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".
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
September 18 » The Atlanta Exposition Speech on race relations is delivered by Booker T. Washington.
November 27 » At the Swedish–Norwegian Club in Paris, Alfred Nobel signs his last will and testament, setting aside his estate to establish the Nobel Prize after he dies.
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 September 19, 1936
The temperature on September 19, 1936 was between 10.1 °C and 19.8 °C and averaged 13.9 °C. There was 3.3 hours of sunshine (26%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
July 6 » A major breach of the Manchester Bolton & Bury Canal in England sends millions of gallons of water cascading 200 feet (61m) into the River Irwell.
July 20 » The Montreux Convention is signed in Switzerland, authorizing Turkey to fortify the Dardanelles and Bosphorus but guaranteeing free passage to ships of all nations in peacetime.
July 22 » Spanish Civil War: The Popular Executive Committee of Valencia takes power in the Valencian Community.
August 3 » Jesse Owens wins the 100 metre dash, defeating Ralph Metcalfe, at the Berlin Olympics.
September 6 » Spanish Civil War: The Interprovincial Council of Asturias and León is established.
December 13 » An annular solar eclipse occurred and was visible from Australia, New Zealand on December 14th (Monday), and Oeno Island in Pitcairn Islands on December 13th (Sunday).
Day of death May 20, 1977
The temperature on May 20, 1977 was between 8.6 °C and 13.5 °C and averaged 10.4 °C. There was 3.0 mm of rain during 1.5 hours. There was 0.3 hours of sunshine (2%). The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
April 11 » London Transport's Silver Jubilee AEC Routemaster buses are launched.
May 1 » Thirty-six people are killed in Taksim Square, Istanbul, during the Labour Day celebrations.
June 27 » France grants independence to Djibouti.
July 11 » Martin Luther King, Jr. is posthumously awarded the Presidential Medal of Freedom.
August 10 » In Yonkers, New York, 24-year-old postal employee David Berkowitz ("Son of Sam") is arrested for a series of killings in the New York City area over the period of one year.
October 13 » Hijacking of Lufthansa Flight 181 by the Popular Front for the Liberation of Palestine.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I18630.php : accessed January 30, 2026), "Petrus Johannes "Piet" (Petrus Johannes "Piet") le Roux (1895-1977)".
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