January 1 » New York, New York annexes land from surrounding counties, creating the City of Greater New York. The four initial boroughs, Manhattan, Brooklyn, Queens, and The Bronx, are joined on January 25 by Staten Island to create the modern city of five boroughs.
February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
March 16 » In Melbourne the representatives of five colonies adopted a constitution, which would become the basis of the Commonwealth of Australia.
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of marriage May 31, 1919
The temperature on May 31, 1919 was between 8.2 °C and 23.0 °C and averaged 15.4 °C. There was 12.9 hours of sunshine (79%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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 11 » Friedrich Ebert (SPD), is elected President of Germany.
February 26 » President Woodrow Wilson signs an act of Congress establishing the Grand Canyon National Park.
June 2 » Anarchists simultaneously set off bombs in eight separate U.S. cities.
July 11 » The eight-hour day and free Sunday become law for workers in the Netherlands.
August 8 » The Anglo-Afghan Treaty of 1919 is signed. It establishes peaceful relations between Afghanistan and the UK, and confirms the Durand line as the mutual border. In return, the UK is no longer obligated to subsidize the Afghan government.
September 10 » Austria and the Allies sign the Treaty of Saint-Germain-en-Laye recognizing the independence of Poland, Hungary, Czechoslovakia and Yugoslavia.
Day of death January 11, 1964
The temperature on January 11, 1964 was between -4.3 °C and -0.7 °C and averaged -3.0 °C. There was 0.2 mm of rain during 0.6 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
July 27 » Vietnam War: Five thousand more American military advisers are sent to South Vietnam bringing the total number of United States forces in Vietnam to 21,000.
August 4 » Civil rights movement: Civil rights workers Michael Schwerner, Andrew Goodman and James Chaney are found dead in Mississippi after disappearing on June 21.
October 12 » The Soviet Union launches the Voskhod 1 into Earth orbit as the first spacecraft with a multi-person crew, and the first flight without pressure suits.
December 22 » The first test flight of the SR-71 (Blackbird) takes place at Air Force Plant 42 in Palmdale, California, United States.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I75842.php : accessed October 19, 2026), "Roelof Boersma (1898-1964)".
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