The temperature on January 1, 1911 was between 0.4 °C and 5.9 °C and averaged 3.5 °C. There was 5.9 mm of rain. There was 1.0 hours of sunshine (13%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
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 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
October 5 » The Kowloon–Canton Railway commences service.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
Day of marriage May 11, 1933
The temperature on May 11, 1933 was between 6.7 °C and 16.1 °C and averaged 10.3 °C. There was 2.3 mm of rain during 1.9 hours. There was 1.8 hours of sunshine (12%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
In The Netherlands , there was from May 26, 1933 to July 31, 1935 the cabinet Colijn II, with Dr. H. Colijn (ARP) as prime minister.
January 28 » The name Pakistan is coined by Choudhry Rahmat Ali Khan and is accepted by Indian Muslims who then thereby adopted it further for the Pakistan Movement seeking independence.
February 3 » Adolf Hitler announces that the expansion of Lebensraum into Eastern Europe, and its ruthless Germanisation, are the ultimate geopolitical objectives of Third Reich foreign policy.
February 15 » In Miami, Giuseppe Zangara attempts to assassinate US President-elect Franklin D. Roosevelt, but instead shoots Chicago mayor Anton J. Cermak, who dies of his wounds on March 6, 1933.
March 5 » Adolf Hitler's Nazi Party receives 43.9% at the Reichstag elections, which allows the Nazis to later pass the Enabling Act and establish a dictatorship.
November 7 » Fiorello H. La Guardia is elected the 99th mayor of New York City.
December 6 » U.S. federal judge John M. Woolsey rules that James Joyce's novel Ulysses is not obscene.
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/I139965.php : accessed October 9, 2026), "Jan Kooistra (1911-)".
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