March 22 » Before the Société pour L'Encouragement à l'Industrie, brothers Auguste and Louis Lumière demonstrate movie film technology publicly for the first time.
April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
April 24 » Joshua Slocum, the first person to sail single-handedly around the world, sets sail from Boston, Massachusetts aboard the sloop "Spray".
June 28 » The United States Court of Private Land Claims rules James Reavis’s claim to Barony of Arizona is "wholly fictitious and fraudulent."
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of marriage April 22, 1920
The temperature on April 22, 1920 was between -0.2 °C and 14.7 °C and averaged 8.1 °C. There was 0.1 mm of rain. There was 10.4 hours of sunshine (73%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-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.
February 2 » The Tartu Peace Treaty is signed between Estonia and Russia.
March 19 » The United States Senate rejects the Treaty of Versailles for the second time (the first time was on November 19, 1919).
August 31 » Polish–Soviet War: A decisive Polish victory in the Battle of Komarów.
October 14 » Finland and Soviet Russia sign the Treaty of Tartu, exchanging some territories.
November 1 » American fishing schooner Esperanto defeats the Canadian fishing schooner Delawana in the First International Fishing Schooner Championship Races in Halifax, Nova Scotia.
Day of death April 6, 1970
The average temperature on April 6, 1970 was 2.4 °C. There was 20.1 mm of rain during 19.4 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 31 » Explorer 1 re-enters the Earth's atmosphere after 12 years in orbit.
May 4 » Vietnam War: Kent State shootings: The Ohio National Guard, sent to Kent State University after disturbances in the city of Kent the weekend before, opens fire killing four unarmed students and wounding nine others. The students were protesting the Cambodian Campaign of the United States and South Vietnam.
May 14 » Andreas Baader is freed from custody by Ulrike Meinhof, Gudrun Ensslin and others, a pivotal moment in the formation of the Red Army Faction.
September 12 » Dawson's Field hijackings: Palestinian terrorists blow up three hijacked airliners in Jordan, continuing to hold the passengers hostage in various undisclosed locations in Amman.
December 2 » The United States Environmental Protection Agency begins operations.
December 21 » First flight of F-14 multi-role combat aircraft.
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The Family tree Van Dijk publication was prepared by wijlen Jan van Dijk (contact is not possible).
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