Family tree Klavers » Hinrich Wachtmeester (1915-< 2014)

Birthday May 31, 1915

• The temperature on May 31, 1915 was between 2.1 °C and 15.3 °C and averaged 9.1 °C. There was 7.2 hours of sunshine (44%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 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.
• In the year 1915: Source: Wikipedia
  • The Netherlands had about 6.3 million citizens.
  • May 1 » The RMSLusitania departs from New York City on her 202nd, and final, crossing of the North Atlantic. Six days later, the ship is torpedoed off the coast of Ireland with the loss of 1,198 lives.
  • July 25 » RFC Captain Lanoe Hawker becomes the first British pursuit aviator to earn the Victoria Cross.
  • August 4 » World War I: The German 12th Army occupies Warsaw during the Gorlice–Tarnów Offensive and the Great Retreat of 1915.
  • August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
  • October 14 » World War I: Bulgaria joins the Central Powers.
  • November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.

Source: Wikipedia

• 1911 » Maurice Allais, French economist and physicist, Nobel Prize laureate († 2010)
• 1912 » Chien-Shiung Wu, Chinese-American experimental physicist († 1997)
• 1914 » Akira Ifukube, Japanese composer and educator († 2006)
• 1916 » Bert Haanstra, Dutch director, producer, and screenwriter († 1997)
• 1918 » Lloyd Quarterman, African American chemist († 1982)
• 1918 » Robert Osterloh, American actor († 2001)