January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
July 29 » In Italy, King Umberto I of Italy is assassinated by the anarchist Gaetano Bresci.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death May 22, 1975
The temperature on May 22, 1975 was between 3.6 °C and 11.5 °C and averaged 7.9 °C. There was -0.1 mm of rain. There was 5.7 hours of sunshine (36%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) 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.
February 13 » Fire at One World Trade Center (North Tower) of the World Trade Center in New York.
April 4 » Vietnam War: A United States Air Force Lockheed C-5A Galaxy transporting orphans, crashes near Saigon, South Vietnam shortly after takeoff, killing 172 people.
April 19 » India's first satellite Aryabhata launched in orbit from Kapustin Yar, Russia.
August 15 » Bangladeshi leader Sheikh Mujibur Rahman is killed along with most members of his family during a military coup.
September 16 » The first prototype of the Mikoyan MiG-31 interceptor makes its maiden flight.
November 11 » Australian constitutional crisis of 1975: Australian Governor-General Sir John Kerr dismisses the government of Gough Whitlam, appoints Malcolm Fraser as caretaker Prime Minister and announces a general election to be held in early December.
When copying data from this family tree, please include a reference to the origin: James Colgan, "Colgan Family tree", database, Genealogy Online (https://www.genealogieonline.nl/colgan-family-tree/P2982.php : accessed May 11, 2025), "Robert Moses "Lefty" Grove (1900-1975)".
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