The temperature on March 17, 1912 was between 3.3 °C and 7.8 °C and averaged 5.6 °C. There was 0.5 mm of rain. There was 0.1 hours of sunshine (1%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
April 17 » Russian troops open fire on striking goldfield workers in northeast Siberia, killing at least 150.
June 8 » Carl Laemmle incorporates Universal Pictures.
September 28 » The Ulster Covenant is signed by some 500,000 Ulster Protestant Unionists in opposition to the Third Irish Home Rule Bill.
October 11 » First Balkan War: The day after the Battle of Sarantaporo, Greek troops liberate the city of Kozani.
November 28 » Albania declares its independence from the Ottoman Empire.
Day of marriage April 21, 1937
The temperature on April 21, 1937 was between 3.7 °C and 9.1 °C and averaged 6.7 °C. There was 7.8 mm of rain during 5.4 hours. There was 2.1 hours of sunshine (15%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
April 12 » Sir Frank Whittle ground-tests the first jet engine designed to power an aircraft, at Rugby, England.
September 25 » Second Sino-Japanese War: The Chinese Eighth Route Army gains a minor, but morale-boosting victory in the Battle of Pingxingguan.
October 2 » Rafael Trujillo orders the execution of Haitians living in the northwestern region of the Dominican Republic.
October 11 » The Duke and Duchess of Windsor tour Nazi Germany for 12 days and meet Adolf Hitler on the 22nd.
December 16 » Theodore Cole and Ralph Roe attempt to escape from the American federal prison on Alcatraz Island in San Francisco Bay; neither is ever seen again.
December 22 » The Lincoln Tunnel opens to traffic in New York City.
When copying data from this family tree, please include a reference to the origin: A. Hakkert , "Family tree Hakkert", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-hakkert/I6846.php : accessed March 1, 2026), "Willemina Hackert (1912-)".
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