The temperature on February 20, 1911 was between 0.5 °C and 7.1 °C and averaged 3.1 °C. There was 2.7 mm of rain. There was 2.2 hours of sunshine (21%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
Day of marriage June 2, 1938
The temperature on June 2, 1938 was between 7.8 °C and 18.0 °C and averaged 12.7 °C. There was 0.1 mm of rain. There was 7.7 hours of sunshine (47%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
January 3 » The March of Dimes is established as a foundation to combat infant polio by President Franklin D. Roosevelt.
April 30 » The animated cartoon short Porky's Hare Hunt debuts in movie theaters, introducing Happy Rabbit, an early version of Bugs Bunny.
May 25 » Spanish Civil War: The bombing of Alicante kills 313 people.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
September 5 » Chile: A group of youths affiliated with the fascist National Socialist Movement of Chile are executed after surrendering during a failed coup.
October 14 » The first flight of the Curtiss P-40 Warhawk fighter plane.
Day of death July 25, 1997
The temperature on July 25, 1997 was between 14.8 °C and 18.9 °C and averaged 16.4 °C. There was 7.1 mm of rain during 4.2 hours. There was 3.2 hours of sunshine (20%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
March 26 » Thirty-nine bodies are found in the Heaven's Gate mass suicides.
April 29 » The Chemical Weapons Convention of 1993 enters into force, outlawing the production, stockpiling and use of chemical weapons by its signatories.
May 6 » The Bank of England is given independence from political control, the most significant change in the bank's 300-year history.
August 7 » Fine Air Flight 101 crashes after takeoff from Miami International Airport, killing five people.
September 19 » The Guelb El-Kebir massacre in Algeria kills 53 people.
December 29 » Hong Kong begins to kill all the city's 1.25 million chickens to stop the spread of a potentially deadly influenza strain.
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/I167675.php : accessed October 13, 2026), "Halbe Zijlstra (1911-1997)".
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