The temperature on June 20, 1927 was between 11.2 °C and 16.6 °C and averaged 13.7 °C. There was 5.6 hours of sunshine (33%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. 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.
March 29 » Sunbeam 1000hp breaks the land speed record at Daytona Beach, Florida.
May 8 » Attempting to make the first non-stop transatlantic flight from Paris to New York, French war heroes Charles Nungesser and François Coli disappear after taking off aboard The White Bird biplane.
May 18 » After being founded for 20 years, the Government of the Republic of China approves Tongji University to be among the first national universities of the Republic of China.
May 18 » The Bath School disaster: Forty-five people, including many children, are killed by bombs planted by a disgruntled school-board member in Michigan.
August 23 » Italian anarchists Sacco and Vanzetti are executed after a lengthy, controversial trial.
When copying data from this family tree, please include a reference to the origin: Christiaan, "Stambomen Droste, Casand en Boogaart", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-droste/I268.php : accessed January 27, 2026), "Paulina Constatia Elisabeth Grolman (1844-1927)".
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