The temperature on June 1, 1916 was between 8.0 °C and 20.5 °C and averaged 14.7 °C. There was 8.1 hours of sunshine (49%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-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.
January 12 » Both Oswald Boelcke and Max Immelmann, for achieving eight aerial victories each over Allied aircraft, receive the German Empire's highest military award, the Pour le Mérite as the first German aviators to earn it.
July 15 » In Seattle, Washington, William Boeing and George Conrad Westervelt incorporate Pacific Aero Products (later renamed Boeing).
July 19 » World War I: Battle of Fromelles: British and Australian troops attack German trenches as part of the Battle of the Somme.
August 29 » The United States passes the Philippine Autonomy Act.
November 5 » The Everett massacre takes place in Everett, Washington as political differences lead to a shoot-out between the Industrial Workers of the World organizers and local police.
December 18 » World War I: The Battle of Verdun ends when German forces under Chief of staff Erich von Falkenhayn are defeated by the French, and suffer 337,000 casualties.
Day of marriage March 14, 1940
The temperature on March 14, 1940 was between -1.9 °C and 5.9 °C and averaged 0.5 °C. There was 26.8 mm of rain during 13.7 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
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.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
May 25 » World War II: The German 2nd Panzer Division captures the port of Boulogne-sur-Mer; the surrender of the last French and British troops marks the end of the Battle of Boulogne.
June 10 » World War II: U.S. President Franklin D. Roosevelt denounces Italy's actions in his "Stab in the Back" speech at the graduation ceremonies of the University of Virginia.
September 9 » Treznea Massacre in Transylvania.
September 18 » World War II: The British liner SSCity of Benares is sunk by German submarine U-48; those killed include 77 child refugees.
September 29 » Two Avro Ansons collide in mid-air over New South Wales, Australia, remain locked together, then land safely.
November 8 » Greco-Italian War: The Italian invasion of Greece fails as outnumbered Greek units repulse the Italians in the Battle of Elaia–Kalamas.
Day of death February 27, 1999
The temperature on February 27, 1999 was between 4.7 °C and 7.0 °C and averaged 5.8 °C. There was 1.9 mm of rain during 3.1 hours. The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 1 » Euro currency is introduced in 11 member nations of the European Union (with the exception of the United Kingdom, Denmark, Greece and Sweden; Greece later adopts the euro).
January 19 » British Aerospace agrees to acquire the defence subsidiary of the General Electric Company plc, forming BAE Systems in November 1999.
February 12 » United States President Bill Clinton is acquitted by the United States Senate in his impeachment trial.
June 1 » American Airlines Flight 1420 slides and crashes while landing at Little Rock National Airport, killing 11 people on a flight from Dallas to Little Rock.
October 26 » Britain's House of Lords votes to end the right of hereditary peers to vote in Britain's upper chamber of Parliament.
November 2 » Xerox murders: In the worst mass murder in the history of Hawaii, a gunman shoots at eight people in his workplace, killing seven.
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/I189781.php : accessed October 20, 2026), "Roelf Koets (1916-1999)".
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