The temperature on May 18, 1911 was between 10.6 °C and 17.1 °C and averaged 13.2 °C. There was 6.0 hours of sunshine (38%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
January 21 » The first Monte Carlo Rally takes place.
January 26 » Glenn Curtiss flies the first successful American seaplane.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
Day of death December 28, 1953
The temperature on December 28, 1953 was between 3.6 °C and 7.8 °C and averaged 4.9 °C. There was 7.4 mm of rain during 4.8 hours. There was 2.7 hours of sunshine (35%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
February 28 » James Watson and Francis Crick announce to friends that they have determined the chemical structure of DNA; the formal announcement takes place on April 25 following publication in April's Nature (pub. April 2).
April 24 » Winston Churchill is knighted by Queen Elizabeth II.
June 17 » Cold War: East Germany Workers Uprising: In East Germany, the Soviet Union orders a division of troops into East Berlin to quell a rebellion.
June 19 » Cold War: Julius and Ethel Rosenberg are executed at Sing Sing, in New York.
July 26 » Cold War: Fidel Castro leads an unsuccessful attack on the Moncada Barracks, thus beginning the Cuban Revolution. The movement took the name of the date: 26th of July Movement
October 30 » President Eisenhower approves the top-secret document NSC 162/2 concerning the maintenance of a strong nuclear deterrent force against the Soviet Union.
When copying data from this family tree, please include a reference to the origin: Zegert en Jan Vis, "Family tree Zegert Vis", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-zegert-vis/I39137.php : accessed June 24, 2024), "Hendrik Griffioen (1911-1953)".
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