane, German author and poet (b. 1819)
• 1906 » Robert R. Hitt, American politician, 13th United States Assistant Secretary of State (b. 1834)
• 1908 » Pablo de Sarasate, Spanish violinist and composer (b. 1844)

• 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.
• The Netherlands had about 3.6 million citizens.
• May 23 » The General German Workers' Association, a precursor of the modern Social Democratic Party of Germany, is founded in Leipzig, Kingdom of Saxony.
• June 20 » American Civil War: West Virginia is admitted as the 35th U.S. state.
• July 1 » Keti Koti (Emancipation Day) in Suriname, marking the abolition of slavery by the Netherlands.
• September 8 » American Civil War: In the Second Battle of Sabine Pass, a small Confederate force thwarts a Union invasion of Texas.
• October 15 » American Civil War: The H. L. Hunley, the first submarine to sink a ship, sinks, killing its inventor.
• November 25 » American Civil War: Battle of Missionary Ridge: At Missionary Ridge in Tennessee, Union forces led by General Ulysses S. Grant break the Siege of Chattanooga by routing Confederate troops under General Braxton Bragg.

The temperature on September 20, 1863 was about 11.5 °C. There was 17 mm of rain. The air pressure was 0.5 kgf/m² and came mainly from the southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 93%.