The temperature on September 10, 1912 was between 6.9 °C and 15.0 °C and averaged 10.7 °C. There was 2.4 mm of rain. There was 1.7 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 5 » The 6th All-Russian Conference of the Russian Social Democratic Labour Party (Prague Party Conference) opens. In the course of the conference, Vladimir Lenin and his supporters break from the rest of the party to form the Bolshevik movement.
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
February 25 » Marie-Adélaïde, the eldest of six daughters of Guillaume IV, becomes the first reigning Grand Duchess of Luxembourg.
August 6 » The Bull Moose Party meets at the Chicago Coliseum.
September 28 » The Ulster Covenant is signed by some 500,000 Ulster Protestant Unionists in opposition to the Third Irish Home Rule Bill.
December 3 » Bulgaria, Greece, Montenegro, and Serbia (the Balkan League) sign an armistice with the Ottoman Empire, temporarily halting the First Balkan War. (The armistice will expire on February 3, 1913, and hostilities will resume.)
Day of marriage August 4, 1934
The temperature on August 4, 1934 was between 9.5 °C and 19.7 °C and averaged 15.1 °C. There was 2.5 mm of rain during 4.8 hours. There was 1.7 hours of sunshine (11%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 26 » The Apollo Theater reopens in Harlem, New York City.
February 21 » Augusto Sandino is executed.
July 11 » Engelbert Zaschka of Germany flies his large human-powered aircraft, the Zaschka Human-Power Aircraft, about 20 meters at Berlin Tempelhof Airport without assisted take-off.
August 22 » Bill Woodfull of Australia becomes the only cricket captain to twice regain The Ashes.
October 22 » In East Liverpool, Ohio, FBI agents shoot and kill notorious bank robber Pretty Boy Floyd.
December 5 » Abyssinia Crisis: Italian troops attack Wal Wal in Abyssinia, taking four days to capture the city.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I9191.php : accessed February 15, 2026), "Pieter Poelstra (1912-)".
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