The temperature on April 20, 1938 was between -0.6 °C and 11.1 °C and averaged 5.2 °C. There was 8.5 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
February 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
March 18 » Mexico creates Pemex by expropriating all foreign-owned oil reserves and facilities.
May 26 » In the United States, the House Un-American Activities Committee begins its first session.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
November 1 » Seabiscuit defeats War Admiral in an upset victory during a match race deemed "the match of the century" in horse racing.
When copying data from this family tree, please include a reference to the origin: Murphy Torn, "Family tree Torn", database, Genealogy Online (https://www.genealogieonline.nl/torn-stamboom/P4096.php : accessed February 18, 2026), "Nicolaas Jan Calkoen (1854-1938)".
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