The temperature on April 17, 1915 was between 0.4 °C and 12.0 °C and averaged 7.9 °C. There was 0.1 mm of rain. There was 9.5 hours of sunshine (68%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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 19 » German strategic bombing during World War I: German zeppelins bomb the towns of Great Yarmouth and King's Lynn in the United Kingdom killing at least 20 people, in the first major aerial bombardment of a civilian target.
February 22 » World War I: The Imperial German Navy institutes unrestricted submarine warfare.
April 5 » Boxing challenger Jess Willard knocks out Jack Johnson in Havana, Cuba to become the Heavyweight Champion of the World.
June 5 » Denmark amends its constitution to allow women's suffrage.
July 24 » The passenger ship SSEastland capsizes while tied to a dock in the Chicago River. A total of 844 passengers and crew are killed in the largest loss of life disaster from a single shipwreck on the Great Lakes.
August 6 » World War I: Battle of Sari Bair: The Allies mount a diversionary attack timed to coincide with a major Allied landing of reinforcements at Suvla Bay.
Day of marriage May 12, 1939
The temperature on May 12, 1939 was between 7.4 °C and 13.2 °C and averaged 10.1 °C. There was 14.9 mm of rain during 7.5 hours. There was 0.3 hours of sunshine (2%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
March 23 » The Hungarian air force attacks the headquarters of the Slovak air force in Spišská Nová Ves, killing 13 people and beginning the Slovak–Hungarian War.
April 20 » Adolf Hitler's 50th birthday's celebrations in Germany
June 17 » Last public guillotining in France: Eugen Weidmann, a convicted murderer, is executed in Versailles outside the Saint-Pierre prison.
August 27 » First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.
December 18 » World War II: The Battle of the Heligoland Bight, the first major air battle of the war, takes place.
Day of death December 7, 1971
The temperature on December 7, 1971 was between 4.7 °C and 9.5 °C and averaged 6.2 °C. There was 0.2 hours of sunshine (3%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
April 1 » Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh.
July 30 » Apollo program: Apollo 15 Mission: David Scott and James Irwin on the Apollo Lunar Module Falcon land on the Moon with the first Lunar Rover.
September 8 » In Washington, D.C., the John F. Kennedy Center for the Performing Arts is inaugurated, with the opening feature being the premiere of Leonard Bernstein's Mass.
September 21 » Bahrain, Bhutan and Qatar join the United Nations.
November 14 » Mariner 9 enters orbit around Mars.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
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/I166262.php : accessed December 25, 2025), "Ubel Bolt (1915-1971)".
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