The temperature on December 3, 1918 was between 4.9 °C and 10.6 °C and averaged 7.6 °C. There was 5.3 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the 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 17 » Finnish Civil War: The first serious battles take place between the Red Guards and the White Guard.
March 31 » Daylight saving time goes into effect in the United States for the first time.
July 15 » World War I: The Second Battle of the Marne begins near the River Marne with a German attack.
August 29 » World War I: Bapaume taken by the New Zealand Division in the Hundred Days Offensive.
November 11 » Józef Piłsudski assumes supreme military power in Poland - symbolic first day of Polish independence.
November 23 » Heber J. Grant succeeds Joseph F. Smith as the seventh president of The Church of Jesus Christ of Latter-day Saints.
Day of death April 19, 1938
The temperature on April 19, 1938 was between -0.4 °C and 8.5 °C and averaged 4.3 °C. There was 6.1 mm of rain during 3.2 hours. There was 2.2 hours of sunshine (16%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
February 18 » Second Sino-Japanese War: During the Nanking Massacre, the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee", and the safety zone in place for refugees falls apart.
July 10 » Howard Hughes begins a 91-hour airplane flight around the world that will set a new record.
August 18 » The Thousand Islands Bridge, connecting New York, United States with Ontario, Canada over the Saint Lawrence River, is dedicated by U.S. President Franklin D. Roosevelt.
September 12 » Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
November 16 » LSD is first synthesized by Albert Hofmann from ergotamine at the Sandoz Laboratories in Basel.
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/I141208.php : accessed December 30, 2025), "Pier Koopmans (1918-1938)".
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