About the day » Saturday April 20, 1861Calender converter

• Alida Wilhelmina Stroethoff, Amsterdam († 1863)
• Alfred Carel Johan van der Sloot
• Abraham Hoepelman, Amsterdam,Gemeente Amsterdam, Noord-Holland, Nederland († 1942)
• Adolphe Edouard Joseph FRAPPART, Flines-lès-Mortagne... Hauts de France
• Antonia Zijlmans, Raamsdonkveer († 1919)
• Aaltje Veen, Valtherveen († 1905)
• Adrianus van DIEMEN, Wilnis († 1934)
• Minnebo, Laarne
• Angela Adelheid Brink, Haar, Haren (Ems) († 1940)
• Aaltje Veen, Valtherveen-Gem. Odoorn († 1905)

• Adrianus Bruijnen (72)
• Aagje SCHOL Ldr (19)
• Abraham KOOMEN (29), Uitgeest en Markenbinnen, Noord-Holland, Nederland
• Albertina Jacobs (64), Temse
• Adriana Verhage (13), Haamstede
• Adriaan van Woensel (1), s Heerenhoek
• Alexandru Mavrocordato (86)
• Aaltje TUIN (35), Uffelte, gemeente Havelte
• Anna Maria Holtgreive (4)
• Alida Eijsendoorn (32), Utrecht

• 1840 » Odilon Redon, French painter and illustrator († 1916)
• 1850 » Daniel Chester French, American sculptor, designed the Lincoln statue († 1931)
• 1851 » Alexander Dianin, Russian chemist († 1918)
• 1851 » Siegmund Lubin, Polish-American businessman, founded the Lubin Manufacturing Company († 1923)
• 1860 » Justinien de Clary, French target shooter († 1933)
• 1871 » Sydney Chapman, English economist and civil servant († 1951)
• 1873 » James Harcourt, English character actor († 1951)
• 1875 » Vladimir Vidrić, Croatian poet and lawyer († 1909)
• 1879 » Paul Poiret, French fashion designer († 1944)
• 1882 » Holland Smith, American general († 1967)

• 1831 » John Abernethy, English surgeon and anatomist (b. 1764)
• 1873 » William Tite, English architect, designed the Royal Exchange (b. 1798)
• 1874 » Alexander H. Bailey, American lawyer, judge, and politician (b. 1817)
• 1881 » William Burges, English architect and designer (b. 1827)
• 1886 » Charles-François-Frédéric, marquis de Montholon-Sémonville, French general and diplomat, French ambassador to the United States (b. 1814)
• 1887 » Muhammad Sharif Pasha, Greek-Egyptian politician, 2nd Prime Minister of Egypt (b. 1826)
• 1899 » Joseph Wolf, German ornithologist and illustrator (b. 1820)
• 1902 » Joaquim de Sousa Andrade, Brazilian poet and educator (b. 1833)
• 1912 » Bram Stoker, Anglo-Irish novelist and critic, created Count Dracula (b. 1847)
• 1918 » Karl Ferdinand Braun, German-American physicist and academic, Nobel Prize laureate (b. 1850)

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

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

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
• From March 14, 1861 till January 31, 1862 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Loudon with the prime ministers Mr. J.P.P. baron Van Zuijlen van Nijevelt (conservatief-liberaal) and Mr. J. Loudon (liberaal).
• The Netherlands had about 3.6 million citizens.
• February 13 » Italian unification: The Siege of Gaeta ends with the capitulation of the defending fortress, effectively bringing an end of the Kingdom of the Two Sicilies.
• March 20 » An earthquake destroys Mendoza, Argentina.
• April 12 » American Civil War: Battle of Fort Sumter. The war begins with Confederate forces firing on Fort Sumter, in the harbor of Charleston, South Carolina.
• July 25 » American Civil War: The United States Congress passes the Crittenden–Johnson Resolution, stating that the war is being fought to preserve the Union and not to end slavery.
• September 6 » American Civil War: Forces under Union General Ulysses S. Grant bloodlessly capture Paducah, Kentucky, giving the Union control of the Tennessee River's mouth.
• November 7 » The first Melbourne Cup horse race is held in Melbourne, Australia.

The temperature on April 20, 1861 was about 9.4 °C. The air pressure was 1 kgf/m² and came mainly from the south-southeast. The airpressure was 77 cm mercury. The atmospheric humidity was 56%.