The temperature on June 15, 1919 was between 2.5 °C and 22.2 °C and averaged 13.7 °C. There was 14.0 hours of sunshine (84%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
April 13 » Jallianwala Bagh massacre: British Indian Army troops lead by Brigadier-General Reginald Dyer killed approx 379-1000 unarmed demonstrators including men and women in Amritsar, India; and approximately 1,500 injured.
May 16 » A naval Curtiss NC-4 aircraft commanded by Albert Cushing Read leaves Trepassey, Newfoundland, for Lisbon via the Azores on the first transatlantic flight.
July 11 » The eight-hour day and free Sunday become law for workers in the Netherlands.
July 23 » Prince Regent Aleksander Karađorđević signs the decree establishing the University of Ljubljana
October 16 » Adolf Hitler delivers his first public address at a meeting of the German Workers' Party.
November 7 » The first Palmer Raid is conducted on the second anniversary of the Russian Revolution. Over 10,000 suspected communists and anarchists are arrested in 23 U.S. cities.
Day of death February 20, 1972
The temperature on February 20, 1972 was between 0.6 °C and 2.3 °C and averaged 1.6 °C. There was 0.3 mm of rain during 0.2 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
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.
April 16 » Apollo program: The launch of Apollo 16 from Cape Canaveral, Florida.
June 9 » Severe rainfall causes a dam in the Black Hills of South Dakota to burst, creating a flood that kills 238 people and causes $160million in damage.
June 23 » Title IX of the United States Civil Rights Act of 1964 is amended to prohibit sexual discrimination to any educational program receiving federal funds.
September 9 » In Kentucky's Mammoth Cave National Park, a Cave Research Foundation exploration and mapping team discovers a link between the Mammoth and Flint Ridge cave systems, making it the longest known cave passageway in the world.
October 29 » The three surviving perpetrators of the Munich massacre are released from prison in exchange for the hostages of hijacked Lufthansa Flight 615.
December 14 » Apollo program: Eugene Cernan is the last person to walk on the moon, after he and Harrison Schmitt complete the third and final extravehicular activity (EVA) of the Apollo 17 mission.
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/I86642.php : accessed February 9, 2026), "Leonard Grimmius (1919-1972)".
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