February 20 » The legislature of Hawaii Territory convenes for the first time.
March 2 » United States Steel Corporation is founded as a result of a merger between Carnegie Steel Company and Federal Steel Company which became the first corporation in the world with a market capital over $1 billion.
June 17 » The College Board introduces its first standardized test, the forerunner to the SAT.
August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
August 21 » Six hundred American school teachers, Thomasites, arrived in Manila on the USAT Thomas.
December 10 » The first Nobel Prize ceremony is held in Stockholm on the fifth anniversary of Alfred Nobel's death.
Day of death April 30, 1973
The temperature on April 30, 1973 was between -1.8 °C and 15.6 °C and averaged 9.2 °C. There was 5.2 mm of rain during 5.3 hours. There was 0.7 hours of sunshine (5%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
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.
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.
June 20 » Snipers fire upon left-wing Peronists in Buenos Aires, Argentina, in what is known as the Ezeiza massacre. At least 13 are killed and more than 300 are injured.
June 28 » Elections are held for the Northern Ireland Assembly, which will lead to power-sharing between unionists and nationalists in Northern Ireland for the first time.
July 5 » A boiling liquid expanding vapor explosion (BLEVE) in Kingman, Arizona, following a fire that broke out as propane was being transferred from a railroad car to a storage tank, kills eleven firefighters.
July 10 » The Bahamas gain full independence within the Commonwealth of Nations.
September 11 » JAT Airways Flight 769 crashes into the Maganik mountain range while on approach to Titograd Airport, killing 35 passengers and six crew.
November 17 » Watergate scandal: In Orlando, Florida, U.S. President Richard Nixon tells 400 Associated Press managing editors "I am not a crook."
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I132496.php : accessed October 25, 2026), "Jan Wiering (1901-1973)".
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