The temperature on June 19, 1910 was between 7.9 °C and 20.7 °C and averaged 14.8 °C. There was 11.4 hours of sunshine (68%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
January 13 » The first public radio broadcast takes place; a live performance of the operas Cavalleria rusticana and Pagliacci are sent out over the airwaves from the Metropolitan Opera House in New York.
February 8 » The Boy Scouts of America is incorporated by William D. Boyce.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
August 20 » Extremely dry and windy weather in the Inland Northwest of the United States causes several small wildfires to coalesce into the Great Fire of 1910, burning approximately 3million acres (12,000km) and killing 87 people.
October 20 » The hull of the RMSOlympic, sister-ship to the ill-fated RMS Titanic, is launched from the Harland and Wolff shipyard in Belfast.
Day of marriage December 30, 1937
The temperature on December 30, 1937 was between -3.6 °C and 0.4 °C and averaged -1.3 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
March 2 » The Steel Workers Organizing Committee signs a collective bargaining agreement with U.S. Steel, leading to unionization of the United States steel industry.
April 9 » The Kamikaze arrives at Croydon Airport in London. It is the first Japanese-built aircraft to fly to Europe.
April 26 » Spanish Civil War: Guernica, Spain, is bombed by German Luftwaffe.
June 3 » The Duke of Windsor marries Wallis Simpson.
July 6 » Spanish Civil War: Battle of Brunete: The battle begins with Spanish Republican troops going on the offensive against the Nationalists to relieve pressure on Madrid.
December 12 » Second Sino-Japanese War: USS Panay incident: Japanese aircraft bomb and sink U.S. gunboat USSPanay on the Yangtze river in China.
When copying data from this family tree, please include a reference to the origin: Matthijs Vonder, "Descendants Vonder", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-vonder/I345.php : accessed March 8, 2026), "Hendrika Sophia Jeanette van Herpen (1910-± 1991)".
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