The temperature on September 20, 1912 was between 3.7 °C and 14.8 °C and averaged 9.3 °C. There was 8.7 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
April 14 » The British passenger liner RMSTitanic hits an iceberg in the North Atlantic at 23:40 (sinks morning of April 15th).
October 3 » U.S. forces defeat Nicaraguan rebels at the Battle of Coyotepe Hill.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of death August 25, 1961
The temperature on August 25, 1961 was between 14.2 °C and 20.5 °C and averaged 17.0 °C. There was 1.2 mm of rain during 1.0 hours. There was 2.2 hours of sunshine (16%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
February 12 » The Soviet Union launches Venera 1 towards Venus.
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
May 19 » At Silchar Railway Station, Assam, 11 Bengalis die when police open fire on protesters demanding state recognition of Bengali language in the Bengali Language Movement.
August 13 » Cold War: East Germany closes the border between the eastern and western sectors of Berlin to thwart its inhabitants' attempts to escape to the West, and construction of the Berlin Wall is started.
October 30 » Due to "violations of Vladimir Lenin's precepts", it is decreed that Joseph Stalin's body be removed from its place of honour inside Lenin's tomb and buried near the Kremlin Wall with a plain granite marker.
November 29 » Project Mercury: Mercury-Atlas 5 Mission: Enos, a chimpanzee, is launched into space. The spacecraft orbits the Earth twice and splashes down off the coast of Puerto Rico.
When copying data from this family tree, please include a reference to the origin: Coos van Spijk, "Family tree of Spijk and her many ancestors", database, Genealogy Online (https://www.genealogieonline.nl/van-spijk-stamboom/I79352.php : accessed February 6, 2026), "Jan Zwaan (1912-1961)".
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