April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage March 13, 1917
The temperature on March 13, 1917 was between 1.6 °C and 5.8 °C and averaged 3.6 °C. There was 0.7 hours of sunshine (6%). 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.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
October 31 » World War I: Battle of Beersheba: The "last successful cavalry charge in history".
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
Day of death November 4, 1963
The temperature on November 4, 1963 was between 2.2 °C and 11.4 °C and averaged 7.8 °C. There was 0.1 mm of rain. There was 0.2 hours of sunshine (2%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 23 » The Guinea-Bissau War of Independence officially begins when PAIGC guerrilla fighters attack the Portuguese army stationed in Tite.
April 12 » The Soviet nuclear-powered submarine K-33 collides with the Finnish merchant vessel M/S Finnclipper in the Danish straits.
April 21 » The first election of the Universal House of Justice is held, marking its establishment as the supreme governing institution of the Bahá'í Faith.
July 24 » The ship Bluenose II was launched in Lunenburg, Nova Scotia. The schooner is a major Canadian symbol.
July 26 » An earthquake in Skopje, Yugoslavia (present-day North Macedonia) leaves 1,100 dead.
July 26 » The Organisation for Economic Co-operation and Development votes to admit Japan.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I12241.php : accessed October 17, 2026), "Harmina Knoop (1897-1963)".
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