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.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
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.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of marriage May 19, 1917
The temperature on May 19, 1917 was between 11.0 °C and 20.6 °C and averaged 15.4 °C. There was 0.3 mm of rain. There was 3.4 hours of sunshine (21%). The average windspeed was 2 Bft (weak wind) and was prevailing from the ??. 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 8 » International Women's Day protests in St. Petersburg mark the beginning of the February Revolution (February 23rd in the Julian calendar).
May 26 » Several powerful tornadoes rip through Illinois, including the city of Mattoon.
June 5 » World War I: Conscription begins in the United States as "Army registration day".
October 4 » World War I: The Battle of Broodseinde is fought between the British and German armies in Flanders.
November 2 » The Military Revolutionary Committee of the Petrograd Soviet, in charge of preparation and carrying out the Russian Revolution, holds its first meeting.
November 7 » The Gregorian calendar date of the October Revolution, which gets its name from the Julian calendar date of 25 October. On this date in 1917, the Bolsheviks storm the Winter Palace.
Day of death April 8, 1957
The temperature on April 8, 1957 was between 1.1 °C and 9.8 °C and averaged 5.9 °C. There was 12.0 hours of sunshine (90%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 3 » Walter O'Malley, the owner of the Brooklyn Dodgers, agrees to move the team from Brooklyn to Los Angeles.
June 24 » In Roth v. United States, the U.S. Supreme Court rules that obscenity is not protected by the First Amendment.
July 1 » The International Geophysical Year begins.
August 31 » The Federation of Malaya (now Malaysia) gains its independence from the United Kingdom.
October 4 » Sputnik 1 becomes the first artificial satellite to orbit the Earth.
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.
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/I21031.php : accessed October 14, 2026), "Hermanus Steensma (1897-1957)".
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