The temperature on September 9, 1911 was between 10.0 °C and 19.9 °C and averaged 15.7 °C. There was 0.2 mm of rain. There was 6.3 hours of sunshine (48%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
June 22 » George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
November 3 » Chevrolet officially enters the automobile market in competition with the Ford Model T.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
Day of marriage December 18, 1934
The temperature on December 18, 1934 was between 2.8 °C and 7.9 °C and averaged 5.4 °C. There was 12.5 mm of rain during 4.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
March 26 » The United Kingdom driving test is introduced.
May 23 » Infamous American bank robbers Bonnie and Clyde are ambushed by police and killed in Bienville Parish, Louisiana.
May 28 » Near Callander, Ontario, Canada, the Dionne quintuplets are born to Oliva and Elzire Dionne; they will be the first quintuplets to survive infancy.
July 20 » West Coast waterfront strike: In Seattle, police fire tear gas on and club 2,000 striking longshoremen. The governor of Oregon calls out the National Guard to break a strike on the Portland docks.
September 8 » Off the New Jersey coast, a fire aboard the passenger liner SSMorro Castle kills 137 people.
November 23 » An Anglo-Ethiopian boundary commission in the Ogaden discovers an Italian garrison at Walwal, well within Ethiopian territory. This leads to the Abyssinia Crisis.
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/I190447.php : accessed October 11, 2026), "Itje Tolsma (1911-)".
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