The temperature on February 9, 1971 was between 4.8 °C and 7.4 °C and averaged 5.9 °C. The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the west. Source: KNMI
January 1 » Cigarette advertisements are banned on American television.
February 9 » The 6.5–6.7 Mw Sylmar earthquake hits the Greater Los Angeles Area with a maximum Mercalli intensity of XI (Extreme), killing 64 and injuring 2,000.
February 21 » The Convention on Psychotropic Substances is signed at Vienna.
March 8 » The Fight of the Century between Joe Frazier and Muhammad Ali commences. Frazier wins in 15 rounds via unanimous decision.
March 12 » The 1971 Turkish military memorandum is sent to the Süleyman Demirel government of Turkey and the government resigns.
July 31 » Apollo program: Apollo 15 astronauts become the first to ride in a lunar rover.
When copying data from this family tree, please include a reference to the origin: Marieke Cooper, "Family tree Cooper, Kooper, Oostwal, Robert, Ooteman en Blokland", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-cooper/I618.php : accessed January 22, 2026), "Derill Blokland (1971-2020)".
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