The temperature on July 23, 1909 was between 11.7 °C and 19.3 °C and averaged 15.4 °C. There was 4.3 mm of rain. There was 4.9 hours of sunshine (31%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 15 » The Flores Theater fire in Acapulco, Mexico kills 250.
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
March 4 » U.S. President William Taft used what became known as a Saxbe fix, a mechanism to avoid the restriction of the U.S. Constitution's Ineligibility Clause, to appoint Philander C. Knox as U.S. Secretary of State.
March 31 » Serbia formally withdraws its opposition to Austro-Hungarian actions in the Bosnian Crisis.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
September 7 » Eugène Lefebvre crashes a new French-built Wright biplane during a test flight at Juvisy, south of Paris, becoming the first aviator in the world to lose his life in a powered heavier-than-air craft.
Day of marriage May 21, 1938
The temperature on May 21, 1938 was between 6.5 °C and 13.3 °C and averaged 9.7 °C. There was 4.1 mm of rain during 5.2 hours. There was 0.6 hours of sunshine (4%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 18 » Second Sino-Japanese War: During the Nanking Massacre, the Nanking Safety Zone International Committee is renamed "Nanking International Rescue Committee", and the safety zone in place for refugees falls apart.
March 18 » Mexico creates Pemex by expropriating all foreign-owned oil reserves and facilities.
July 3 » United States President Franklin D. Roosevelt dedicates the Eternal Light Peace Memorial and lights the eternal flame at Gettysburg Battlefield.
July 28 » Hawaii Clipper disappears between Guam and Manila as the first loss of an airliner in trans-Pacific China Clipper service.
November 9 » The Nazi German diplomat Ernst vom Rath dies from gunshot wounds by Herschel Grynszpan, an act which the Nazis used as an excuse to instigate the 1938 national pogrom, also known as Kristallnacht.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
Day of death November 6, 1978
The temperature on November 6, 1978 was between 4.3 °C and 9.0 °C and averaged 6.9 °C. There was -0.1 mm of rain. The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 19 » Egyptian forces raid Larnaca International Airport in an attempt to intervene in a hijacking, without authorisation from the Republic of Cyprus authorities. The Cypriot National Guard and Police forces kill 15 Egyptian commandos and destroy the Egyptian C-130 transport plane in open combat.
March 5 » The Landsat 3 is launched from Vandenberg Air Force Base in California.
March 16 » Former Italian Prime Minister Aldo Moro is kidnapped. (He is later murdered by his captors.)
April 17 » Mir Akbar Khyber is assassinated, provoking a communist coup d'état in Afghanistan.
May 3 » The first unsolicited bulk commercial email (which would later become known as "spam") is sent by a Digital Equipment Corporation marketing representative to every ARPANET address on the west coast of the United States.
November 23 » The Geneva Frequency Plan of 1975 goes into effect, realigning many of Europe's longwave and mediumwave broadcasting frequencies.
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/I118087.php : accessed October 15, 2026), "Hendrik Klaver (1909-1978)".
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