Family tree Klavers » Pieter Mandema (1880-1968)

Day of marriage May 4, 1911

• The temperature on May 4, 1911 was between 4.0 °C and 14.5 °C and averaged 9.9 °C. There was 9.5 mm of rain. There was 7.7 hours of sunshine (51%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
• Koningin Wilhelmina (Huis van Oranje-Nassau) was from 1890 till 1948 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
• In the year 1911: Source: Wikipedia
  • The Netherlands had about 6.0 million citizens.
  • January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
  • May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
  • July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
  • August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
  • September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
  • November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.

Day of death May 20, 1968

• The temperature on May 20, 1968 was between 1.7 °C and 12.0 °C and averaged 7.9 °C. There was 0.2 mm of rain during 0.1 hours. There was 2.0 hours of sunshine (13%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
• Koningin Juliana (Huis van Oranje-Nassau) was from September 4, 1948 till April 30, 1980 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet De Jong, with P.J.S. de Jong (KVP) as prime minister.
• In the year 1968: Source: Wikipedia
  • The Netherlands had about 12.7 million citizens.
  • April 6 » Pierre Elliott Trudeau wins the Liberal Leadership Election, and becomes Prime Minister of Canada soon after.
  • April 20 » English politician Enoch Powell makes his controversial "Rivers of Blood" speech.
  • July 23 » The only successful hijacking of an El Al aircraft takes place when a Boeing 707 carrying ten crew and 38 passengers is taken over by three members of the Popular Front for the Liberation of Palestine. The aircraft was en route from Rome, to Lod, Israel.
  • November 1 » The Motion Picture Association of America's film rating system is officially introduced, originating with the ratings G, M, R, and X.
  • November 17 » Viewers of the Raiders–Jets football game in the eastern United States are denied the opportunity to watch its exciting finish when NBC broadcasts Heidi instead, prompting changes to sports broadcasting in the U.S.
  • December 9 » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the computer mouse, hypertext, and the bit-mapped graphical user interface using the oN-Line System (NLS).

Source: Wikipedia

• 1961 » Josef Priller, German colonel and pilot (b. 1915)
• 1964 » Rudy Lewis, American singer (b. 1936)
• 1971 » Waldo Williams, Welsh poet and academic (b. 1904)
• 1973 » Jarno Saarinen, Finnish motorcycle racer (b. 1945)
• 1973 » Renzo Pasolini, Italian motorcycle racer (b. 1938)
• 1975 » Barbara Hepworth, English sculptor and lithographer (b. 1903)