The temperature on May 11, 1941 was between 0.3 °C and 12.9 °C and averaged 6.9 °C. There was 14.5 hours of sunshine (94%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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.
March 4 » World War II: The United Kingdom launches Operation Claymore on the Lofoten Islands; the first large scale British Commando raid.
March 17 » In Washington, D.C., the National Gallery of Art is officially opened by President Franklin D. Roosevelt.
April 1 » A military coup in Iraq overthrows the regime of 'Abd al-Ilah and installs Rashid Ali al-Gaylani as Prime Minister.
June 5 » World War II: Four thousand Chongqing residents are asphyxiated in a bomb shelter during the Bombing of Chongqing.
July 4 » World War II: The Burning of the Riga synagogues: The Great Choral Synagogue in German occupied Riga is burnt with 300 Jews locked in the basement.
November 1 » American photographer Ansel Adams takes a picture of a moonrise over the town of Hernandez, New Mexico that would become one of the most famous images in the history of photography.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I25980.php : accessed February 22, 2026), "Petrus Frans van Landeghem (-1941)".
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