The temperature on July 4, 1911 was between 3.0 °C and 20.0 °C and averaged 13.3 °C. There was 14.5 hours of sunshine (87%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
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 May 13, 1937
The temperature on May 13, 1937 was between 8.0 °C and 15.7 °C and averaged 10.9 °C. There was 0.8 mm of rain during 0.8 hours. There was 1.5 hours of sunshine (10%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
July 6 » Spanish Civil War: Battle of Brunete: The battle begins with Spanish Republican troops going on the offensive against the Nationalists to relieve pressure on Madrid.
July 8 » Turkey, Iran, Iraq and Afghanistan sign the Treaty of Saadabad.
July 24 » Alabama drops rape charges against the "Scottsboro Boys".
September 5 » Spanish Civil War: Llanes falls to the Nationalists following a one-day siege.
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: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I119026.php : accessed October 18, 2026), "Hendrik Folkertsma (1911-)".
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