The temperature on October 27, 1911 was between 6.2 °C and 12.8 °C and averaged 9.2 °C. There was 11.0 mm of rain. There was 3.1 hours of sunshine (31%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 22 » George V and Mary of Teck are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
July 24 » Hiram Bingham III re-discovers Machu Picchu, "the Lost City of the Incas".
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
Day of marriage November 23, 1939
The temperature on November 23, 1939 was between -2.7 °C and 2.6 °C and averaged 0.9 °C. There was 0.7 hours of sunshine (8%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
May 21 » The Canadian National War Memorial is unveiled by King George VI and Queen Elizabeth in Ottawa, Ontario, Canada.
August 15 » Twenty-six Junkers Ju 87 bombers commanded by Walter Sigel meet unexpected ground fog during a dive-bombing demonstration for Luftwaffe generals at Neuhammer. Thirteen of them crash and burn.
August 27 » First flight of the turbojet-powered Heinkel He 178, the world's first jet aircraft.
September 18 » World War II: The Polish government of Ignacy Mościcki flees to Romania.
October 6 » World War II: The Battle of Kock is the final combat of the September Campaign in Poland.
November 4 » World War II: U.S. President Franklin D. Roosevelt orders the United States Customs Service to implement the Neutrality Act of 1939, allowing cash-and-carry purchases of weapons by belligerents.
Day of death August 9, 2002
The temperature on August 9, 2002 was between 13.3 °C and 24.5 °C and averaged 18.3 °C. There was 1.7 mm of rain during 0.9 hours. There was 4.7 hours of sunshine (31%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from Monday, August 3, 1998 to Monday, July 22, 2002 the cabinet Kok II, with W. Kok (PvdA) as prime minister.
In The Netherlands , there was from Monday, July 22, 2002 to Tuesday, May 27, 2003 the cabinet Balkenende I, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
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/I119153.php : accessed October 13, 2026), "Auke Roelof Koopal (1911-2002)".
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