The temperature on April 17, 1887 was about 7.8 °C. The air pressure was 6 kgf/m2 and came mainly from the north-northwest. The airpressure was 78 cm mercury. The atmospheric humidity was 54%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
April 4 » Argonia, Kansas elects Susanna M. Salter as the first female mayor in the United States.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.
Day of death July 20, 1960
The temperature on July 20, 1960 was between 12.6 °C and 19.1 °C and averaged 15.3 °C. There was 1.9 mm of rain during 1.3 hours. There was 0.3 hours of sunshine (2%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 17 » U.S. President Dwight D. Eisenhower signs the National Security Council directive on the anti-Cuban covert action program that will ultimately lead to the Bay of Pigs Invasion.
September 2 » The first election of the Parliament of the Central Tibetan Administration, in history of Tibet. The Tibetan community observes this date as Democracy Day.
September 5 » Muhammad Ali (then known as Cassius Clay) wins the gold medal in the light heavyweight boxing competition at the Olympic Games in Rome.
September 22 » The Sudanese Republic is renamed Mali after the withdrawal of Senegal from the Mali Federation.
November 9 » Robert McNamara is named president of Ford Motor Company, the first non-Ford to serve in that post. A month later, he resigned to join the administration of newly elected John F. Kennedy.
November 28 » Mauritania becomes independent of France.
When copying data from this family tree, please include a reference to the origin: Alex Scholte, "Scholte family tree", database, Genealogy Online (https://www.genealogieonline.nl/scholte-stamboom/I500023.php : accessed February 2, 2026), "Jan Springer (1887-1960)".
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