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
January 25 » Richard Strauss's opera Elektra receives its debut performance at the Dresden State Opera.
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
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.
April 18 » Joan of Arc is beatified in Rome.
July 25 » Louis Blériot makes the first flight across the English Channel in a heavier-than-air machine from Calais to Dover, England, United Kingdom in 37 minutes.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
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 11 » BBC Television produces the world's first ever science fiction television programme, an adaptation of a section of the Karel Čapek play R.U.R., that coined the term "robot".
July 20 » The United States Department of Justice files suit in New York City against the motion picture industry charging violations of the Sherman Antitrust Act in regards to the studio system. The case would eventually result in a break-up of the industry in 1948.
July 31 » Archaeologists discover engraved gold and silver plates from King Darius the Great in Persepolis.
October 5 » In Nazi Germany, Jews' passports are invalidated.
October 30 » Orson Welles broadcasts his radio play of H. G. Wells's The War of the Worlds, causing anxiety in some of the audience in the United States.
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.
January 13 » United States Food and Drug Administration requires all blood donations to be labeled "paid" or "volunteer" donors.
February 8 » Proceedings of the United States Senate are broadcast on radio for the first time.
March 11 » Coastal Road massacre: At least 37 are killed and more than 70 are wounded when Fatah hijack an Israeli bus, prompting Israel's Operation Litani.
June 1 » The first international applications under the Patent Cooperation Treaty are filed.
June 9 » The Church of Jesus Christ of Latter-day Saints opens its priesthood to "all worthy men", ending a 148-year-old policy of excluding black men.
July 1 » The Northern Territory in Australia is granted self-government.
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 22, 2026), "Hendrik Klaver (1909-1978)".
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