The temperature on September 14, 1909 was between 10.7 °C and 17.0 °C and averaged 13.8 °C. There was 5.8 hours of sunshine (45%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
March 23 » Theodore Roosevelt leaves New York for a post-presidency safari in Africa. The trip is sponsored by the Smithsonian Institution and National Geographic Society.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
April 14 » A massacre is organized by the Ottoman Empire against the Armenian population of Cilicia.
September 23 » The novel Le Fantôme de l'Opéra (The Phantom of the Opera), by Gaston Leroux, is published as a serialization in Le Gaulois.
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 December 18, 1934
The temperature on December 18, 1934 was between 2.8 °C and 7.9 °C and averaged 5.4 °C. There was 12.5 mm of rain during 4.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 1 » A "Law for the Prevention of Genetically Diseased Offspring" comes into effect in Nazi Germany.
May 21 » Oskaloosa, Iowa, becomes the first municipality in the United States to fingerprint all of its citizens.
May 23 » Infamous American bank robbers Bonnie and Clyde are ambushed by police and killed in Bienville Parish, Louisiana.
July 2 » The Night of the Long Knives ends with the death of Ernst Röhm.
July 5 » "Bloody Thursday": Police open fire on striking longshoremen in San Francisco.
September 18 » The Soviet Union is admitted to the League of Nations.
Day of death September 12, 1974
The temperature on September 12, 1974 was between 10.1 °C and 22.6 °C and averaged 16.5 °C. There was 1.9 mm of rain during 2.3 hours. There was 3.7 hours of sunshine (29%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
March 29 » NASA's Mariner 10 becomes the first space probe to fly by Mercury.
April 1 » The Local Government Act 1972 of England and Wales comes into effect.
April 29 » Watergate scandal: United States President Richard Nixon announces the release of edited transcripts of White House tape recordings relating to the scandal.
May 18 » Nuclear weapons testing: Under project Smiling Buddha, India successfully detonates its first nuclear weapon becoming the sixth nation to do so.
June 30 » The Baltimore municipal strike of 1974 begins.
July 30 » Watergate scandal: U.S. President Richard Nixon releases subpoenaed White House recordings after being ordered to do so by the Supreme Court of the United States.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I19560.php : accessed February 6, 2026), "Johannes Gerhardus Ehlers (1909-1974)".
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