August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
December 30 » The British Colony of Natal annexes Zululand.
Day of death June 28, 1923
The temperature on June 28, 1923 was between 6.4 °C and 16.5 °C and averaged 11.6 °C. There was 10.2 hours of sunshine (61%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. 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.
January 1 » Britain's Railways are grouped into the Big Four: LNER, GWR, SR, and LMS.
August 23 » Captain Lowell Smith and Lieutenant John P. Richter performed the first mid-air refueling on De Havilland DH-4B, setting an endurance flight record of 37 hours.
September 4 » Maiden flight of the first U.S. airship, the USSShenandoah.
October 13 » Ankara becomes the capital of Turkey.
November 9 » In Munich, Germany, police and government troops crush the Beer Hall Putsch in Bavaria. The failed coup is the work of the Nazis.
November 11 » Adolf Hitler was arrested in Munich for high treason for his role in the Beer Hall Putsch.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I45493.php : accessed March 6, 2026), "Gerardus Pieter de Koning (1897-1923)".
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