The temperature on April 20, 1912 was between 3.4 °C and 19.5 °C and averaged 12.7 °C. There was 9.3 hours of sunshine (66%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
April 17 » Russian troops open fire on striking goldfield workers in northeast Siberia, killing at least 150.
June 8 » Carl Laemmle incorporates Universal Pictures.
October 17 » Bulgaria, Greece and Serbia declare war on the Ottoman Empire, joining Montenegro in the First Balkan War.
Day of marriage February 14, 1952
The temperature on February 14, 1952 was between -2.6 °C and 2.9 °C and averaged -0.3 °C. There was 0.2 mm of rain during 1.1 hours. There was 2.3 hours of sunshine (23%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
February 20 » Emmett Ashford becomes the first African-American umpire in organized baseball by being authorized to be a substitute umpire in the Southwestern International League.
April 15 » First flight of the Boeing B-52 Stratofortress.
August 11 » Hussein bin Talal is proclaimed King of Jordan.
August 12 » The Night of the Murdered Poets: Thirteen prominent Jewish intellectuals are murdered in Moscow, Russia, Soviet Union.
October 20 » The Governor of Kenya declares a state of emergency and begins arresting hundreds of suspected leaders of the Mau Mau Uprising.
December 24 » First flight of Britain's Handley Page Victor strategic bomber.
Day of death June 10, 1961
The temperature on June 10, 1961 was between 5.5 °C and 19.2 °C and averaged 13.6 °C. There was 10.0 hours of sunshine (60%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
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.
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
May 1 » The Prime Minister of Cuba, Fidel Castro, proclaims Cuba a socialist nation and abolishes elections.
May 5 » Alan Shepard becomes the first American to travel into outer space, on a sub-orbital flight.
August 25 » President Jânio Quadros of Brazil resigns after just seven months in power, initiating a political crisis that culminates in a military coup in 1964.
October 1 » East and West Cameroon merge to form the Federal Republic of Cameroon.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I34296.php : accessed February 5, 2026), "Cyriel van Landschoot (1912-1961)".
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