The temperature on April 9, 1914 was between 5.7 °C and 12.1 °C and averaged 9.3 °C. There was 0.1 mm of rain. There was 4.8 hours of sunshine (36%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
March 1 » The Republic of China joins the Universal Postal Union.
July 23 » Austria-Hungary issues a series of demands in an ultimatum to the Kingdom of Serbia demanding Serbia to allow the Austrians to determine who assassinated Archduke Franz Ferdinand. Serbia accepts all but one of those demands and Austria declares war on July 28.
August 1 » The German Empire declares war on the Russian Empire at the opening of World War I. The Swiss Army mobilizes because of World War I.
August 12 » World War I: The Battle of Halen a.k.a. Battle of the Silver Helmets a clash between large Belgian and German cavalry formations at Halen, Belgium.
August 28 » World War I: The Royal Navy defeats the German fleet in the Battle of Heligoland Bight.
September 11 » World War I: Australia invades German New Guinea, defeating a German contingent at the Battle of Bita Paka.
Day of marriage July 8, 1938
The temperature on July 8, 1938 was between 10.9 °C and 20.4 °C and averaged 16.4 °C. There was 0.7 mm of rain during 0.4 hours. There was 2.1 hours of sunshine (13%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
May 25 » Spanish Civil War: The bombing of Alicante kills 313 people.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
July 3 » World speed record for a steam locomotive is set in England, by the Mallard, which reaches a speed of 125.88 miles per hour (202.58km/h).
July 10 » Howard Hughes begins a 91-hour airplane flight around the world that will set a new record.
July 31 » Bulgaria signs a non-aggression pact with Greece and other states of Balkan Antanti (Turkey, Romania, Yugoslavia).
October 5 » In Nazi Germany, Jews' passports are invalidated.
Day of death June 20, 1982
The temperature on June 20, 1982 was between 10.1 °C and 19.5 °C and averaged 14.8 °C. There was 6.6 hours of sunshine (39%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Saturday, May 29, 1982 to Thursday, November 4, 1982 the cabinet Van Agt III, with Mr. A.A.M. van Agt (CDA) as prime minister.
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 2 » Hama massacre: The government of Syria attacks the town of Hama.
March 29 » The Canada Act 1982 receives the Royal Assent from Queen Elizabeth II, setting the stage for the Queen of Canada to proclaim the Constitution Act, 1982.
May 2 » Falklands War: The British nuclear submarine HMSConqueror sinks the Argentine cruiser ARA General Belgrano.
June 7 » Priscilla Presley opens Graceland to the public; the bathroom where Elvis Presley died five years earlier is kept off-limits.
June 13 » Fahd becomes King of Saudi Arabia upon the death of his brother, Khalid.
September 20 » Football players begin a 57-day strike during the 1982 NFL season.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I12422.php : accessed February 8, 2026), "Omer Polydoor de Groep (1914-1982)".
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