The temperature on July 9, 1971 was between 14.3 °C and 29.5 °C and averaged 22.7 °C. There was -0.1 mm of rain. There was 13.3 hours of sunshine (81%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
April 10 » Ping-pong diplomacy: In an attempt to thaw relations with the United States, China hosts the U.S. table tennis team for a week-long visit.
May 19 » Mars probe program: Mars 2 is launched by the Soviet Union.
May 30 » Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars.
July 31 » Apollo program: Apollo 15 astronauts become the first to ride in a lunar rover.
September 20 » Having weakened after making landfall in Nicaragua the previous day, Hurricane Irene regains enough strength to be renamed Hurricane Olivia, making it the first known hurricane to cross from the Atlantic Ocean into the Pacific.
December 20 » The international aid organization Doctors Without Borders is founded by Bernard Kouchner and a group of journalists in Paris, France.
When copying data from this family tree, please include a reference to the origin: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I1858.php : accessed February 25, 2026), "Hennie Seezink".
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