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.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
December 17 » Pittsburgh, Pennsylvania's Schenley Park Casino, which was the first multi-purpose arena with the technology to create an artificial ice surface in North America, is destroyed in a fire.
Day of death January 31, 1980
The temperature on January 31, 1980 was between 2.9 °C and 10.7 °C and averaged 7.0 °C. There was 23.9 mm of rain during 8.5 hours. There was 2.7 hours of sunshine (30%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
May 27 » The Gwangju Massacre: Airborne and army troops of South Korea retake the city of Gwangju from civil militias, killing at least 207 and possibly many more.
June 27 » The 'Ustica massacre': Itavia Flight 870 crashes in the sea while en route from Bologna to Palermo, Italy, killing all 81 on board.
July 1 » "O Canada" officially becomes the national anthem of Canada.
July 7 » Institution of sharia law in Iran.
November 28 » Iran–Iraq War: Operation Morvarid: The bulk of the Iraqi Navy is destroyed by the Iranian Navy in the Persian Gulf. (Commemorated in Iran as Navy Day.)
December 2 » Salvadoran Civil War: Four American missionaries are raped and murdered by a death squad.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I12519.php : accessed February 24, 2026), "Petrus Jacobus DuPreez Lourens (1896-1980)".
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