The temperature on April 1, 1911 was between 0.7 °C and 14.2 °C and averaged 6.6 °C. There was 5.6 hours of sunshine (43%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
January 26 » Glenn Curtiss flies the first successful American seaplane.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
Day of marriage December 23, 1939
The temperature on December 23, 1939 was between -6.4 °C and 1.5 °C and averaged -2.0 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
January 14 » Norway claims Queen Maud Land in Antarctica.
September 3 » World War II: The United Kingdom and France begin a naval blockade of Germany that lasts until the end of the war. This also marks the beginning of the Battle of the Atlantic.
September 6 » World War II: South Africa declares war on Nazi Germany.
September 19 » World War II: The Battle of Kępa Oksywska concludes, with Polish losses reaching roughly 14% of all the forces engaged.
October 1 » World War II: After a one-month siege, German troops occupy Warsaw.
December 14 » Winter War: The Soviet Union is expelled from the League of Nations for invading Finland.
Day of death June 5, 1990
The temperature on June 5, 1990 was between 9.1 °C and 19.5 °C and averaged 13.9 °C. There was 5.2 hours of sunshine (31%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 12 » Carmen Lawrence becomes the first female Premier in Australian history when she becomes Premier of Western Australia.
March 29 » The Czechoslovak parliament is unable to reach an agreement on what to call the country after the fall of Communism, sparking the so-called Hyphen War.
March 31 » Approximately 200,000 protesters take to the streets of London to protest against the newly introduced Poll Tax.
June 1 » Cold War: George H. W. Bush and Mikhail Gorbachev sign a treaty to end chemical weapon production.
June 10 » British Airways Flight 5390 lands safely at Southampton Airport after a blowout in the cockpit causes the captain to be partially sucked from the cockpit. There are no fatalities.
November 15 » Space Shuttle program: Space Shuttle Atlantis launches with flight STS-38.
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/I71803.php : accessed February 23, 2026), "Hillechina (Keijzer) "Hillechien" Keizer (1911-1990)".
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