April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
December 6 » London becomes the world's first city to host licensed taxicabs.
December 30 » The British Colony of Natal annexes Zululand.
Day of death December 9, 1918
The temperature on December 9, 1918 was between 1.9 °C and 8.8 °C and averaged 5.9 °C. There was 2.4 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 19 » The US Congress establishes time zones and approves daylight saving time.
May 26 » The Democratic Republic of Georgia is established.
June 8 » A solar eclipse is observed at Baker City, Oregon by scientists and an artist hired by the United States Navy.
October 3 » King Boris III of Bulgaria accedes to the throne.
October 28 » First World War: A new Polish government in western Galicia is established, triggering the Polish–Ukrainian War.
December 1 » Transylvania unites with Romania, following the incorporation of Bessarabia (March 27) and Bukovina (November 28), thus concluding the Great Union.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I111452.php : accessed October 9, 2026), "Fokje Koster (1897-1918)".
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