The temperature on June 10, 1911 was between 4.8 °C and 16.6 °C and averaged 11.0 °C. There was 8.0 hours of sunshine (48%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 5 » The Kowloon–Canton Railway commences service.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
Day of marriage September 13, 1940
The temperature on September 13, 1940 was between 9.4 °C and 15.9 °C and averaged 13.4 °C. There was 21.6 mm of rain during 8.9 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
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.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 29 » In a ceremony held in Berkeley, California, physicist Ernest Lawrence receives the 1939 Nobel Prize in Physics from Sweden's Consul General in San Francisco.
May 10 » World War II: Winston Churchill is appointed Prime Minister of the United Kingdom following the resignation of Neville Chamberlain. On the same day, Germany invades France, Belgium and Luxembourg. Meanwhile, the United Kingdom occupies Iceland.
May 24 » Acting on the orders of Soviet leader Joseph Stalin, NKVD agent Iosif Grigulevich orchestrates an unsuccessful assassination attempt on exiled Russian revolutionary Leon Trotsky in Coyoacán, Mexico.
July 20 » California opens its first freeway, the Arroyo Seco Parkway.
August 5 » World War II: The Soviet Union formally annexes Latvia.
September 19 » World War II: Witold Pilecki is voluntarily captured and sent to Auschwitz to smuggle out information and start a resistance movement.
When copying data from this family tree, please include a reference to the origin: J. van Venrooij, "Van Venrooij", database, Genealogy Online (https://www.genealogieonline.nl/van-venrooij/I397.php : accessed January 24, 2026), "Johannes Helenus Exalto (1911-)".
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