The temperature on August 25, 1911 was between 12.1 °C and 20.6 °C and averaged 16.3 °C. There was 2.3 mm of rain. There was 0.4 hours of sunshine (3%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 31 » The President of Mexico Porfirio Díaz flees the country during the Mexican Revolution.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
Day of marriage June 3, 1932
The temperature on June 3, 1932 was between 6.1 °C and 18.0 °C and averaged 13.6 °C. There was 9.9 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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.
January 25 » Second Sino-Japanese War: The Chinese National Revolutionary Army begins the defense of Harbin.
July 1 » Australia's national broadcaster, the Australian Broadcasting Corporation, was formed.
July 8 » The Dow Jones Industrial Average reaches its lowest level of the Great Depression, closing at 41.22.
August 2 » The positron (antiparticle of the electron) is discovered by Carl D. Anderson.
September 5 » The French Upper Volta is broken apart between Ivory Coast, French Sudan, and Niger.
September 10 » The New York City Subway's third competing subway system, the municipally-owned IND, is opened.
Day of death May 19, 1977
The temperature on May 19, 1977 was between 8.3 °C and 19.5 °C and averaged 14.1 °C. There was 12.3 hours of sunshine (78%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
May 1 » Thirty-six people are killed in Taksim Square, Istanbul, during the Labour Day celebrations.
June 10 » James Earl Ray escapes from Brushy Mountain State Prison in Petros, Tennessee. He is recaptured three days later.
June 13 » Convicted Martin Luther King Jr. assassin James Earl Ray is recaptured after escaping from prison three days before.
July 20 » The Johnstown flood of 1977 kills 84 people and causes millions of dollars in damages.
November 25 » Former Senator Benigno Aquino, Jr., is found guilty by the Philippine Military Commission No. 2 and is sentenced to death by firing squad. He is later assassinated in 1983.
December 6 » South Africa grants independence to Bophuthatswana, although it is not recognized by any other country.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I293274.php : accessed February 17, 2026), "Jan Boers (1911-1977)".
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