The temperature on November 2, 1927 was between 10.0 °C and 15.3 °C and averaged 12.6 °C. There was 5.1 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. 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 30 » Douglas Fairbanks and Mary Pickford become the first celebrities to leave their footprints in concrete at Grauman's Chinese Theatre in Hollywood.
May 22 » Near Xining, China, an 8.3 magnitude earthquake causes 200,000 deaths in one of the world's most destructive earthquakes.
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.
November 21 » Columbine Mine massacre: Striking coal miners are allegedly attacked with machine guns by a detachment of state police dressed in civilian clothes.
December 19 » Three Indian revolutionaries, Ram Prasad Bismil, Roshan Singh and Ashfaqulla Khan, are executed by the British Raj for participation in the Kakori conspiracy.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I14884.php : accessed February 20, 2026), "Dirkje van Vliet (1906-)".
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