The temperature on February 7, 1911 was between -2.9 °C and 4.7 °C and averaged 1.7 °C. There was 0.3 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 30 » The destroyer USSTerry makes the first airplane rescue at sea saving the life of Douglas McCurdy ten miles from Havana, Cuba.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
May 23 » The New York Public Library is dedicated.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
Day of marriage September 14, 1933
The temperature on September 14, 1933 was between 7.8 °C and 16.7 °C and averaged 11.8 °C. There was 11.7 mm of rain during 5.3 hours. There was 6.3 hours of sunshine (49%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from May 26, 1933 to July 31, 1935 the cabinet Colijn II, with Dr. H. Colijn (ARP) as prime minister.
January 24 » The 20th Amendment to the United States Constitution is ratified, changing the beginning and end of terms for all elected federal offices.
March 20 » Reichsführer-SS Heinrich Himmler ordered the creation of Dachau concentration camp as Chief of Police of Munich and appointed Theodor Eicke as the camp commandant.
March 31 » The Civilian Conservation Corps is established with the mission of relieving rampant unemployment in the United States.
May 2 » Germany's independent labor unions are replaced by the German Labour Front.
May 12 » The Agricultural Adjustment Act, which restricts agricultural production through government purchase of livestock for slaughter and paying subsidies to farmers when they remove land from planting, is signed into law by President Franklin D. Roosevelt.
July 22 » Aviator Wiley Post returns to Floyd Bennett Field in New York City, completing the first solo flight around the world in seven days, 18 hours and 49 minutes.
Day of death December 23, 1969
The temperature on December 23, 1969 was between -0.3 °C and 5.4 °C and averaged 1.5 °C. There was 3.6 mm of rain during 7.3 hours. There was 0.5 hours of sunshine (6%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
January 16 » Czech student Jan Palach commits suicide by self-immolation in Prague, Czechoslovakia, in protest against the Soviets' crushing of the Prague Spring the year before.
March 2 » In Toulouse, France, the first test flight of the Anglo-French Concorde is conducted.
April 1 » The Hawker Siddeley Harrier, the first operational fighter aircraft with Vertical/Short Takeoff and Landing capabilities, enters service with the Royal Air Force.
April 7 » The Internet's symbolic birth date: Publication of RFC 1.
June 3 » Melbourne–Evans collision: off the coast of South Vietnam, the Australian aircraft carrier HMASMelbourne cuts the U.S. Navy destroyer USSFrank E. Evans in half.
October 9 » In Chicago, the National Guard is called in as demonstrations continue over the trial of the "Chicago Eight".
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I112.php : accessed January 7, 2026), "Jan Vroegop (1911-1969)".
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