The temperature on April 1, 1910 was between -1.9 °C and 10.3 °C and averaged 4.5 °C. There was 11.4 hours of sunshine (88%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
March 1 » The deadliest avalanche in United States history buries a Great Northern Railway train in northeastern King County, Washington, killing 96 people.
April 28 » Frenchman Louis Paulhan wins the 1910 London to Manchester air race, the first long-distance aeroplane race in England.
June 19 » The first Father's Day is celebrated in Spokane, Washington.
September 12 » Premiere performance of Gustav Mahler's Symphony No. 8 in Munich (with a chorus of 852 singers and an orchestra of 171 players. Mahler's rehearsal assistant conductor was Bruno Walter).
October 14 » English aviator Claude Grahame-White lands his aircraft on Executive Avenue near the White House in Washington, D.C.
November 21 » Sailors on board Brazil's warships including the Minas Gerais, São Paulo, and Bahia, violently rebel in what is now known as the Revolta da Chibata (Revolt of the Lash).
Day of marriage June 2, 1938
The temperature on June 2, 1938 was between 7.8 °C and 18.0 °C and averaged 12.7 °C. There was 0.1 mm of rain. There was 7.7 hours of sunshine (47%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
January 3 » The March of Dimes is established as a foundation to combat infant polio by President Franklin D. Roosevelt.
March 12 » Anschluss: German troops occupy and absorb Austria.
June 11 » Second Sino-Japanese War: The Battle of Wuhan starts.
September 21 » The Great Hurricane of 1938 makes landfall on Long Island in New York. The death toll is estimated at 500–700 people.
September 23 » The Czechoslovak army is mobilized in response to the Munich Agreement.
November 9 » The Nazi German diplomat Ernst vom Rath dies from gunshot wounds by Herschel Grynszpan, an act which the Nazis used as an excuse to instigate the 1938 national pogrom, also known as Kristallnacht.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I118412.php : accessed January 1, 2026), "Klaas Helder (1910-)".
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