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
January 16 » Ernest Shackleton's expedition finds the magnetic South Pole.
February 15 » The Flores Theater fire in Acapulco, Mexico kills 250.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
June 26 » The Science Museum in London comes into existence as an independent entity.
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 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
February 6 » Far-right leagues rally in front of the Palais Bourbon in an attempted coup against the French Third Republic, creating a political crisis in France.
May 23 » Infamous American bank robbers Bonnie and Clyde are ambushed by police and killed in Bienville Parish, Louisiana.
June 30 » The Night of the Long Knives, Adolf Hitler's violent purge of his political rivals in Germany, takes place.
July 5 » "Bloody Thursday": Police open fire on striking longshoremen in San Francisco.
August 19 » The first All-American Soap Box Derby is held in Dayton, Ohio.
December 29 » Japan renounces the Washington Naval Treaty of 1922 and the London Naval Treaty of 1930.
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.
February 4 » M62 coach bombing: The Provisional Irish Republican Army (IRA) explodes a bomb on a bus carrying off-duty British Armed Forces personnel in Yorkshire, England. Nine soldiers and three civilians are killed.
March 1 » Watergate scandal: Seven are indicted for their role in the Watergate break-in and charged with conspiracy to obstruct justice.
May 15 » Ma'alot massacre: Members of the Democratic Front for the Liberation of Palestine attack and take hostages at an Israeli school; a total of 31 people are killed, including 22 schoolchildren.
August 1 » Cyprus dispute: The United Nations Security Council authorizes the UNFICYP to create the "Green Line", dividing Cyprus into two zones.
August 30 » A Belgrade–Dortmund express train derails at the main train station in Zagreb killing 153 passengers.
November 22 » The United Nations General Assembly grants the Palestine Liberation Organization observer status.
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 14, 2026), "Johannes Gerhardus Ehlers (1909-1974)".
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