The temperature on February 18, 1915 was between 4.4 °C and 8.3 °C and averaged 6.2 °C. There was 0.1 mm of rain. There was 0.2 hours of sunshine (2%). 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.
January 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
May 24 » World War I: Italy declares war on Austria-Hungary, joining the conflict on the side of the Allies.
July 16 » Henry James becomes a British citizen to highlight his commitment to Britain during the first World War.
July 28 » The United States begins a 19-year occupation of Haiti.
September 5 » The pacifist Zimmerwald Conference begins.
Day of marriage October 27, 1938
The temperature on October 27, 1938 was between 2.0 °C and 8.2 °C and averaged 5.9 °C. There was 2.4 mm of rain during 5.1 hours. There was -0.1 hours of sunshine (0%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
September 21 » The Great Hurricane of 1938 makes landfall on Long Island in New York. The death toll is estimated at 500–700 people.
October 1 » Germany annexes the Sudetenland.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
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/I362017.php : accessed February 11, 2026), "Folkerdina Janssen (1915-2021)".
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