The temperature on September 4, 1919 was between 11.0 °C and 19.6 °C and averaged 15.4 °C. There was 1.7 hours of sunshine (13%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 5 » The German Workers' Party, which would become the Nazi Party, is founded in Munich.
June 7 » Sette Giugno: Nationalist riots break out in Valletta, the capital of Malta. British soldiers fire into the crowd, killing four people.
June 15 » John Alcock and Arthur Brown complete the first nonstop transatlantic flight when they reach Clifden, County Galway, Ireland.
July 11 » The eight-hour day and free Sunday become law for workers in the Netherlands.
August 8 » The Anglo-Afghan Treaty of 1919 is signed. It establishes peaceful relations between Afghanistan and the UK, and confirms the Durand line as the mutual border. In return, the UK is no longer obligated to subsidize the Afghan government.
October 28 » The U.S. Congress passes the Volstead Act over President Wilson's veto, paving the way for Prohibition to begin the following January.
Day of marriage January 6, 1948
The temperature on January 6, 1948 was between 1.7 °C and 6.0 °C and averaged 3.0 °C. There was 1.0 mm of rain during 1.6 hours. There was 3.4 hours of sunshine (43%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-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).
February 19 » The Conference of Youth and Students of Southeast Asia Fighting for Freedom and Independence convenes in Calcutta.
March 17 » Belgium, France, Luxembourg, the Netherlands and the United Kingdom sign the Treaty of Brussels, a precursor to the North Atlantic Treaty establishing NATO.
July 8 » The United States Air Force accepts its first female recruits into a program called Women in the Air Force (WAF).
October 29 » Israeli-Palestinian conflict: Safsaf massacre: Israeli soldiers capture the Palestinian village of Safsaf in the Galilee; after, between 52 and 64 villagers are massacred by the IDF.
December 10 » The Human Rights Convention is signed by the United Nations.
December 14 » Thomas T. Goldsmith Jr. and Estle Ray Mann are granted a patent for their cathode-ray tube amusement device, the earliest known interactive electronic game.
Day of death November 17, 2009
The temperature on November 17, 2009 was between 8.9 °C and 12.7 °C and averaged 10.6 °C. There was 1.3 hours of sunshine (15%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Thursday, February 22, 2007 to Thursday, October 14, 2010 the cabinet Balkenende IV, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
January 15 » US Airways Flight 1549 ditches safely in the Hudson River after the plane collides with birds less than two minutes after take-off.
March 4 » The International Criminal Court (ICC) issues an arrest warrant for Sudanese President Omar Hassan al-Bashir for war crimes and crimes against humanity in Darfur. Al-Bashir is the first sitting head of state to be indicted by the ICC since its establishment in 2002.
April 3 » Jiverly Antares Wong opens fire at the American Civic Association immigration center in Binghamton, New York, killing thirteen and wounding four before committing suicide.
April 10 » President of Fiji Ratu Josefa Iloilo announces the abrogation of the constitution and assumes all governance in the country, creating a constitutional crisis.
October 28 » The 28 October 2009 Peshawar bombing kills 117 and wounds 213.
November 27 » Nevsky Express bombing: A bomb explodes on the Nevsky Express train between Moscow and Saint Petersburg, derailing it and causing 28 deaths and 96 injuries.
When copying data from this family tree, please include a reference to the origin: Louis Kramer, "Kramer Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/kramer_stamboom/I382.php : accessed March 18, 2026), "Willem Cornelis Koopman (1919-2009)".
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.