The temperature on March 25, 1910 was between 1.9 °C and 9.7 °C and averaged 6.2 °C. There was 3.0 hours of sunshine (24%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-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.
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
August 29 » The Japan–Korea Treaty of 1910, also known as the Japan–Korea Annexation Treaty, becomes effective, officially starting the period of Japanese rule in Korea.
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.
December 3 » Modern neon lighting is first demonstrated by Georges Claude at the Paris Motor Show.
Day of marriage July 6, 1939
The temperature on July 6, 1939 was between 10.6 °C and 21.1 °C and averaged 16.3 °C. There was 10.2 hours of sunshine (62%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
January 24 » The deadliest earthquake in Chilean history strikes Chillán, killing approximately 28,000 people.
April 30 » The 1939–40 New York World's Fair opens.
May 17 » The Columbia Lions and the Princeton Tigers play in the United States' first televised sporting event, a collegiate baseball game in New York City.
June 12 » The Baseball Hall of Fame opens in Cooperstown, New York.
October 16 » World War II: No. 603 Squadron RAF intercepts the first Luftwaffe raid on Britain.
November 8 » In Munich, Adolf Hitler narrowly escapes the assassination attempt of Georg Elser while celebrating the 16th anniversary of the Beer Hall Putsch.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I16955.php : accessed February 25, 2026), "Hendrik Mulder (1910-)".
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