February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
May 8 » The Irish Literary Theatre in Dublin produced its first play.
July 11 » Fiat founded by Giovanni Agnelli in Turin, Italy.
July 17 » NEC Corporation is organized as the first Japanese joint venture with foreign capital.
September 13 » Henry Bliss is the first person in the United States to be killed in an automobile accident.
November 2 » The Boers begin their 118-day siege of British-held Ladysmith during the Second Boer War.
Day of death April 12, 1971
The temperature on April 12, 1971 was between 0.9 °C and 12.0 °C and averaged 6.5 °C. There was -0.1 mm of rain. There was 6.2 hours of sunshine (45%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 22 » The Singapore Declaration, one of the two most important documents to the uncodified constitution of the Commonwealth of Nations, is issued.
February 8 » The NASDAQ stock market index opens for the first time.
February 26 » U.N. Secretary-General U Thant signs United Nations proclamation of the vernal equinox as Earth Day.
July 11 » Copper mines in Chile are nationalized.
November 15 » Intel releases the world's first commercial single-chip microprocessor, the 4004.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I78603.php : accessed October 22, 2026), "Herman Piersma (1899-1971)".
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