The temperature on May 21, 1911 was between 6.5 °C and 17.7 °C and averaged 11.8 °C. There was 11.1 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
Day of marriage June 1, 1935
The temperature on June 1, 1935 was between 5.4 °C and 16.2 °C and averaged 11.5 °C. There was 4.9 hours of sunshine (30%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 13 » A plebiscite in Saarland shows that 90.3% of those voting wish to join Nazi Germany.
May 24 » The first night game in Major League Baseball history is played in Cincinnati, Ohio, with the Cincinnati Reds beating the Philadelphia Phillies 2–1 at Crosley Field.
June 12 » A ceasefire is negotiated between Bolivia and Paraguay, ending the Chaco War.
June 18 » Police in Vancouver, British Columbia, Canada, clash with striking longshoremen, resulting in a total of 60 injuries and 24 arrests.
September 15 » Nazi Germany adopts a new national flag bearing the swastika.
September 24 » Earl and Weldon Bascom produce the first rodeo ever held outdoors under electric lights.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I120917.php : accessed October 20, 2026), "Doetje Datema (1911-)".
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