The temperature on February 1, 1911 was between -8.0 °C and 1.7 °C and averaged -2.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
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.
May 30 » At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun in his Marmon Wasp becoming the first winner of the 500-mile auto race.
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.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
Day of marriage May 12, 1938
The temperature on May 12, 1938 was between 0.4 °C and 20.8 °C and averaged 12.6 °C. There was 12.9 hours of sunshine (83%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
February 18 » Second Sino-Japanese War: During the Nanking Massacre, the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee", and the safety zone in place for refugees falls apart.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
June 25 » Dr. Douglas Hyde is inaugurated as the first President of Ireland.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
October 10 » Abiding by the Munich Agreement, Czechoslovakia completes its withdrawal from the Sudetenland.
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/I137760.php : accessed October 22, 2026), "Jan Wybenga (1911-)".
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