February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
June 14 » Hawaii becomes a United States territory.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 19 » The first line of the Paris Métro opens for operation.
Day of death March 15, 1975
The temperature on March 15, 1975 was between 2.4 °C and 6.1 °C and averaged 4.4 °C. There was 8.6 mm of rain during 14.5 hours. The almost completely overcast 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 2 » Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops.
April 21 » Vietnam War: President of South Vietnam Nguyễn Văn Thiệu flees Saigon, as Xuân Lộc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls.
July 12 » São Tomé and Príncipe declare independence from Portugal.
October 1 » Muhammad Ali defeats Joe Frazier in a boxing match in Manila, Philippines.
October 22 » The Soviet unmanned space mission Venera 9 lands on Venus.
November 25 » Suriname gains independence from the Netherlands.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P17975.php : accessed January 10, 2026), "Aristotle Socrates Onassis (1900-1975)".
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