April 20 » U.S. President William McKinley signed a joint resolution to Congress for declaration of war against Spain, beginning the Spanish–American War.
July 7 » US President William McKinley signs the Newlands Resolution annexing Hawaii as a territory of the United States.
August 11 » Spanish–American War: American troops enter the city of Mayagüez, Puerto Rico.
August 28 » Caleb Bradham's beverage "Brad's Drink" is renamed "Pepsi-Cola".
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of marriage August 29, 1928
The temperature on August 29, 1928 was between 10.6 °C and 22.2 °C and averaged 16.1 °C. There was 0.5 mm of rain. There was 6.0 hours of sunshine (43%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
May 3 » The Jinan incident begins with the deaths of twelve Japanese civilians by Chinese forces in Jinan, China, which leads to Japanese retaliation and the deaths of over 2,000 Chinese civilians in the following days.
September 18 » Juan de la Cierva makes the first autogyro crossing of the English Channel.
September 27 » The Republic of China is recognized by the United States.
October 1 » The Soviet Union introduces its first five-year plan.
November 12 » SSVestris sinks approximately 200 miles (320km) off Hampton Roads, Virginia, killing at least 110 passengers, mostly women and children who die after the vessel is abandoned.
November 18 » Release of the animated short Steamboat Willie, the first fully synchronized sound cartoon, directed by Walt Disney and Ub Iwerks, featuring the third appearances of cartoon characters Mickey Mouse and Minnie Mouse. This is considered by the Disney corporation to be Mickey's birthday.
Day of death May 22, 1955
The temperature on May 22, 1955 was between 0.4 °C and 10.6 °C and averaged 5.6 °C. There was 0.4 mm of rain during 1.3 hours. There was 5.9 hours of sunshine (37%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
April 24 » The Bandung Conference ends: Twenty-nine non-aligned nations of Asia and Africa finish a meeting that condemns colonialism, racism, and the Cold War.
May 9 » Cold War: West Germany joins NATO.
May 18 » Operation Passage to Freedom, the evacuation of 310,000 Vietnamese civilians, soldiers and non-Vietnamese members of the French Army from communist North Vietnam to South Vietnam following the end of the First Indochina War, ends.
June 7 » Lux Radio Theatre signs off the air permanently. The show launched in New York in 1934, and featured radio adaptations of Broadway shows and popular films.
October 26 » Ngô Đình Diệm declares himself Premier of South Vietnam.
December 5 » E. D. Nixon and Rosa Parks lead the Montgomery Bus Boycott.
Day of burial May 25, 1955
The temperature on May 25, 1955 was between 5.3 °C and 13.6 °C and averaged 9.2 °C. There was 13.2 hours of sunshine (82%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
March 2 » Norodom Sihanouk, king of Cambodia, abdicates the throne in favor of his father, Norodom Suramarit.
May 2 » Tennessee Williams wins the Pulitzer Prize for Drama for Cat on a Hot Tin Roof.
June 7 » Lux Radio Theatre signs off the air permanently. The show launched in New York in 1934, and featured radio adaptations of Broadway shows and popular films.
October 26 » After the last Allied troops have left the country, and following the provisions of the Austrian Independence Treaty, Austria declares that it will never join a military alliance.
November 19 » National Review publishes its first issue.
December 5 » The American Federation of Labor and the Congress of Industrial Organizations merge and form the AFL–CIO.
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/I2930.php : accessed February 6, 2026), "Leonardus Killestein (1898-1955)".
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