The temperature on April 6, 1915 was between 3.7 °C and 11.3 °C and averaged 7.2 °C. There was 2.0 mm of rain. There was 5.1 hours of sunshine (38%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
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 22 » Lassen Peak erupts with a powerful force, the only volcano besides Mount St. Helens to erupt in the contiguous U.S. during the 20th century.
May 23 » World War I: Italy joins the Allies, fulfilling its part of the Treaty of London.
June 5 » Denmark amends its constitution to allow women's suffrage.
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.
Day of marriage May 4, 1935
The temperature on May 4, 1935 was between 5.2 °C and 20.1 °C and averaged 13.9 °C. There was 12.3 hours of sunshine (82%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
February 26 » Robert Watson-Watt carries out a demonstration near Daventry which leads directly to the development of radar in the United Kingdom.
August 31 » In an attempt to stay out of the growing tensions concerning Germany and Japan, the United States passes the first of its Neutrality Acts.
September 2 » The Labor Day Hurricane, the most intense hurricane to strike the United States, makes landfall at Long Key, Florida, killing at least 400.
September 17 » The Niagara Gorge Railroad ceases operations after a rockslide.
October 10 » In Greece, a coup d'état ends the Second Hellenic Republic.
December 12 » Lebensborn Project, a Nazi reproduction program, is founded by Heinrich Himmler.
Day of death November 18, 1999
The temperature on November 18, 1999 was between -0.2 °C and 6.0 °C and averaged 2.1 °C. There was 9.8 mm of rain during 6.7 hours. There was 2.6 hours of sunshine (30%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
January 1 » Euro currency is introduced in 11 member nations of the European Union (with the exception of the United Kingdom, Denmark, Greece and Sweden; Greece later adopts the euro).
March 29 » The Dow Jones Industrial Average closes above the 10,000 mark (10,006.78) for the first time, during the height of the dot-com bubble.
October 12 » Pervez Musharraf takes power in Pakistan from Nawaz Sharif through a bloodless coup.
October 26 » Britain's House of Lords votes to end the right of hereditary peers to vote in Britain's upper chamber of Parliament.
November 26 » The 7.5 Mw Ambrym earthquake shakes Vanuatu and a destructive tsunami follows. Ten people were killed and forty were injured.
December 31 » The U.S. government hands control of the Panama Canal (as well all the adjacent land to the canal known as the Panama Canal Zone) to Panama. This act complied with the signing of the 1977 Torrijos–Carter Treaties.
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/I124232.php : accessed February 3, 2026), "Bonne Simmering (1915-1999)".
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