The temperature on April 1, 1915 was between -4.0 °C and 11.5 °C and averaged 3.7 °C. There was 10.9 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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.
January 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
April 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
July 28 » The United States begins a 19-year occupation of Haiti.
August 17 » Jewish American Leo Frank is lynched in Marietta, Georgia after a 13-year-old girl is murdered.
Day of marriage May 30, 1947
The temperature on May 30, 1947 was between 12.6 °C and 26.4 °C and averaged 20.4 °C. There was 13.8 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 1 » Cold War: The American and British occupation zones in Allied-occupied Germany, after World War II, merge to form the Bizone, which later (with the French zone) became part of West Germany.
April 9 » United Nations Security Council Resolution 22 relating to Corfu Channel incident is adopted.
June 5 » Cold War: Marshall Plan: In a speech at Harvard University, the United States Secretary of State George Marshall calls for economic aid to war-torn Europe.
October 14 » Chuck Yeager becomes the first person to exceed the speed of sound.
November 13 » The Soviet Union completes development of the AK-47, one of the first proper assault rifles.
December 23 » The transistor is first demonstrated at Bell Laboratories.
Day of death October 21, 1991
The temperature on October 21, 1991 was between -0.7 °C and 11.1 °C and averaged 4.9 °C. There was -0.1 mm of rain. There was 3.9 hours of sunshine (38%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northwest. 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.
January 9 » Representatives from the United States and Iraq meet at the Geneva Peace Conference to try to find a peaceful resolution to the Iraqi invasion of Kuwait.
January 13 » Soviet Union troops attack Lithuanian independence supporters in Vilnius, killing 14 people and wounding around 1000 others.
August 25 » Belarus gains its independence from the Soviet Union.
August 25 » The Battle of Vukovar begins. An 87-day siege of Vukovar by the Yugoslav People's Army (JNA), supported by various Serb paramilitary forces, between August and November 1991 (during the Croatian War of Independence).
October 7 » Croatian War of Independence: Bombing of Banski dvori in Zagreb, Croatia.
December 31 » All official Soviet Union institutions have ceased operations by this date five days after the Soviet Union is officially dissolved.
When copying data from this family tree, please include a reference to the origin: Anne Jan Groeneveld, "Family tree Donker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-donker/R15.php : accessed February 27, 2026), "Jan Kornelis Groeneveld (1915-1991)".
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