The temperature on April 5, 1915 was between 5.3 °C and 10.9 °C and averaged 7.3 °C. There was 8.5 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
April 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
May 6 » Babe Ruth, then a pitcher for the Boston Red Sox, hits his first major league home run.
June 21 » The U.S. Supreme Court hands down its decision in Guinn v. United States 238 US 347 1915, striking down Oklahoma grandfather clause legislation which had the effect of denying the right to vote to blacks.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
Day of marriage May 23, 1936
The temperature on May 23, 1936 was between 2.1 °C and 16.7 °C and averaged 10.3 °C. There was 8.0 hours of sunshine (50%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
April 5 » Tupelo–Gainesville tornado outbreak: An F5 tornado kills 233 in Tupelo, Mississippi.
July 18 » On the Spanish mainland, a faction of the army supported by fascists, rises up against the Second Spanish Republic in a coup d'état starting the 3-year-long Civil War, resulting in the longest dictatorship in modern European history.
July 22 » Spanish Civil War: The Popular Executive Committee of Valencia takes power in the Valencian Community.
August 1 » The Olympics opened in Berlin with a ceremony presided over by Adolf Hitler.
October 5 » The Jarrow March sets off for London.
October 26 » The first electric generator at Hoover Dam goes into full operation.
Day of death September 30, 1957
The temperature on September 30, 1957 was between 3.1 °C and 13.4 °C and averaged 8.9 °C. There was 6.3 mm of rain during 2.4 hours. There was 3.9 hours of sunshine (33%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
January 14 » Kripalu Maharaj was named fifth Jagadguru (world teacher) after giving seven days of speeches before 500 Hindu scholars.
May 15 » At Malden Island in the Pacific Ocean, Britain tests its first hydrogen bomb in Operation Grapple.
August 21 » The Soviet Union successfully conducts a long-range test flight of the R-7 Semyorka, the first intercontinental ballistic missile.
September 2 » President Ngô Đình Diệm of South Vietnam becomes the first foreign head of state to make a state visit to Australia.
November 14 » The "Apalachin Meeting" in rural Tioga County in upstate New York is raided by law enforcement; many high level Mafia figures are arrested while trying to flee.
December 2 » United Nations Security Council Resolution 126 relating to Kashmir conflict is adopted.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I51147.php : accessed January 18, 2026), "Grietje Seinen (1915-1957)".
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