The temperature on June 21, 1906 was between 9.4 °C and 23.3 °C and averaged 17.3 °C. There was 5.8 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
March 22 » The first England vs France rugby union match is played at Parc des Princes in Paris.
April 8 » Auguste Deter, the first person to be diagnosed with Alzheimer's disease, dies.
September 5 » The first legal forward pass in American football is thrown by Bradbury Robinson of St. Louis University to teammate Jack Schneider in a 22–0 victory over Carroll College (Wisconsin).
September 7 » Alberto Santos-Dumont flies his 14-bis aircraft at Bagatelle, France for the first time successfully.
October 11 » San Francisco sparks a diplomatic crisis between the United States and Japan by ordering segregated schools for Japanese students.
December 10 » U.S. President Theodore Roosevelt wins the Nobel Peace Prize for his role in the mediation of the Russo-Japanese War, becoming the first American to win a Nobel Prize.
Day of marriage June 11, 1931
The temperature on June 11, 1931 was between 13.0 °C and 19.6 °C and averaged 16.4 °C. There was 3.2 hours of sunshine (19%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 5 » The British Raj: Gandhi–Irwin Pact is signed.
March 23 » Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for the killing of a deputy superintendent of police during the Indian independence movement.
March 26 » Swissair is founded as the national airline of Switzerland.
May 1 » The Empire State Building is dedicated in New York City.
May 14 » Five unarmed civilians are killed in the Ådalen shootings, as the Swedish military is called in to deal with protesting workers.
December 11 » Statute of Westminster 1931: The British Parliament establishes legislative equality between the UK and the Dominions of the Commonwealth—Australia, Canada, Newfoundland, New Zealand, South Africa, and Ireland.
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I10366.php : accessed March 16, 2026), "Jan Plas (1906-)".
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