About the day » Saturday December 9, 1780Calender converter

• Anna elisabeth Vercammen, Duffel, Antwerpen, België
• Cornelia Johannes, Leeuwarden († 1859)
• Alida Eenbergen, Rotterdam
• Andreas Vrancken, Rillaar, Vlaams-Brabant, België († 1832)
• Anna Elisabeth Moermans, Viersel († 1781)
• Cornelis Woutersz Boer, Gouderak, Zuid-Holland, Nederland († 1865)
• Anna Maria Höfer, Leutesdorf (DE) († 1821)
• Dirk Hoolwerf, Bunschoten
• Alexander Numan, Baflo († 1852)
• Catharina Elisabeth de Crauw, Grevenbicht († 1783)

• Guillaume Ignace de Saint Vaast (82)
• Arnoldus WILMINK (50), Wintelre
• Adriana Sophia Gockinga (63), Groningen, Ossenmarkt (geregistreerd)
• Alexis VILLEMAIN (35), Hanvec, 29078, Finistère, Bretagne, France
• Gertrudis Palmen (73), Born
• David Caldwell (72), Near Caldwell Creek, Mecklenburg County, North Carolina, United States
• Gerardus Pijpers (54), Geulle, Meerssen
• Andrisina (Anna Andrea) Cole, Sint-Gillis (Waas)
• Beka Block (78)
• Gerardus Pijpers (54), Geulle (Meerssen), Limburg, Nederland

• 1728 » Pietro Alessandro Guglielmi, Italian composer († 1804)
• 1742 » Carl Wilhelm Scheele, Swedish Pomeranian and German pharmaceutical chemist († 1786)
• 1745 » Maddalena Laura Sirmen, Italian violinist and composer († 1818)
• 1748 » Claude Louis Berthollet, French chemist and academic († 1822)
• 1752 » Antoine Étienne de Tousard, French general and engineer († 1813)
• 1779 » Tabitha Babbitt, American tool maker and inventor († 1853)
• 1787 » John Dobson, English architect, designed Eldon Square and Lilburn Tower († 1865)
• 1806 » Jean-Olivier Chénier, Canadian physician († 1838)
• 1813 » Thomas Andrews, Irish chemist and physicist († 1885)
• 1837 » Émile Waldteufel, French pianist, composer, and conductor († 1915)

• 1674 » Edward Hyde, 1st Earl of Clarendon, English historian and politician, Chancellor of the Exchequer (b. 1609)
• 1706 » Peter II of Portugal (b. 1648)
• 1718 » Vincenzo Coronelli, Italian monk and cartographer (b. 1650)
• 1761 » Tarabai, Queen of Chatrapati Rajaram (b. 1675)
• 1793 » Yolande de Polastron, French-Austrian educator (b. 1749)
• 1798 » Johann Reinhold Forster, German pastor, botanist, and ornithologist (b. 1729)
• 1830 » Heinrich Christian Friedrich Schumacher, Danish surgeon, botanist, and academic (b. 1757)
• 1854 » Almeida Garrett, Portuguese journalist and author (b. 1799)
• 1858 » Robert Baldwin, Canadian lawyer and politician, 3rd Premier of Canada West (b. 1804)
• 1887 » Mahmadu Lamine, Senegalese religious leader

1. Jan
2. Johannes
3. Cornelis
4. Hendrik
5. Pieter
6. Willem
7. Joannes
8. Jacob
9. Gerrit
10. Petrus
11. Jacobus
12. Dirk
13. Jean
14. John
15. Klaas
16. Abraham

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

• Erfstadhouder Prins Willem V (Willem Batavus) (Huis van Oranje-Nassau) was from 1751 till 1795 sovereign of the Netherlands (also known as Republiek der Zeven Verenigde Nederlanden)
• March 17 » American Revolution: George Washington grants the Continental Army a holiday "as an act of solidarity with the Irish in their fight for independence".
• June 23 » American Revolution: Battle of Springfield fought in and around Springfield, New Jersey (including Short Hills, formerly of Springfield, now of Millburn Township).
• September 21 » American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
• October 10 » The Great Hurricane of 1780 kills 20,000–30,000 in the Caribbean.
• November 5 » French-American forces under Colonel LaBalme are defeated by Miami Chief Little Turtle.
• November 9 » American Revolutionary War: In the Battle of Fishdam Ford a force of British and Loyalist troops fail in a surprise attack against the South Carolina Patriot militia under Brigadier General Thomas Sumter.

The temperature on December 9, 1780 was about 4.0 °C. Wind direction mainly northwest. Weather type: omtrent helder.