The temperature on September 16, 1912 was between 5.0 °C and 16.6 °C and averaged 11.4 °C. There was 0.2 mm of rain. There was 5.1 hours of sunshine (40%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
April 14 » The British passenger liner RMSTitanic hits an iceberg in the North Atlantic at 23:40 (sinks morning of April 15th).
October 3 » U.S. forces defeat Nicaraguan rebels at the Battle of Coyotepe Hill.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
December 8 » Leaders of the German Empire hold an Imperial War Council to discuss the possibility that war might break out.
Day of marriage November 6, 1947
The temperature on November 6, 1947 was between 7.6 °C and 12.1 °C and averaged 9.0 °C. There was 0.2 mm of rain during 0.3 hours. There was 1.2 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Joke Koster, "Family tree Griffioen Jellema Friese Adel", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-griffioen-koster/I126186.php : accessed May 5, 2024), "Hiltje Kerstes Hylkema (1912-1999)".
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