The temperature on May 5, 1927 was between 10.6 °C and 25.0 °C and averaged 17.4 °C. There was 1.5 mm of rain. There was 8.4 hours of sunshine (56%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
April 12 » Shanghai massacre of 1927: Chiang Kai-shek orders the Chinese Communist Party members executed in Shanghai, ending the First United Front.
July 4 » First flight of the Lockheed Vega.
July 16 » Augusto César Sandino leads a raid on U.S. Marines and Nicaraguan Guardia Nacional that had been sent to apprehend him in the village of Ocotal, but is repulsed by one of the first dive-bombing attacks in history.
October 4 » Gutzon Borglum begins sculpting Mount Rushmore.
November 13 » The Holland Tunnel opens to traffic as the first Hudson River vehicle tunnel linking New Jersey to New York City.
When copying data from this family tree, please include a reference to the origin: John van Eck, "Family tree van Eck", database, Genealogy Online (https://www.genealogieonline.nl/van-eck-stamboom/I53747341.php : accessed February 27, 2026), "Willemijntje ten Beste (± 1903-)".
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