The temperature on May 19, 1909 was between 4.4 °C and 17.7 °C and averaged 11.7 °C. There was 9.6 hours of sunshine (61%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
February 2 » The Paris Film Congress opens. An attempt by European producers to form an equivalent to the MPCC cartel in the United States.
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
April 6 » Robert Peary and Matthew Henson become the first people to reach the North Pole; Peary's claim has been disputed because of failings in his navigational ability.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
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.
August 24 » Workers start pouring concrete for the Panama Canal.
Christening day September 9, 1917
The temperature on September 9, 1917 was between 11.6 °C and 18.8 °C and averaged 15.2 °C. There was 0.7 hours of sunshine (5%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. 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.
January 19 » Silvertown explosion: A blast at a munitions factory in London kills 73 and injures over 400. The resulting fire causes over £2,000,000 worth of damage.
February 24 » World War I: The U.S. ambassador Walter Hines Page to the United Kingdom is given the Zimmermann Telegram, in which Germany pledges to ensure the return of New Mexico, Texas, and Arizona to Mexico if Mexico declares war on the United States.
March 8 » The United States Senate votes to limit filibusters by adopting the cloture rule.
April 2 » World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
October 24 » First World War: Italy suffers a disastrous defeat on the Austro-Italian front.
November 8 » The first Council of People's Commissars is formed, including Vladimir Lenin, Leon Trotsky and Joseph Stalin.
Day of marriage April 3, 1948
The temperature on April 3, 1948 was between 4.0 °C and 10.4 °C and averaged 6.5 °C. There was 8.0 mm of rain during 3.1 hours. There was 7.0 hours of sunshine (54%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
March 20 » With a Musicians Union ban lifted, the first telecasts of classical music in the United States, under Eugene Ormandy and Arturo Toscanini, are given on CBS and NBC.
March 25 » The first successful tornado forecast predicts that a tornado will strike Tinker Air Force Base, Oklahoma.
May 15 » Following the expiration of The British Mandate for Palestine, the Kingdom of Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia invade Israel thus starting the 1948 Arab–Israeli War.
May 29 » United Nations Truce Supervision Organization is founded.
July 12 » Israeli Prime Minister David Ben-Gurion orders the expulsion of Palestinians from the towns of Lod and Ramla.
August 25 » The House Un-American Activities Committee holds first-ever televised congressional hearing: "Confrontation Day" between Whittaker Chambers and Alger Hiss.
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/I66713.php : accessed February 12, 2026), "Hielke Helder (1909-)".
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