The temperature on December 10, 1917 was between -0.2 °C and 7.9 °C and averaged 3.3 °C. There was 3.3 hours of sunshine (42%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. 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.
April 2 » World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
June 11 » King Alexander assumes the throne of Greece after his father, Constantine I, abdicates under pressure from allied armies occupying Athens.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
December 11 » World War I: British General Edmund Allenby enters Jerusalem on foot and declares martial law.
December 18 » The resolution containing the language of the Eighteenth Amendment to enact Prohibition is passed by the United States Congress.
Day of marriage May 6, 1944
The temperature on May 6, 1944 was between 1.5 °C and 10.1 °C and averaged 6.9 °C. There was 2.9 mm of rain during 2.9 hours. There was 5.3 hours of sunshine (35%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. 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 29 » In Bologna, Italy, the Anatomical theatre of the Archiginnasio is completely destroyed in an air-raid, during the Second World War.
March 18 » Mount Vesuvius in Italy erupts, killing 26 people, causing thousands to flee their homes, and destroying dozens of Allied bombers.
April 10 » Rudolf Vrba and Alfréd Wetzler escape from Birkenau death camp.
August 2 » World War II: The largest trade convoy of the world wars arrives safely in the Western Approaches.
August 7 » IBM dedicates the first program-controlled calculator, the Automatic Sequence Controlled Calculator (known best as the Harvard Mark I).
November 24 » World War II: The 73rd Bombardment Wing launches the first attack on Tokyo from the Northern Mariana Islands.
Day of death September 9, 1944
The temperature on September 9, 1944 was between 5.8 °C and 14.8 °C and averaged 9.9 °C. There was 8.0 mm of rain during 3.5 hours. There was 4.6 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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 22 » World War II: The Allies commence Operation Shingle, an assault on Anzio and Nettuno, Italy.
February 14 » World War II: In the Action of 14 February 1944, a Royal Navy submarine sinks a German-controlled Italian submarine in the Strait of Malacca.
April 22 » The 1st Air Commando Group using Sikorsky R-4 helicopters stage the first use of helicopters in combat with combat search and rescue operations in the China Burma India Theater.
August 6 » The Warsaw Uprising occurs on August 1. It is brutally suppressed and all able-bodied men in Kraków are detained afterwards to prevent a similar uprising, the Kraków Uprising, that was planned but never carried out.
August 21 » Dumbarton Oaks Conference, prelude to the United Nations, begins.
September 17 » World War II: German forces are attacked by the Allies in the Battle of San Marino.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P18293.php : accessed January 3, 2026), "William John Robert Cavendish (1917-1944)".
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