The temperature on August 21, 1917 was between 7.6 °C and 21.3 °C and averaged 14.7 °C. There was 11.1 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) 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.
February 3 » First World War: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare.
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
July 25 » Sir Robert Borden introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%).
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
October 15 » World War I: Dutch dancer Mata Hari is executed by France for espionage.
Day of marriage May 18, 1940
The temperature on May 18, 1940 was between 8.5 °C and 19.2 °C and averaged 13.4 °C. There was 9.9 hours of sunshine (63%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
May 6 » John Steinbeck is awarded the Pulitzer Prize for his novel The Grapes of Wrath.
June 3 » Franz Rademacher proposes plans to make Madagascar the "Jewish homeland", an idea that had first been considered by 19th century journalist Theodor Herzl.
July 10 » World War II: The Vichy government is established in France.
September 7 » Romania returns Southern Dobruja to Bulgaria under the Treaty of Craiova.
November 20 » World War II: Hungary becomes a signatory of the Tripartite Pact, officially joining the Axis powers.
December 14 » Plutonium (specifically Pu-238) is first isolated at Berkeley, California.
Day of death December 20, 2004
The temperature on December 20, 2004 was between -5.0 °C and 4.0 °C and averaged -1.7 °C. There was 6.6 hours of sunshine (85%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Tuesday, May 27, 2003 to Friday, July 7, 2006 the cabinet Balkenende II, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
May 17 » The first legal same-sex marriages in the U.S. are performed in the state of Massachusetts.
October 29 » The Arabic-language news network Al Jazeera broadcasts an excerpt from a 2004 Osama bin Laden video in which the terrorist leader first admits direct responsibility for the September 11, 2001 attacks and references the 2004 U.S. presidential election.
November 21 » Dominica is hit by the most destructive earthquake in its history. The northern half of the island sustains the most damage, especially the town of Portsmouth. In neighboring Guadeloupe, one person is killed.
December 5 » The Civil Partnership Act comes into effect in the United Kingdom, and the first civil partnership is registered there.
December 27 » Radiation from an explosion on the magnetar SGR 1806-20 reaches Earth. It is the brightest extrasolar event known to have been witnessed on the planet.
December 30 » A fire in the República Cromagnon nightclub in Buenos Aires, Argentina kills 194.
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/I121956.php : accessed February 19, 2026), "Leendert Adema (1917-2004)".
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