January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
May 22 » The Associated Press is formed in New York City as a non-profit news cooperative.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage April 13, 1918
The temperature on April 13, 1918 was between 5.4 °C and 7.7 °C and averaged 6.6 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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.
July 12 » The Imperial Japanese Navy battleship Kawachi blows up at Shunan, western Honshu, Japan, killing at least 621.
September 15 » World War I: Allied troops break through the Bulgarian defenses on the Macedonian front.
November 3 » Austria-Hungary enters into the Armistice of Villa Giusti with the Allies, and the Habsburg-ruled empire dissolves.
November 4 » World War I: The Armistice of Villa Giusti between Italy and Austria-Hungary is implemented.
November 14 » Czechoslovakia becomes a republic.
November 21 » A pogrom takes place in Lwów (now Lviv); over three days, at least 50 Jews and 270 Ukrainian Christians are killed by Poles.
Day of death November 20, 1918
The temperature on November 20, 1918 was between -1.6 °C and 6.9 °C and averaged 1.8 °C. There was 0.8 hours of sunshine (9%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. 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.
June 10 » The Austro-Hungarian battleship SMSSzent István sinks off the Croatian coast after being torpedoed by an Italian MAS motorboat; the event is recorded by camera from a nearby vessel.
June 26 » World War I: Allied forces under John J. Pershing and James Harbord defeat Imperial German forces under Wilhelm, German Crown Prince in the Battle of Belleau Wood.
July 9 » In Nashville, Tennessee, an inbound local train collides with an outbound express, killing 101 and injuring 171 people, making it the deadliest rail accident in United States history.
August 13 » Women enlist in the United States Marine Corps for the first time. Opha May Johnson is the first woman to enlist.
August 29 » World War I: Bapaume taken by the New Zealand Division in the Hundred Days Offensive.
September 26 » World War I: The Meuse-Argonne Offensive began which would last until the total surrender of German forces.
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/I2217.php : accessed October 3, 2026), "Albertje Jongsma (1900-1918)".
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