The temperature on April 14, 1915 was between 1.3 °C and 10.6 °C and averaged 5.7 °C. There was 1.7 mm of rain. There was 3.6 hours of sunshine (26%). The average windspeed was 2 Bft (weak wind) and was prevailing from the 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 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
January 25 » Alexander Graham Bell inaugurates U.S. transcontinental telephone service, speaking from New York to Thomas Watson in San Francisco.
February 19 » World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.
April 5 » Boxing challenger Jess Willard knocks out Jack Johnson in Havana, Cuba to become the Heavyweight Champion of the World.
May 22 » Three trains collide in the Quintinshill rail disaster near Gretna Green, Scotland, killing 227 people and injuring 246.
July 28 » The United States begins a 19-year occupation of Haiti.
Day of death April 9, 1973
The temperature on April 9, 1973 was between -1.3 °C and 7.0 °C and averaged 3.1 °C. There was 5.9 hours of sunshine (44%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 23 » United States President Richard Nixon announces that a peace accord has been reached in Vietnam.
February 27 » The American Indian Movement occupies Wounded Knee in protest of the federal government.
April 6 » Launch of Pioneer 11 spacecraft.
September 11 » A coup in Chile headed by General Augusto Pinochet topples the democratically elected president Salvador Allende. Pinochet exercises dictatorial power until ousted in a referendum in 1988, staying in power until 1990.
September 20 » Billie Jean King beats Bobby Riggs in the Battle of the Sexes tennis match at the Houston Astrodome.
December 15 » The American Psychiatric Association votes 13–0 to remove homosexuality from its official list of psychiatric disorders, the DSM-II.
When copying data from this family tree, please include a reference to the origin: Ton Van Es, "Family tree van Es", database, Genealogy Online (https://www.genealogieonline.nl/van-es-stamboom/I9919.php : accessed February 16, 2026), "Christoffel Zweistra (1915-1973)".
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