April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
May 1 » The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
June 9 » Indian nationalist Birsa Munda dies of cholera in a British prison.
July 19 » The first line of the Paris Métro opens for operation.
August 16 » The Battle of Elands River during the Second Boer War ends after a 13-day siege is lifted by the British. The battle had begun when a force of between 2,000 and 3,000 Boers had surrounded a force of 500 Australians, Rhodesians, Canadians and British soldiers at a supply dump at Brakfontein Drift.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of death February 28, 1973
The temperature on February 28, 1973 was between -2.6 °C and 4.2 °C and averaged 2.0 °C. There was -0.1 mm of rain. There was -0.1 hours of sunshine (0%). The partly or 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 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.
January 22 » In a bout for the world heavyweight boxing championship in Kingston, Jamaica, challenger George Foreman knocks down champion Joe Frazier six times in the first two rounds before the fight is stopped by referee Arthur Mercante.
May 29 » Tom Bradley is elected the first black mayor of Los Angeles, California.
July 31 » A Delta Air Lines jetliner, flight DL 723 crashes while landing in fog at Logan International Airport, Boston, Massachusetts killing 89.
September 26 » Concorde makes its first non-stop crossing of the Atlantic in record-breaking time.
November 8 » The right ear of John Paul Getty III is delivered to a newspaper outlet along with a ransom note, convincing his father to pay US$2.9 million.
November 24 » A national speed limit is imposed on the Autobahn in Germany because of the 1973 oil crisis. The speed limit lasts only four months.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I240855.php : accessed January 6, 2026), "Johanna Maria Kokx (1900-1973)".
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