The temperature on February 20, 1923 was between -3.7 °C and -2.1 °C and averaged -3.0 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 10 » Texas Tech University is founded as Texas Technological College in Lubbock, Texas
March 20 » The Arts Club of Chicago hosts the opening of Pablo Picasso's first United States showing, entitled Original Drawings by Pablo Picasso, becoming an early proponent of modern art in the United States.
June 27 » Capt. Lowell H. Smith and Lt. John P. Richter perform the first ever aerial refueling in a DH.4B biplane.
September 8 » Honda Point disaster: Nine US Navy destroyers run aground off the California coast. Seven are lost, and twenty-three sailors killed.
October 6 » The Turkish National Movement enters Constantinople.
December 21 » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Day of death November 21, 1968
The temperature on November 21, 1968 was between 2.7 °C and 7.6 °C and averaged 5.2 °C. The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
April 11 » Assassination attempt on Rudi Dutschke, leader of the German student movement.
April 20 » English politician Enoch Powell makes his controversial "Rivers of Blood" speech.
May 12 » Vietnam War: North Vietnamese and Viet Cong forces attack Australian troops defending Fire Support Base Coral.
November 11 » Vietnam War: Operation Commando Hunt initiated. The goal is to interdict men and supplies on the Ho Chi Minh trail, through Laos into South Vietnam.
December 20 » The Zodiac Killer kills Betty Lou Jenson and David Faraday in Vallejo, California.
December 23 » The 82 sailors from the USSPueblo are released after eleven months of internment in North Korea.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I7433.php : accessed March 15, 2026), "Eugene Harold Knippenberg (1923-1968)".
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