The temperature on May 1, 1915 was between 4.5 °C and 19.4 °C and averaged 13.2 °C. There was 7.3 hours of sunshine (49%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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 24 » World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.
February 8 » D. W. Griffith's controversial film The Birth of a Nation premieres in Los Angeles.
February 19 » World War I: The first naval attack on the Dardanelles begins when a strong Anglo-French task force bombards Ottoman artillery along the coast of Gallipoli.
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.
June 29 » The North Saskatchewan River flood of 1915 is the worst flood in Edmonton history.
September 5 » The pacifist Zimmerwald Conference begins.
Day of death April 11, 1931
The temperature on April 11, 1931 was between 4.9 °C and 13.3 °C and averaged 8.6 °C. There was 4.9 hours of sunshine (36%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 23 » Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for the killing of a deputy superintendent of police during the Indian independence movement.
May 1 » The Empire State Building is dedicated in New York City.
May 14 » Five unarmed civilians are killed in the Ådalen shootings, as the Swedish military is called in to deal with protesting workers.
May 29 » Michele Schirru, a citizen of the United States, is executed by Italian military firing squad for intent to kill Benito Mussolini.
August 24 » France and the Soviet Union sign a neutrality pact.
December 5 » Cathedral of Christ the Saviour in Moscow was destroyed on orders from Joseph Stalin.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I509.php : accessed February 19, 2026), "Hendrika Kommer (1915-1931)".
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