January 31 » Czechoslav Trade Union Association is founded in Prague.
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.
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 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage August 14, 1918
The temperature on August 14, 1918 was between 6.8 °C and 22.1 °C and averaged 15.9 °C. There was 12.7 hours of sunshine (86%). The average windspeed was 2 Bft (weak wind) 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.
January 8 » U.S. President Woodrow Wilson announces his "Fourteen Points" for the aftermath of World War I.
April 9 » World War I: The Battle of the Lys: The Portuguese Expeditionary Corps is crushed by the German forces during what is called the Spring Offensive on the Belgian region of Flanders.
September 15 » World War I: Allied troops break through the Bulgarian defenses on the Macedonian front.
October 11 » The 7.1 Mw San Fermín earthquake shakes Puerto Rico. The quake and resulting tsunami kill up to 116 people.
October 29 » The German High Seas Fleet is incapacitated when sailors mutiny on the night of the 29th-30th, an action which would trigger the German Revolution of 1918–19.
November 18 » Latvia declares its independence from Russia.
Day of death October 24, 1963
The temperature on October 24, 1963 was between 11.5 °C and 15.7 °C and averaged 13.5 °C. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: R. Ratsma, "Family tree diverse families", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ratsma/I154.php : accessed January 6, 2026), "Hendrik Jacobus Roosenburg (1897-1963)".
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