The temperature on April 28, 1915 was between 5.7 °C and 20.1 °C and averaged 12.7 °C. There was 12.8 hours of sunshine (87%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the 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.
February 22 » World War I: The Imperial German Navy institutes unrestricted submarine warfare.
March 20 » Albert Einstein publishes his general theory of relativity.
July 7 » Colombo Town Guard officer Henry Pedris is executed in British Ceylon for allegedly inciting persecution of Muslims.
September 5 » The pacifist Zimmerwald Conference begins.
September 25 » World War I: The Second Battle of Champagne begins.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of marriage April 28, 1943
The temperature on April 28, 1943 was between 2.6 °C and 13.3 °C and averaged 8.9 °C. There was 7.3 hours of sunshine (50%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. 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 23 » World War II: Troops of the British Eighth Army capture Tripoli in Libya from the German–Italian Panzer Army.
February 18 » World War II: The Nazis arrest the members of the White Rose movement.
May 17 » World War II: Dambuster Raids commence by No. 617 Squadron RAF.
July 10 » World War II: Operation Husky begins in Sicily.
July 11 » Massacres of Poles in Volhynia and Eastern Galicia by the Ukrainian Insurgent Army within the Reichskommissariat Ukraine (Volhynia) peak.
October 17 » The Burma Railway (Burma–Thailand Railway) is completed.
Day of death October 3, 1991
The temperature on October 3, 1991 was between 9.8 °C and 17.7 °C and averaged 13.8 °C. There was 1.9 mm of rain during 0.9 hours. There was 3.2 hours of sunshine (28%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
March 15 » Cold War: The Treaty on the Final Settlement with Respect to Germany comes into effect, granting full sovereignty to the Federal Republic of Germany.
May 5 » A riot breaks out in the Mt. Pleasant section of Washington, D.C. after police shoot a Salvadoran man.
August 6 » Tim Berners-Lee releases files describing his idea for the World Wide Web. WWW debuts as a publicly available service on the Internet.
September 9 » Tajikistan declares independence from the Soviet Union.
September 17 » Estonia, North Korea, South Korea, Latvia, Lithuania, the Marshall Islands and Micronesia join the United Nations.
November 14 » Cambodian Prince Norodom Sihanouk returns to Phnom Penh after thirteen years of exile.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I299187.php : accessed February 11, 2026), "Henderikus Schippers (1915-1991)".
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