January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
February 11 » Meiji Constitution of Japan is adopted.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
September 23 » Nintendo Koppai (Later Nintendo Company, Limited) is founded by Fusajiro Yamauchi to produce and market the playing card game Hanafuda.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
November 11 » The State of Washington is admitted as the 42nd state of the United States.
Day of marriage June 20, 1919
The temperature on June 20, 1919 was between 13.1 °C and 20.1 °C and averaged 16.2 °C. There was 1.1 mm of rain. There was 1.4 hours of sunshine (8%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 15 » Rosa Luxemburg and Karl Liebknecht, two of the most prominent socialists in Germany, are tortured and murdered by the Freikorps at the end of the Spartacist uprising.
January 18 » World War I: The Paris Peace Conference opens in Versailles, France.
February 26 » President Woodrow Wilson signs an act of Congress establishing the Grand Canyon National Park.
May 8 » Edward George Honey proposes the idea of a moment of silence to commemorate the Armistice of 11 November 1918 which ended World War I.
May 19 » Mustafa Kemal Atatürk lands at Samsun on the Anatolian Black Sea coast, initiating what is later termed the Turkish War of Independence.
June 2 » Anarchists simultaneously set off bombs in eight separate U.S. cities.
Day of death December 14, 1971
The temperature on December 14, 1971 was between 2.3 °C and 7.8 °C and averaged 5.6 °C. There was -0.1 mm of rain. There was 5.5 hours of sunshine (71%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 11 » Cold War: the Seabed Arms Control Treaty opened for signature outlawing nuclear weapons on the ocean floor in international waters.
February 27 » Doctors in the first Dutch abortion clinic (the Mildredhuis in Arnhem) start performing artificially-induced abortions.
June 7 » The Alcohol, Tobacco, and Firearms Division of the U.S. Internal Revenue Service raids the home of Ken Ballew for illegal possession of hand grenades.
June 7 » The United States Supreme Court overturns the conviction of Paul Cohen for disturbing the peace, setting the precedent that vulgar writing is protected under the First Amendment to the United States Constitution.
July 26 » Apollo program: Launch of Apollo 15 on the first Apollo "J-Mission", and first use of a Lunar Roving Vehicle.
November 23 » Representatives of the People's Republic of China attend the United Nations, including the United Nations Security Council, for the first time.
When copying data from this family tree, please include a reference to the origin: Gemma Ekermans, "Family tree Ekermans", database, Genealogy Online (https://www.genealogieonline.nl/ekermans-stamboom/I131.php : accessed March 13, 2026), "Jan Martin (Jan Martin) Honings (1889-1971)".
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