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.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
Day of marriage May 31, 1923
The temperature on May 31, 1923 was between 8.5 °C and 12.1 °C and averaged 10.1 °C. There was 0.8 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 10 » Texas Tech University is founded as Texas Technological College in Lubbock, Texas
February 16 » Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.
April 18 » Yankee Stadium: "The House that Ruth Built" opens.
July 1 » The Parliament of Canada suspends all Chinese immigration.
September 26 » The German government accepts the occupation of the Ruhr.
December 21 » United Kingdom and Nepal formally signed an agreement of friendship, called the Nepal–Britain Treaty of 1923, which superseded the Treaty of Sugauli signed in 1816.
Day of death August 24, 1963
The temperature on August 24, 1963 was between 12.3 °C and 17.0 °C and averaged 14.2 °C. There was 8.6 mm of rain during 4.8 hours. There was 0.2 hours of sunshine (1%). The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 2 » Vietnam War: The Viet Cong wins its first major victory, at the Battle of Ap Bac.
April 11 » Pope John XXIII issues Pacem in terris, the first encyclical addressed to all Christians instead of only Catholics, and which described the conditions for world peace in human terms.
June 21 » Cardinal Giovanni Battista Montini is elected as Pope Paul VI.
August 31 » Crown Colony of North Borneo (now Sabah) achieves self governance.
September 7 » The Pro Football Hall of Fame opens in Canton, Ohio with 17 charter members.
December 7 » Instant replay makes its debut during the Army-Navy football game in Philadelphia, Pennsylvania, United States.
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/I187928.php : accessed October 19, 2026), "Eelkje Heemstra (1897-1963)".
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