The temperature on February 13, 1918 was between 6.3 °C and 8.7 °C and averaged 7.2 °C. There was 3.3 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
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 Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 9 » Battle of Bear Valley: The last battle of the American Indian Wars.
January 17 » Finnish Civil War: The first serious battles take place between the Red Guards and the White Guard.
January 24 » The Gregorian calendar is introduced in Russia by decree of the Council of People's Commissars effective February 14 (New Style).
April 21 » World War I: German fighter ace Manfred von Richthofen, better known as "The Red Baron", is shot down and killed over Vaux-sur-Somme in France.
June 1 » World War I: Western Front: Battle of Belleau Wood: Allied Forces under John J. Pershing and James Harbord engage Imperial German Forces under Wilhelm, German Crown Prince.
November 11 » Emperor Charles I of Austria relinquishes power.
Day of marriage August 6, 1942
The temperature on August 6, 1942 was between 9.2 °C and 19.0 °C and averaged 14.5 °C. There was 9.0 hours of sunshine (59%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 25 » World War II: Thailand declares war on the United States and United Kingdom.
June 12 » Anne Frank receives a diary for her thirteenth birthday.
July 19 » World War II: The Second Happy Time of Hitler's submarines comes to an end, as the increasingly effective American convoy system compels them to return to the central Atlantic.
August 11 » Actress Hedy Lamarr and composer George Antheil receive a patent for a Frequency-hopping spread spectrum communication system that later became the basis for modern technologies in wireless telephones and Wi-Fi.
November 21 » The completion of the Alaska Highway (also known as the Alcan Highway) is celebrated (however, the highway is not usable by standard road vehicles until 1943).
December 22 » World War II: Adolf Hitler signs the order to develop the V-2 rocket as a weapon.
Day of death November 30, 1970
The temperature on November 30, 1970 was between 7.2 °C and 10.8 °C and averaged 8.9 °C. There was 6.6 mm of rain during 2.8 hours. The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
May 15 » President Richard Nixon appoints Anna Mae Hays and Elizabeth P. Hoisington the first female United States Army generals.
September 7 » Bill Shoemaker beats Johnny Longden's record to become the winningest jockey in horse racing history at Del Mar racetrack
October 12 » Vietnam War: Vietnamization continues as President Nixon announces that the United States will withdraw 40,000 more troops before Christmas.
October 26 » Muhammad Ali boxes for the first time after Ali's three-year hiatus due to draft evasion.
November 17 » Luna programme: The Soviet Union lands Lunokhod 1 on Mare Imbrium (Sea of Rains) on the Moon. This is the first roving remote-controlled robot to land on another world and is released by the orbiting Luna 17 spacecraft.
December 2 » The United States Environmental Protection Agency begins operations.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I61579.php : accessed February 11, 2026), "Martje Groeneveld (1918-1970)".
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