April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
May 8 » In Martinique, Mount Pelée erupts, destroying the town of Saint-Pierre and killing over 30,000 people. Only a handful of residents survive the blast.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
November 29 » The Pittsburgh Stars defeated the Philadelphia Athletics, 11–0 to win the first championship associated with an American national professional football league.
December 14 » The Commercial Pacific Cable Company lays the first Pacific telegraph cable, from San Francisco to Honolulu.
Day of death April 7, 1973
The temperature on April 7, 1973 was between 0.6 °C and 9.9 °C and averaged 5.0 °C. There was 2.1 mm of rain during 1.0 hours. There was 5.7 hours of sunshine (43%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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 » The Supreme Court of the United States delivers its decisions in Roe v. Wade and Doe v. Bolton, legalizing elective abortion in all fifty states.
July 17 » King Mohammed Zahir Shah of Afghanistan, while having surgery in Italy, is deposed by his cousin Mohammed Daoud Khan.
July 25 » Soviet Mars 5 space probe is launched.
August 2 » A flash fire kills 51 people at the Summerland amusement centre at Douglas, Isle of Man.
October 6 » Egypt and Syria launch coordinated attacks against Israel, beginning the Yom Kippur War.
October 21 » Fred Dryer of the Los Angeles Rams becomes the first player in NFL history to score two safeties in the same game.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I124810.php : accessed February 21, 2026), "Helena Maria Adriana Schalks (1902-1973)".
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