February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
May 1 » The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
July 29 » In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 19 » Max Planck discovers Planck's law of black-body radiation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 3, 1923
The temperature on May 3, 1923 was between 5.4 °C and 15.3 °C and averaged 10.7 °C. There was 2.6 hours of sunshine (17%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. 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 16 » Howard Carter unseals the burial chamber of Pharaoh Tutankhamun.
April 26 » The Duke of York weds Lady Elizabeth Bowes-Lyon at Westminster Abbey.
August 16 » The United Kingdom gives the name "Ross Dependency" to part of its claimed Antarctic territory and makes the Governor-General of the Dominion of New Zealand its administrator.
September 29 » The First American Track & Field championships for women are held.
October 15 » The German Rentenmark is introduced in Germany to counter hyperinflation in the Weimar Republic.
October 29 » Turkey becomes a republic following the dissolution of the Ottoman Empire.
Day of death October 17, 1970
The temperature on October 17, 1970 was between 2.6 °C and 15.5 °C and averaged 7.7 °C. There was 8.1 hours of sunshine (76%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
March 21 » The first Earth Day proclamation is issued by Joseph Alioto, Mayor of San Francisco.
March 28 » An earthquake strikes western Turkey at about 23:05 local time, killing 1,086 and injuring 1,260.
April 1 » The first of over 670,000 AMC Gremlins are released into North America to compete with foreign imported cars.
August 17 » Venera program: Venera 7 launched. It will later become the first spacecraft to successfully transmit data from the surface of another planet (Venus).
October 26 » Muhammad Ali boxes for the first time after Ali's three-year hiatus due to draft evasion.
December 23 » The North Tower of the World Trade Center in Manhattan, New York, New York is topped out at 1,368 feet (417m), making it the tallest building in the world.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I10486.php : accessed March 13, 2026), "Jan Willem Stoffer (1900-1970)".
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