The temperature on July 30, 1911 was between 19.6 °C and 30.0 °C and averaged 24.1 °C. There was 11.8 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
Day of marriage November 12, 1931
The temperature on November 12, 1931 was between 6.3 °C and 12.0 °C and averaged 8.7 °C. There was 1.5 hours of sunshine (17%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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 14 » Alam Ara, India's first talking film, is released.
March 15 » SSViking explodes off Newfoundland, killing 27 of the 147 on board.
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 » Ho Chi Minh Communist Youth Union is founded in Vietnam.
July 16 » Emperor Haile Selassie signs the first constitution of Ethiopia.
September 18 » The Mukden Incident gives Japan a pretext to invade and occupy Manchuria.
When copying data from this family tree, please include a reference to the origin: Michael Jacobs, "Family tree Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-michael-jacobs/I64902.php : accessed May 7, 2025), "Johanna Henriette de Wolf (1911-)".
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