February 11 » Anton Bruckner's 9th Symphony receives its first performance in Vienna, Austria.
June 11 » A group of Serbian officers stormed the royal palace and assassinated King Alexander Obrenović and his wife, Queen Draga.
August 2 » The Ilinden–Preobrazhenie Uprising against the Ottoman Empire begins.
August 29 » The Slava, the last of the five Borodino-class battleships, is launched.
October 1 » Baseball: The Boston Americans play the Pittsburgh Pirates in the first game of the modern World Series.
December 14 » The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina.
Day of death May 23, 1975
The temperature on May 23, 1975 was between 3.5 °C and 10.4 °C and averaged 7.4 °C. There was -0.1 mm of rain. There was 2.5 hours of sunshine (16%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
March 26 » The Biological Weapons Convention comes into force.
May 10 » Sony introduces the Betamax videocassette recorder.
June 26 » Two FBI agents and a member of the American Indian Movement are killed in a shootout on the Pine Ridge Indian Reservation in South Dakota; Leonard Peltier is later convicted of the murders in a controversial trial.
July 27 » Mayor of Jaffna and former MP Alfred Duraiappah is shot dead.
November 10 » Israeli-Palestinian conflict: the United Nations General Assembly passes Resolution 3379, determining that Zionism is a form of racism.
November 12 » The Comoros joins the United Nations.
When copying data from this family tree, please include a reference to the origin: W.J. Oving, "Family tree Oving", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oving/I11187.php : accessed February 12, 2026), "Willem SLOETJES (1903-1975)".
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