The temperature on November 13, 1920 was between 0.5 °C and 6.7 °C and averaged 3.4 °C. There was 1.9 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 16 » Zeta Phi Beta Sorority Incorporated was founded on the campus of Howard University.
January 19 » The United States Senate votes against joining the League of Nations.
February 13 » The Negro National League is formed.
July 29 » Construction of the Link River Dam begins as part of the Klamath Reclamation Project.
November 2 » In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.
December 11 » Irish War of Independence: In retaliation for a recent IRA ambush, British forces burn and loot numerous buildings in Cork city. Many civilians report being beaten, shot at, robbed and verbally abused by British forces.
Day of death December 7, 1961
The temperature on December 7, 1961 was between -1.1 °C and 3.6 °C and averaged 0.8 °C. There was 1.3 mm of rain during 0.3 hours. There was 4.7 hours of sunshine (59%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west. Source: KNMI
January 11 » Throgs Neck Bridge over the East River, linking New York City's boroughs of The Bronx and Queens, opens to road traffic.
January 20 » John F. Kennedy is inaugurated the 35th President of the United States of America, becoming the second youngest man to take the office, and the first Catholic.
July 20 » French military forces break the Tunisian siege of Bizerte.
August 10 » Vietnam War: The U.S. Army begins Operation Ranch Hand, spraying an estimated 20million US gallons (76,000m) of defoliants and herbicides over rural areas of South Vietnam in an attempt to deprive the Viet Cong of food and vegetation cover.
September 10 » In the Italian Grand Prix, a crash causes the death of German Formula One driver Wolfgang von Trips and 13 spectators who are hit by his Ferrari, the deadliest accident in F1 history.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
Day of burial December 11, 1961
The temperature on December 11, 1961 was between 8.7 °C and 13.9 °C and averaged 11.9 °C. There was 3.7 mm of rain during 2.0 hours. There was 0.3 hours of sunshine (4%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 9 » Sputnik 9 successfully launches, carrying a dog and a human dummy, and demonstrating that the Soviet Union was ready to begin human spaceflight.
April 17 » Bay of Pigs Invasion: A group of Cuban exiles financed and trained by the CIA lands at the Bay of Pigs in Cuba with the aim of ousting Fidel Castro.
May 30 » The long-time Dominican dictator Rafael Trujillo is assassinated in Santo Domingo, Dominican Republic.
July 12 » Indian city Pune floods due to failure of the Khadakwasla and Panshet dams, killing at least two thousand people.
October 20 » The Soviet Union performs the first armed test of a submarine-launched ballistic missile, launching an R-13 from a Golf-class submarine.
November 21 » The "La Ronde" opens in Honolulu, first revolving restaurant in the United States.
When copying data from this family tree, please include a reference to the origin: Yvonne Luberti, "Family tree Trebert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-trebert/I121.php : accessed January 4, 2026), "Derk Langenkamp (1920-1961)".
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