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
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
May 8 » Paramount Pictures is founded.
November 7 » The Deutsche Opernhaus (now Deutsche Oper Berlin) opens in the Berlin neighborhood of Charlottenburg, with a production of Beethoven's Fidelio.
November 12 » The frozen bodies of Robert Scott and his men are found on the Ross Ice Shelf in Antarctica.
December 3 » Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with the Ottoman Empire, temporarily halting the First Balkan War. (The armistice will expire on February 3, 1913, and hostilities will resume.)
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
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 21 » The British government, under Winston Churchill, abolishes identity cards in the UK to "set the people free".
April 9 » Hugo Ballivián's government is overthrown by the Bolivian National Revolution, starting a period of agrarian reform, universal suffrage and the nationalization of tin mines
May 7 » The concept of the integrated circuit, the basis for all modern computers, is first published by Geoffrey Dummer.
July 7 » The ocean liner SSUnited States passes Bishop Rock on her maiden voyage, breaking the transatlantic speed record to become the fastest passenger ship in the world.
September 12 » Strange occurrences, including a monster sighting, take place in Flatwoods, West Virginia.
November 25 » Korean War: After 42 days of fighting, the Battle of Triangle Hill ends with Chinese victory, American and South Korean units abandon their attempt to capture the "Iron Triangle".
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
March 1 » Uganda becomes self-governing and holds its first elections.
March 2 » John F. Kennedy announces the creation of the Peace Corps in a nationally televised broadcast.
May 1 » The Prime Minister of Cuba, Fidel Castro, proclaims Cuba a socialist nation and abolishes elections.
May 19 » Venera program: Venera 1 becomes the first man-made object to fly by another planet by passing Venus (the probe had lost contact with Earth a month earlier and did not send back any data).
September 18 » CONCACAF is established as the governing body for association football in North America, Central America and the Caribbean.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
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 6, 2026), "Cyriel van Landschoot (1912-1961)".
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