The temperature on May 12, 1917 was between 10.1 °C and 27.0 °C and averaged 19.2 °C. There was 7.8 hours of sunshine (50%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 3 » First World War: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare.
February 23 » First demonstrations in Saint Petersburg, Russia. The beginning of the February Revolution (March 8 in the Gregorian calendar).
November 25 » World War I: German forces defeat Portuguese army of about 1,200 at Negomano on the border of modern-day Mozambique and Tanzania.
November 26 » The Manchester Guardian publishes the 1916 secret Sykes-Picot Agreement between the United Kingdom and France.
December 6 » World War I: USSJacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SMU-53.
December 7 » World War I: The United States declares war on Austria-Hungary.
Day of death March 9, 1961
The temperature on March 9, 1961 was between 0.5 °C and 15.3 °C and averaged 7.0 °C. There was 0.2 mm of rain. There was 6.9 hours of sunshine (61%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
January 24 » Goldsboro B-52 crash: A bomber carrying two H-bombs breaks up in mid-air over North Carolina. The uranium core of one weapon remains lost.
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 9 » The Pacific Electric Railway in Los Angeles, once the largest electric railway in the world, ends operations.
May 4 » American civil rights movement: The "Freedom Riders" begin a bus trip through the South.
November 21 » The "La Ronde" opens in Honolulu, first revolving restaurant in the United States.
December 15 » Adolf Eichmann is sentenced to death after being found guilty by an Israeli court of 15 criminal charges, including charges of crimes against humanity, crimes against the Jewish people, and membership of an outlawed organization.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I564549.php : accessed January 21, 2026), "Klaas Groot (1917-1961)".
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