February 21 » An Englishman raised in Australia, Bob Fitzsimmons, fought an Irishman, Peter Maher, in an American promoted event which technically took place in Mexico, winning the 1896 World Heavyweight Championship in boxing.
March 1 » Henri Becquerel discovers radioactive decay.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 18 » Khodynka Tragedy: A mass panic on Khodynka Field in Moscow during the festivities of the coronation of Russian Tsar Nicholas II results in the deaths of 1,389 people.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
Day of death April 23, 1956
The temperature on April 23, 1956 was between 0.3 °C and 10.1 °C and averaged 5.6 °C. There was 7.6 hours of sunshine (53%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 4 » The Greek National Radical Union is formed by Konstantinos Karamanlis.
February 20 » The United States Merchant Marine Academy becomes a permanent Service Academy.
March 23 » Pakistan becomes the first Islamic republic in the world. This date is now celebrated as Republic Day in Pakistan.
April 3 » Hudsonville–Standale tornado: The western half of the Lower Peninsula of Michigan is struck by a deadly F5 tornado.
April 26 » SSIdeal X, the world's first successful container ship, leaves Port Newark, New Jersey, for Houston, Texas.
October 26 » Hungarian Revolution: In the towns of Mosonmagyaróvár and Esztergom, Hungarian secret police forces massacre civilians. As rebel strongholds in Budapest hold, fighting spreads throughout the country.
When copying data from this family tree, please include a reference to the origin: Rob Slotemaker, "Family tree Slotemaker", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-slotemaker/I289.php : accessed February 1, 2026), "Johannes Pieter de Visser (????-1956)".
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