The temperature on April 11, 1917 was between -5.5 °C and 7.1 °C and averaged 2.1 °C. There was 4.1 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 5 Bft (very strong wind) 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.
February 5 » The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
June 13 » World War I: The deadliest German air raid on London of the war is carried out by Gotha G.IV bombers and results in 162 deaths, including 46 children, and 432 injuries.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
December 6 » World War I: USSJacob Jones is the first American destroyer to be sunk by enemy action when it is torpedoed by German submarine SMU-53.
December 15 » World War I: An armistice between Russia and the Central Powers is signed.
December 18 » The resolution containing the language of the Eighteenth Amendment to enact Prohibition is passed by the United States Congress.
Day of death April 27, 1978
The temperature on April 27, 1978 was between 5.2 °C and 13.4 °C and averaged 8.5 °C. There was 2.2 mm of rain during 0.6 hours. There was 0.3 hours of sunshine (2%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
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.
January 31 » The Crown of St. Stephen (also known as the Holy Crown of Hungary) goes on public display after being returned to Hungary from the United States, where it was held after World War II.
February 6 » The Blizzard of 1978, one of the worst Nor'easters in New England history, hit the region, with sustained winds of 65mph and snowfall of four inches an hour.
April 27 » The Saur Revolution begins in Afghanistan, ending the following morning with the murder of Afghan President Mohammed Daoud Khan and the establishment of the Democratic Republic of Afghanistan.
May 8 » The first ascent of Mount Everest without supplemental oxygen, by Reinhold Messner and Peter Habeler.
August 26 » Papal conclave: Albino Luciani is elected as Pope John Paul I.
October 8 » Australia's Ken Warby sets the current world water speed record of 317.60mph at Blowering Dam, Australia.
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/I81095.php : accessed February 19, 2026), "Roelof de Veen (1917-1978)".
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