The temperature on January 21, 1910 was between -2.3 °C and 4.5 °C and averaged 1.3 °C. There was 1.2 mm of rain. There was 2.9 hours of sunshine (34%). The average windspeed was 4 Bft (moderate breeze) 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.
June 2 » Charles Rolls, a co-founder of Rolls-Royce Limited, becomes the first man to make a non-stop double crossing of the English Channel by plane.
June 17 » Aurel Vlaicu pilots an A. Vlaicu nr. 1 on its first flight.
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 11 » Piloted by Arch Hoxsey, Theodore Roosevelt becomes the first U.S. president to fly in an airplane.
October 14 » English aviator Claude Grahame-White lands his aircraft on Executive Avenue near the White House in Washington, D.C.
Day of marriage October 9, 1936
The temperature on October 9, 1936 was between 0.2 °C and 12.2 °C and averaged 5.6 °C. There was 6.7 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I56263.php : accessed January 21, 2026), "Hendrik Cornelis Helsdingen (1910-)".
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