The temperature on February 11, 1915 was between -0.3 °C and 4.9 °C and averaged 2.8 °C. There was 3.1 mm of rain. The average windspeed was 3 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.
March 20 » Albert Einstein publishes his general theory of relativity.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
June 5 » Denmark amends its constitution to allow women's suffrage.
July 25 » RFC Captain Lanoe Hawker becomes the first British pursuit aviator to earn the Victoria Cross.
July 28 » The United States begins a 19-year occupation of Haiti.
August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
Day of death May 5, 1963
The temperature on May 5, 1963 was between 3.3 °C and 13.6 °C and averaged 9.1 °C. There was 0.4 mm of rain during 0.9 hours. There was 3.7 hours of sunshine (24%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
May 8 » South Vietnamese soldiers under the Roman Catholic President Ngo Dinh Diem open fire on Buddhists defying a ban on the flying of the Buddhist flag on Vesak, killing nine and sparking the Buddhist crisis.
June 16 » Soviet Space Program: Vostok 6 mission: Cosmonaut Valentina Tereshkova becomes the first woman in space.
July 26 » The Organisation for Economic Co-operation and Development votes to admit Japan.
September 25 » Lord Denning releases the UK government's official report on the Profumo affair.
October 10 » France cedes control of the Bizerte naval base to Tunisia.
November 1 » The Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.
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/I120912.php : accessed October 15, 2026), "Hiltje Poelstra (1915-1963)".
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