The temperature on July 7, 1937 was between 13.7 °C and 21.6 °C and averaged 16.7 °C. There was 4.1 mm of rain during 1.3 hours. There was 2.0 hours of sunshine (12%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 18 » The New London School explosion in New London, Texas, kills 300 people, mostly children.
April 1 » Aden becomes a British crown colony.
May 21 » A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean.
June 30 » The world's first emergency telephone number, 999, is introduced in London.
November 1 » Stalinists execute Pastor Paul Hamberg and seven members of Azerbaijan's Lutheran community.
December 29 » The Irish Free State is replaced by a new state called Ireland with the adoption of a new constitution.
Day of death September 9, 1944
The temperature on September 9, 1944 was between 5.8 °C and 14.8 °C and averaged 9.9 °C. There was 8.0 mm of rain during 3.5 hours. There was 4.6 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 4 » World War II: Operation Carpetbagger, involving the dropping of arms and supplies to resistance fighters in Europe, begins.
January 31 » World War II: During the Anzio campaign, the 1st Ranger Battalion (Darby's Rangers) is destroyed behind enemy lines in a heavily outnumbered encounter at Battle of Cisterna, Italy.
April 1 » Navigation errors lead to an accidental American bombing of the Swiss city of Schaffhausen.
August 16 » First flight of a jet with forward-swept wings, the Junkers Ju 287.
August 29 » World War II: Slovak National Uprising takes place as 60,000 Slovak troops turn against the Nazis.
October 7 » World War II: During an uprising at Birkenau concentration camp, Jewish prisoners burn down Crematorium IV.
When copying data from this family tree, please include a reference to the origin: Wim Ackermans, "Family tree Ackermans", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ackermans/I5361.php : accessed February 18, 2026), "Petronella Leonarda Olijslagers (1913-1944)".
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