The temperature on July 3, 1911 was between 4.0 °C and 17.0 °C and averaged 10.8 °C. There was 3.0 mm of rain. There was 6.9 hours of sunshine (41%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 27 » Following the resignation and death of William P. Frye, a compromise is reached to rotate the office of President pro tempore of the United States Senate.
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 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
Day of marriage May 4, 1935
The temperature on May 4, 1935 was between 5.2 °C and 20.1 °C and averaged 13.9 °C. There was 12.3 hours of sunshine (82%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
May 14 » The Constitution of the Philippines is ratified by a popular vote.
June 10 » Chaco War ends: A truce is called between Bolivia and Paraguay who had been fighting since 1932.
September 15 » Nazi Germany adopts a new national flag bearing the swastika.
October 10 » In Greece, a coup d'état ends the Second Hellenic Republic.
October 19 » The League of Nations places economic sanctions on Italy for its invasion of Ethiopia.
December 9 » The Downtown Athletic Club Trophy, later renamed the Heisman Trophy, is awarded for the first time. The winner is halfback Jay Berwanger of the University of Chicago.
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/I18471.php : accessed March 4, 2026), "Markus Jonker (1911-)".
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