About the day » Sunday September 23, 1787Calender converter

• Adriana Cornelisse Vogelaar, Dinteloord,, Noord-Brabant, Nederland († 1845)
• Andries van Hoeve
• Anna Catharina Koopmann, Hamminkeln-Dingden
• Anna Vliegenthart, IJsselmonde, Zuid-Holland, Nederland
• Aaltje Adams, Bellingwolde (gem. Westerwolde)
• Adriana Cornelisse Vogelaar, Dinteloord († 1845)
• Aafke Jans
• Anna Wilhelmina Hovestadt, Rhede
• Abraham Estes, Spotsylvania County, VA († 1825)

• Berendiena Wolterink, Usselo, gericht Enschede, Overijssel, Nederland
• Ann Jordan (47), Cumberland Co, Virginia, Verenigde Staten
• Adrianus van der Kroon (58)
• Jacobus Joannes Castelijns, Azië
• Floris Taekes (52), Raard
• Dirk Jansz. de Jongh, Poeldijk, Zuid-Holland, Nederland
• Engeltje Schol, Egmond aan Zee, Noord-Holland, Nederland
• Catharina Michiels (58), Meerbeke
• Geertrui Sluiters (27), Nijstad
• JOANNA THOMAS (0), Schilde

• 1740 » Empress Go-Sakuramachi of Japan († 1813)
• 1771 » Emperor Kōkaku of Japan († 1840)
• 1778 » Mariano Moreno, Argentinian journalist, lawyer, and politician († 1811)
• 1781 » Princess Juliane of Saxe-Coburg-Saalfeld († 1860)
• 1791 » Johann Franz Encke, German astronomer and academic († 1865)
• 1791 » Theodor Körner, German soldier and author († 1813)
• 1800 » William Holmes McGuffey, American author and academic († 1873)
• 1819 » Hippolyte Fizeau, French physicist and academic († 1896)
• 1823 » John Colton, English-Australian politician, 13th Premier of South Australia († 1902)
• 1838 » Victoria Woodhull, American journalist and activist († 1927)

• 1728 » Christian Thomasius, German jurist and philosopher (b. 1655)
• 1738 » Herman Boerhaave, Dutch botanist and physician (b. 1668)
• 1764 » Robert Dodsley, English poet and playwright (b. 1703)
• 1773 » Johan Ernst Gunnerus, Norwegian bishop and botanist (b. 1718)
• 1789 » John Rogers, American lawyer and politician (b. 1723)
• 1835 » Vincenzo Bellini, Italian composer (b. 1801)
• 1846 » John Ainsworth Horrocks, English-Australian explorer (b. 1818)
• 1850 » José Gervasio Artigas, Uruguayan general and politician (b. 1764)
• 1851 » Émilie Gamelin, Canadian nun, founded the Sisters of Providence (b. 1800)
• 1870 » Prosper Mérimée, French archaeologist and historian (b. 1803)

• 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)
• May 13 » Captain Arthur Phillip leaves Portsmouth, England, with eleven ships full of convicts (the "First Fleet") to establish a penal colony in Australia.
• May 25 » After a delay of 11 days, the United States Constitutional Convention formally convenes in Philadelphia after a quorum of seven states is secured.
• July 13 » The Continental Congress enacts the Northwest Ordinance establishing governing rules for the Northwest Territory. It also establishes procedures for the admission of new states and limits the expansion of slavery.
• September 17 » The United States Constitution is signed in Philadelphia.
• October 29 » Mozart's opera Don Giovanni receives its first performance in Prague.
• December 18 » New Jersey becomes the third state to ratify the U.S. Constitution.

The temperature on September 23, 1787 was about 15.0 °C.