February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
May 8 » The first games of the Italian football league system are played.
June 17 » The United States Navy Hospital Corps is established.
July 3 » A Spanish squadron, led by Pascual Cervera y Topete, is defeated by an American squadron under William T. Sampson in the Battle of Santiago de Cuba.
July 7 » US President William McKinley signs the Newlands Resolution annexing Hawaii as a territory of the United States.
December 26 » Marie and Pierre Curie announce the isolation of radium.
Day of death April 15, 1971
The temperature on April 15, 1971 was between 2.4 °C and 20.6 °C and averaged 11.5 °C. There was 11.3 hours of sunshine (82%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
February 5 » Astronauts land on the moon in the Apollo 14 mission.
March 12 » The 1971 Turkish military memorandum is sent to the Süleyman Demirel government of Turkey and the government resigns.
June 30 » The crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve.
August 27 » An attempted coup d'état fails in the African nation of Chad. The Government of Chad accuses Egypt of playing a role in the attempt and breaks off diplomatic relations.
November 21 » Indian troops, partly aided by Mukti Bahini (Bengali guerrillas), defeat the Pakistan army in the Battle of Garibpur.
December 7 » Pakistan President Yahya Khan announces the formation of a coalition government with Nurul Amin as Prime Minister and Zulfikar Ali Bhutto as Deputy Prime Minister.
When copying data from this family tree, please include a reference to the origin: Herman Steinmeier, "Family tree Steinmeier/De Vries", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-steinmeier/R4403.php : accessed January 9, 2026), "Herman Cornelis Tjebbe Cornelisz de Jong (1898-1971)".
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