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.
April 25 » Anzac Day is commemorated for the first time on the first anniversary of the landing at ANZAC Cove.
July 19 » World War I: Battle of Fromelles: British and Australian troops attack German trenches as part of the Battle of the Somme.
September 7 » US federal employees win the right to Workers' compensation by Federal Employers Liability Act (39 Stat. 742; 5 U.S.C. 751)
September 15 » World War I: Tanks are used for the first time in battle, at the Battle of the Somme.
November 13 » World War I: Prime Minister of Australia Billy Hughes is expelled from the Labor Party over his support for conscription.
December 6 » World War I: The Central Powers capture Bucharest.
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.
February 29 » In a ceremony held in Berkeley, California, physicist Ernest Lawrence receives the 1939 Nobel Prize in Physics from Sweden's Consul General in San Francisco.
May 5 » World War II: Norwegian refugees form a government-in-exile in London.
May 7 » World War II: The Norway Debate in the British House of Commons begins, and leads to the replacement of Prime Minister Neville Chamberlain with Winston Churchill three days later.
June 7 » King Haakon VII, Crown Prince Olav and the Norwegian government leave Tromsø and go into exile in London. They return exactly five years later.
August 25 » World War II: The first Bombing of Berlin by the British Royal Air Force.
November 16 » New York City's "Mad Bomber" George Metesky places his first bomb at a Manhattan office building used by Consolidated Edison.
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
March 24 » Kosovo war: NATO began attacks on Yugoslavia without United Nations Security Council (UNSC) approval, marking the first time NATO has attacked a sovereign country.
April 18 » Wayne Gretzky, the National Hockey League's all-time points scorer, plays his final game at Madison Square Garden as a teammate of the New York Rangers in a 2-1 overtime loss to the Pittsburgh Penguins. Gretzky recorded his final career point, an assist, bringing his career point total to 2,857.
May 3 » The southwestern portion of Oklahoma City is devastated by an F5 tornado, killing forty-five people, injuring 665, and causing $1billion in damage. The tornado is one of 66 from the 1999 Oklahoma tornado outbreak. This tornado also produces the highest wind speed ever recorded, measured at 301 +/- 20mph (484 +/- 32km/h).
May 24 » The International Criminal Tribunal for the former Yugoslavia in The Hague, Netherlands indicts Slobodan Milošević and four others for war crimes and crimes against humanity committed in Kosovo.
August 31 » The first of a series of bombings in Moscow kills one person and wounds 40 others.
December 26 » The storm Lothar sweeps across Central Europe, killing 137 and causing US$1.3 billion in damage.
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 18, 2026), "Roelf Koets (1916-1999)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.