April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
November 1 » A picture showing the bare breasts of a woman appears in National Geographic magazine for the first time.
November 27 » Also sprach Zarathustra by Richard Strauss is first performed.
Day of marriage May 18, 1918
The temperature on May 18, 1918 was between 11.7 °C and 26.0 °C and averaged 18.6 °C. There was 12.1 hours of sunshine (77%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. 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 26 » Finnish Civil War: A group of Red Guards hangs a red lantern atop the tower of Helsinki Workers' Hall to symbolically mark the start of the war.
March 31 » Massacre of ethnic Azerbaijanis is committed by allied armed groups of Armenian Revolutionary Federation and Bolsheviks. Nearly 12,000 Azerbaijani Muslims are killed.
May 28 » The Azerbaijan Democratic Republic and the First Republic of Armenia declare their independence.
June 8 » A solar eclipse is observed at Baker City, Oregon by scientists and an artist hired by the United States Navy.
July 6 » The Left SR uprising in Russia starts with the assassination of German ambassador Wilhelm von Mirbach by Cheka members.
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 September 11, 1942
The temperature on September 11, 1942 was between 6.4 °C and 24.4 °C and averaged 16.2 °C. There was 0.1 mm of rain. There was 11.1 hours of sunshine (85%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 20 » World War II: At the Wannsee Conference held in the Berlin suburb of Wannsee, senior Nazi German officials discuss the implementation of the "Final Solution to the Jewish question".
February 9 » World War II: Top United States military leaders hold their first formal meeting to discuss American military strategy in the war.
March 14 » Anne Miller becomes the first American patient to be treated with penicillin, under the care of Orvan Hess and John Bumstead.
August 8 » Quit India Movement is launched in India against the British rule in response to Mohandas Gandhi's call for swaraj or complete independence.
August 21 » World War II: The Guadalcanal Campaign: American forces defeat an attack by Imperial Japanese Army soldiers in the Battle of the Tenaru.
September 23 » World War II: The Matanikau action on Guadalcanal begins: U.S. Marines attack Japanese units along the Matanikau River.
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/I12477.php : accessed December 26, 2025), "Tjeertdina Kooistra (1896-1942)".
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