The temperature on February 29, 1928 was between 0.6 °C and 7.2 °C and averaged 3.7 °C. There was 2.0 hours of sunshine (18%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
May 15 » Walt Disney character Mickey Mouse premieres in his first cartoon, "Plane Crazy".
September 28 » Alexander Fleming notices a bacteria-killing mold growing in his laboratory, discovering what later became known as penicillin.
October 2 » The "Prelature of the Holy Cross and the Work of God", commonly known as Opus Dei, is founded.
October 10 » Chiang Kai-shek becomes Chairman of the Republic of China.
October 12 » An iron lung respirator is used for the first time at Children's Hospital, Boston.
December 6 » The government of Colombia sends military forces to suppress a month-long strike by United Fruit Company workers, resulting in an unknown number of deaths.
Day of death May 1, 1961
The temperature on May 1, 1961 was between 2.9 °C and 15.8 °C and averaged 9.9 °C. There was 0.4 mm of rain during 0.1 hours. There was 2.0 hours of sunshine (13%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
April 11 » The trial of Adolf Eichmann begins in Jerusalem.
May 5 » Alan Shepard becomes the first American to travel into outer space, on a sub-orbital flight.
October 30 » Due to "violations of Vladimir Lenin's precepts", it is decreed that Joseph Stalin's body be removed from its place of honour inside Lenin's tomb and buried near the Kremlin Wall with a plain granite marker.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
November 11 » Thirteen Italian Air Force servicemen, deployed to the Congo as a part of the UN peacekeeping force, are massacred by a mob in Kindu.
December 19 » India annexes Daman and Diu, part of Portuguese India.
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/I12043.php : accessed January 22, 2026), "Helena Barendina de Wit (1903-1961)".
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