The temperature on April 20, 1918 was between -3.6 °C and 9.8 °C and averaged 3.5 °C. There was 7.7 hours of sunshine (54%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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.
February 1 » Russia adopts the Gregorian calendar.
March 3 » Russia signs the Treaty of Brest-Litovsk, agreeing to withdraw from World War I, and conceding German control of the Baltic States, Belarus and Ukraine. It also conceded Turkish control of Ardahan, Kars and Batumi.
April 20 » Manfred von Richthofen, a.k.a. The Red Baron, shoots down his 79th and 80th victims, his final victories before his death the following day.
July 4 » World War I: The Battle of Hamel, a successful attack by the Australian Corps against German positions near the town of Le Hamel on the Western Front.
October 30 » World War I: Lands of the Crown of Saint Stephen, a state union of Kingdom of Hungary and Triune Kingdom of Croatia, Slavonia and Dalmatia is abolished with decisions of Croatian and Hungarian parliaments
November 27 » The Free Territory of Ukraine is established in Huliaipole.
Day of death April 23, 1983
The temperature on April 23, 1983 was between 8.1 °C and 16.6 °C and averaged 11.6 °C. There was 3.9 mm of rain during 3.4 hours. There was 4.4 hours of sunshine (31%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 22 » The notorious Broadway flop Moose Murders opens and closes on the same night at the Eugene O'Neill Theatre.
May 20 » Church Street bombing: A car bomb planted by Umkhonto we Sizwe explodes on Church Street in South Africa's capital, Pretoria, killing 19 people and injuring 217 others.
July 1 » A North Korean Ilyushin Il-62M jet en route to Conakry Airport in Guinea crashes into the Fouta Djallon mountains in Guinea-Bissau, killing all 23 people on board.
August 21 » Philippine opposition leader Benigno Aquino, Jr. is assassinated at the Manila International Airport (now renamed Ninoy Aquino International Airport in his honor).
October 25 » The United States and its Caribbean allies invade Grenada, six days after Prime Minister Maurice Bishop and several of his supporters are executed in a coup d'état.
November 7 » United States Senate bombing: A bomb explodes inside the United States Capitol. No one is injured, but an estimated $250,000 in damage is caused.
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/I291325.php : accessed February 15, 2026), "Jan Kuper (1918-1983)".
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