January 4 » Utah is admitted as the 45th U.S. state.
February 1 » La bohème premieres in Turin at the Teatro Regio (Turin), conducted by the young Arturo Toscanini.
March 1 » Battle of Adwa: An Ethiopian army defeats an outnumbered Italian force, ending the First Italo-Ethiopian War.
April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
June 4 » Henry Ford completes the Ford Quadricycle, his first gasoline-powered automobile, and gives it a successful test run.
December 14 » The Glasgow Underground Railway is opened by the Glasgow District Subway Company.
Day of death May 15, 1975
The temperature on May 15, 1975 was between 8.1 °C and 16.6 °C and averaged 12.3 °C. There was 1.9 hours of sunshine (12%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north. 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.
January 30 » The Monitor National Marine Sanctuary is established as the first United States National Marine Sanctuary.
February 28 » In London, an underground train fails to stop at Moorgate terminus station and crashes into the end of the tunnel, killing 43 people.
March 6 » Algiers Accord: Iran and Iraq announce a settlement of their border dispute.
April 29 » Vietnam War: The North Vietnamese army completes its capture of all parts of South Vietnamese-held Trường Sa Islands.
May 30 » European Space Agency is established.
September 28 » The Spaghetti House siege, in which nine people are taken hostage, takes place in London.
Day of burial May 20, 1975
The temperature on May 20, 1975 was between 5.3 °C and 20.0 °C and averaged 12.3 °C. There was -0.1 mm of rain. There was 11.8 hours of sunshine (74%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
April 25 » As North Vietnamese forces close in on the South Vietnamese capital Saigon, the Australian Embassy is closed and evacuated, almost ten years to the day since the first Australian troop commitment to South Vietnam.
April 29 » Vietnam War: The North Vietnamese army completes its capture of all parts of South Vietnamese-held Trường Sa Islands.
August 27 » The Governor of Portuguese Timor abandons its capital, Dili, and flees to Atauro Island, leaving control to a rebel group.
September 4 » The Sinai Interim Agreement relating to the Arab–Israeli conflict is signed.
November 12 » The Comoros joins the United Nations.
November 28 » East Timor declares its independence from Portugal.
When copying data from this family tree, please include a reference to the origin: Rob Vredeling, "Family tree Vredeling", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-vredeling/I2463.php : accessed February 21, 2026), "Catharina Philomena Maria "Cato" van Gaalen (1896-1975)".
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