January 23 » The Malolos Constitution is inaugurated, establishing the First Philippine Republic. Emilio Aguinaldo is sworn in as its first President.
February 2 » The Australian Premiers' Conference held in Melbourne decides to locate Australia's capital city, Canberra, between Sydney and Melbourne.
March 27 » Emilio Aguinaldo leads Filipino forces for the only time during the Philippine–American War at the Battle of Marilao River.
April 18 » The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.
September 13 » Henry Bliss is the first person in the United States to be killed in an automobile accident.
November 29 » FC Barcelona is founded by Catalan, Spanish and Englishmen. It later develops into one of Spanish football's most iconic and strongest teams.
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
April 1 » Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh.
April 17 » The Provisional Government of Bangladesh is formed.
August 15 » President Richard Nixon completes the break from the gold standard by ending convertibility of the United States dollar into gold by foreign investors.
September 28 » The Parliament of the UK passes the Misuse of Drugs Act 1971, banning the medicinal use of cannabis.
October 1 » The first practical CT scanner is used to diagnose a patient.
November 21 » Indian troops, partly aided by Mukti Bahini (Bengali guerrillas), defeat the Pakistan army in the Battle of Garibpur.
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 February 16, 2026), "Herman Piersma (1899-1971)".
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