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.
June 11 » The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)
June 12 » Philippine Declaration of Independence: General Emilio Aguinaldo declares the Philippines' independence from Spain.
August 13 » Carl Gustav Witt discovers 433 Eros, the first near-Earth asteroid to be found.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of death March 23, 1953
The temperature on March 23, 1953 was between 0.9 °C and 9.5 °C and averaged 3.3 °C. There was 5.2 hours of sunshine (42%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
April 24 » Winston Churchill is knighted by Queen Elizabeth II.
April 25 » Francis Crick and James Watson publish "Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid" describing the double helix structure of DNA.
June 8 » The United States Supreme Court rules in District of Columbia v. John R. Thompson Co. that restaurants in Washington, D.C., cannot refuse to serve black patrons.
November 23 » Pilot Felix Moncla and Lieutenant Robert Wilson disappear while in pursuit of a mysterious craft over Lake Superior.
December 8 » U.S. President Dwight D. Eisenhower delivers his "Atoms for Peace" speech, which leads to an American program to supply equipment and information on nuclear power to schools, hospitals, and research institutions around the world.
December 9 » Red Scare: General Electric announces that all communist employees will be discharged from the company.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I2020.php : accessed October 25, 2026), "Hindrik Smedinga (1898-1953)".
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