The temperature on February 18, 1911 was between 7.7 °C and 9.9 °C and averaged 9.4 °C. The average windspeed was 6 Bft (strong wind) and was prevailing from the west-southwest. Source: KNMI
January 3 » A magnitude 7.7 earthquake destroys the city of Almaty in Russian Turkestan.
May 15 » In Standard Oil Co. of New Jersey v. United States, the United States Supreme Court declares Standard Oil to be an "unreasonable" monopoly under the Sherman Antitrust Act and orders the company to be broken up.
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.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
October 5 » The Kowloon–Canton Railway commences service.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
Day of marriage May 20, 1939
The temperature on May 20, 1939 was between 1.7 °C and 15.8 °C and averaged 9.1 °C. There was 12.2 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
March 26 » Spanish Civil War: Nationalists begin their final offensive of the war.
September 1 » Adolf Hitler signs an order to begin the systematic euthanasia of mentally ill and disabled people.
September 6 » World War II: Britain suffers its first fighter pilot casualty of the Second World War at the Battle of Barking Creek as a result of friendly fire.
October 16 » World War II: No. 603 Squadron RAF intercepts the first Luftwaffe raid on Britain.
November 8 » Venlo Incident: Two British agents of SIS are captured by the Germans.
November 23 » World War II: HMSRawalpindi is sunk by the German battleships Scharnhorst and Gneisenau.
Day of death February 23, 1979
The temperature on February 23, 1979 was between -0.3 °C and 3.7 °C and averaged 1.7 °C. There was 3.4 mm of rain during 2.7 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. 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 13 » An intense windstorm strikes western Washington and sinks a ⁄2-mile-long section of the Hood Canal Bridge.
February 18 » Richard Petty wins a then-record sixth Daytona 500 after leaders Donnie Allison and Cale Yarborough crash on the final lap of the first NASCAR race televised live flag-to-flag.
May 28 » Konstantinos Karamanlis signs the full treaty of the accession of Greece with the European Economic Community.
May 30 » Downeast Flight 46 crashes on approach to Knox County Regional Airport in Rockland, Maine, killing 17.
September 1 » The American space probe Pioneer 11 becomes the first spacecraft to visit Saturn when it passes the planet at a distance of 21,000 kilometres (13,000mi).
October 6 » Pope John Paul II becomes the first pontiff to visit the White House.
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/I112928.php : accessed October 19, 2026), "Ids van der Ploeg (1911-1979)".
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