The temperature on April 5, 1911 was between -5.5 °C and 1.7 °C and averaged -2.2 °C. There was 7.7 hours of sunshine (58%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 21 » The first Monte Carlo Rally takes place.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
Day of death May 3, 1921
The temperature on May 3, 1921 was between 0.2 °C and 9.3 °C and averaged 6.1 °C. There was 3.7 mm of rain. There was 0.6 hours of sunshine (4%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 12 » Bolsheviks launch a revolt in Georgia as a preliminary to the Red Army invasion of Georgia.
March 6 » Portuguese Communist Party is founded as the Portuguese Section of the Communist International.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
May 3 » West Virginia becomes the first state to legislate a broad sales tax, but does not implement it until a number of years later due to enforcement issues.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
November 4 » Japanese Prime Minister Hara Takashi is assassinated in Tokyo.
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/I135618.php : accessed February 15, 2026), "Aldert Piersma (1911-1921)".
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