The temperature on January 10, 1938 was between 1.7 °C and 4.6 °C and averaged 2.9 °C. There was 4.4 mm of rain during 2.8 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 4 » Adolf Hitler appoints himself as head of the Armed Forces High Command.
March 18 » Mexico creates Pemex by expropriating all foreign-owned oil reserves and facilities.
June 7 » Second Sino-Japanese War: The Chinese Nationalist government creates the 1938 Yellow River flood to halt Japanese forces. Five hundred to nine hundred thousand civilians are killed.
October 1 » Germany annexes the Sudetenland.
December 16 » Adolf Hitler institutes the Cross of Honour of the German Mother.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
When copying data from this family tree, please include a reference to the origin: Patrick Crooijmans, "Mannen van Croy", database, Genealogy Online (https://www.genealogieonline.nl/mannen-van-croy/I5429.php : accessed January 19, 2026), "Cornelis Petrus Josephus Oprins (1938-2023)".
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