January 11 » William Herschel discovers Titania and Oberon, two moons of Uranus.
January 25 » Shays's Rebellion: The rebellion's largest confrontation, outside the Springfield Armory, results in the killing of four rebels and the wounding of twenty.
May 13 » Captain Arthur Phillip leaves Portsmouth, England, with eleven ships full of convicts (the "First Fleet") to establish a penal colony in Australia.
August 6 » Sixty proof sheets of the Constitution of the United States are delivered to the Constitutional Convention in Philadelphia, Pennsylvania.
September 17 » The United States Constitution is signed in Philadelphia.
December 18 » New Jersey becomes the third state to ratify the U.S. Constitution.
Day of death October 17, 1868
The temperature on October 17, 1868 was about 11.4 °C. There was 0.2 mm of rain. The air pressure was 8 kgf/m2 and came mainly from the southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 78%. Source: KNMI
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).
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
May 29 » Mihailo Obrenović III, Prince of Serbia is assassinated.
May 30 » Decoration Day (the predecessor of the modern "Memorial Day") is observed in the United States for the first time after a proclamation by John A. Logan, head of the Grand Army of the Republic (a veterans group).
July 25 » The Wyoming Territory is established.
August 18 » French astronomer Pierre Janssen discovers helium.
December 9 » The first traffic lights are installed, outside the Palace of Westminster in London. Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.
December 10 » The first traffic lights are installed, outside the Palace of Westminster in London. Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.
When copying data from this family tree, please include a reference to the origin: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I6400.php : accessed October 6, 2026), "Klaas Koomen (1787-1868)".
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