The temperature on July 9, 1914 was between 11.2 °C and 22.1 °C and averaged 16.4 °C. There was 3.7 hours of sunshine (22%). The average windspeed was 2 Bft (weak wind) 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.
February 26 » HMHSBritannic, sister to the RMSTitanic, is launched at Harland and Wolff shipyard in Belfast.
August 12 » World War I: The Battle of Halen a.k.a. Battle of the Silver Helmets a clash between large Belgian and German cavalry formations at Halen, Belgium.
August 14 » World War I: Start of the Battle of Lorraine, an unsuccessful French offensive designed to recover the lost province of Moselle from Germany.
August 17 » World War I: Battle of Stallupönen: The German army of General Hermann von François defeats the Russian force commanded by Paul von Rennenkampf near modern-day Nesterov, Russia.
November 28 » World War I: Following a war-induced closure in July, the New York Stock Exchange re-opens for bond trading.
December 16 » World War I: Admiral Franz von Hipper commands a raid on Scarborough, Hartlepool and Whitby.
Day of death April 11, 1959
The temperature on April 11, 1959 was between 3.3 °C and 12.2 °C and averaged 7.7 °C. There was 10.7 mm of rain during 3.2 hours. There was 3.9 hours of sunshine (29%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 30 » MSHans Hedtoft, said to be the safest ship afloat and "unsinkable" like the RMSTitanic, strikes an iceberg on her maiden voyage and sinks, killing all 95 aboard.
April 8 » The Organization of American States drafts an agreement to create the Inter-American Development Bank.
July 24 » At the opening of the American National Exhibition in Moscow, U.S. Vice President Richard Nixon and Soviet Premier Nikita Khrushchev have a "Kitchen Debate".
September 14 » The Soviet probe Luna 2 crashes onto the Moon, becoming the first man-made object to reach it.
September 25 » Solomon Bandaranaike, Prime Minister of Sri Lanka, is mortally wounded by a Buddhist monk, Talduwe Somarama, and dies the next day.
October 7 » The Soviet probe Luna 3 transmits the first-ever photographs of the far side of the Moon.
When copying data from this family tree, please include a reference to the origin: Maarten Heinemann, "Family tree Heinemann-Kuiper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-heinemann-kuiper/I8564.php : accessed January 11, 2026), "Klaas Boon (1914-1959)".
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