The temperature on July 5, 1918 was between 7.5 °C and 19.3 °C and averaged 14.2 °C. There was 4.7 hours of sunshine (28%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
March 16 » Finnish Civil War: Battle of Länkipohja is infamous for its bloody aftermath as the Whites executed 70–100 capitulated Reds.
May 28 » The Azerbaijan Democratic Republic and the First Republic of Armenia declare their independence.
July 6 » The Left SR uprising in Russia starts with the assassination of German ambassador Wilhelm von Mirbach by Cheka members.
September 10 » Russian Civil War: The Red Army captures Kazan.
October 26 » Erich Ludendorff, quartermaster-general of the Imperial German Army, is dismissed by Kaiser Wilhelm II for refusing to cooperate in peace negotiations.
November 1 » Western Ukraine separates from Austria-Hungary.
Day of death September 15, 1997
The temperature on September 15, 1997 was between 9.2 °C and 18.8 °C and averaged 14.0 °C. There was 5.6 hours of sunshine (44%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
January 19 » Yasser Arafat returns to Hebron after more than 30 years and joins celebrations over the handover of the last Israeli-controlled West Bank city.
April 22 » Haouch Khemisti massacre in Algeria where 93 villagers are killed.
June 5 » The Second Republic of the Congo Civil War begins.
July 20 » The fully restored USSConstitution (a.k.a. Old Ironsides) celebrates its 200th birthday by setting sail for the first time in 116 years.
August 3 » Oued El-Had and Mezouara massacre in Algeria: A total of 116 villagers killed, 40 in Oued El-Had and 76 in Mezouara.
September 7 » Maiden flight of the Lockheed Martin F-22 Raptor.
When copying data from this family tree, please include a reference to the origin: Gert Pieters, "Family tree Koops", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-koops/I69.php : accessed January 2, 2026), "Hendrik Duinkerken (1918-1997)".
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