April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
June 28 » The U.S. Congress passes the Spooner Act, authorizing President Theodore Roosevelt to acquire rights from Colombia for the Panama Canal.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death April 1, 1972
The temperature on April 1, 1972 was between 8.2 °C and 10.0 °C and averaged 8.9 °C. There was 8.2 mm of rain during 10.4 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
January 20 » Pakistan launched its nuclear weapons program, a few weeks after its defeat in the Bangladesh Liberation War, as well as the Indo-Pakistani War of 1971.
March 1 » The Thai province of Yasothon is created after being split off from the Ubon Ratchathani Province.
March 20 » The Troubles: The first Provisional IRA car bombing in Belfast kills seven people and injures 148 others in Northern Ireland.
September 21 » Philippine President Ferdinand Marcos begins authoritarian rule by declaring martial law.
November 21 » Voters in South Korea overwhelmingly approve a new constitution, giving legitimacy to Park Chung-hee and the Fourth Republic.
November 23 » The Soviet Union makes its final attempt at successfully launching the N1 rocket.
When copying data from this family tree, please include a reference to the origin: Wesley Brown, "The Brown Tree", database, Genealogy Online (https://www.genealogieonline.nl/the-brown-tree/P1818.php : accessed February 1, 2026), "Violet Joesephine HEFFERNAN (1902-)".
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