April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
May 18 » The United States Supreme Court rules in Plessy v. Ferguson that the "separate but equal" doctrine is constitutional.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
November 27 » Also sprach Zarathustra by Richard Strauss is first performed.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of death June 23, 1911
The temperature on June 23, 1911 was between 12.2 °C and 19.3 °C and averaged 15.2 °C. There was 6.4 mm of rain. There was 1.2 hours of sunshine (7%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
May 30 » At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun in his Marmon Wasp becoming the first winner of the 500-mile auto race.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
When copying data from this family tree, please include a reference to the origin: Nico de Kunder, "Family tree De Kunder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kunder/I3593.php : accessed October 17, 2026), "Joannes Mathijs Ottenheim (1896-1911)".
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