February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
April 21 » Spanish–American War: The United States Navy begins a blockade of Cuban ports. When the U.S. Congress issued a declaration of war on April 25, it declared that a state of war had existed from this date.
May 8 » The first games of the Italian football league system are played.
August 28 » Caleb Bradham's beverage "Brad's Drink" is renamed "Pepsi-Cola".
September 13 » Hannibal Goodwin patents celluloid photographic film.
December 18 » Gaston de Chasseloup-Laubat sets the first officially recognized land speed record of 39.245mph (63.159km/h) in a Jeantaud electric car.
Day of marriage May 20, 1954
The temperature on May 20, 1954 was between 6.7 °C and 12.6 °C and averaged 9.4 °C. There was 1.1 mm of rain during 0.7 hours. There was 3.0 hours of sunshine (19%). The heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the northwest. Source: KNMI
April 1 » United States President Dwight D. Eisenhower authorizes the creation of the United States Air Force Academy in Colorado.
September 14 » In a top secret nuclear test, a Soviet Tu-4 bomber drops a 40 kiloton atomic weapon just north of Totskoye village.
September 29 » The convention establishing CERN (the European Organization for Nuclear Research) is signed.
November 1 » The Front de Libération Nationale fires the first shots of the Algerian War of Independence.
November 10 » U.S. President Dwight D. Eisenhower dedicates the USMC War Memorial (Iwo Jima memorial) in Arlington Ridge Park in Arlington County, Virginia.
December 2 » The Sino-American Mutual Defense Treaty, between the United States and Taiwan, is signed in Washington, D.C.
When copying data from this family tree, please include a reference to the origin: Wim Ackermans, "Family tree Ackermans", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ackermans/I3867.php : accessed February 26, 2026), "Helena Cornelia Catharina Ruigrok (1898-????)".
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