The temperature on December 10, 1909 was between -1.1 °C and 3.6 °C and averaged 1.4 °C. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
March 10 » By signing the Anglo-Siamese Treaty of 1909, Thailand relinquishes its sovereignty over the Malay states of Kedah, Kelantan, Perlis and Terengganu, which become British protectorates.
April 11 » The city of Tel Aviv is founded.
July 25 » Louis Blériot makes the first flight across the English Channel in a heavier-than-air machine from Calais to Dover, England, United Kingdom in 37 minutes.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
December 4 » The Montreal Canadiens ice hockey club, the oldest surviving professional hockey franchise in the world, is founded as a charter member of the National Hockey Association.
Day of death March 13, 1978
The temperature on March 13, 1978 was between 3.8 °C and 10.0 °C and averaged 7.4 °C. There was 2.1 mm of rain during 1.9 hours. There was 5.0 hours of sunshine (43%). The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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.
March 15 » Somalia and Ethiopia signed a truce to end the Ethio-Somali War.
March 16 » Former Italian Prime Minister Aldo Moro is kidnapped. (He is later murdered by his captors.)
May 3 » The first unsolicited bulk commercial email (which would later become known as "spam") is sent by a Digital Equipment Corporation marketing representative to every ARPANET address on the west coast of the United States.
June 26 » Air Canada Flight 189, flying to Toronto, overruns the runway and crashes into the Etobicoke Creek ravine. Two of the 107 passengers on board perish.
August 17 » Double Eagle II becomes first balloon to cross the Atlantic Ocean when it lands in Miserey, France near Paris, 137 hours after leaving Presque Isle, Maine.
November 23 » Cyclone kills about 1000 people in eastern Sri Lanka.
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/I212011.php : accessed February 22, 2026), "Derkje Helder (1909-1978)".
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