The temperature on December 6, 1915 was between 5.4 °C and 12.7 °C and averaged 9.8 °C. There was 5.1 mm of rain. There was 1.1 hours of sunshine (14%). The average windspeed was 5 Bft (very strong wind) 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 24 » World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.
April 5 » Boxing challenger Jess Willard knocks out Jack Johnson in Havana, Cuba to become the Heavyweight Champion of the World.
July 5 » The Liberty Bell leaves Philadelphia by special train on its way to the Panama–Pacific International Exposition. This is the last trip outside Philadelphia that the custodians of the bell intend to permit.
July 25 » RFC Captain Lanoe Hawker becomes the first British pursuit aviator to earn the Victoria Cross.
August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
September 5 » The pacifist Zimmerwald Conference begins.
Day of marriage April 18, 1936
The temperature on April 18, 1936 was between 3.1 °C and 9.0 °C and averaged 5.8 °C. There was 0.9 mm of rain during 1.6 hours. There was 5.1 hours of sunshine (36%). The average windspeed was 6 Bft (strong wind) and was prevailing from the northwest. Source: KNMI
January 20 » King George V of the United Kingdom dies. His eldest son succeeds to the throne, becoming Edward VIII. The title Prince of Wales is not used for another 22 years.
February 26 » In the February 26 Incident, young Japanese military officers attempt to stage a coup against the government.
March 1 » The Hoover Dam is completed.
March 5 » First flight of K5054, the first prototype Supermarine Spitfire advanced monoplane fighter aircraft in the United Kingdom.
November 2 » The British Broadcasting Corporation initiates the BBC Television Service, the world's first regular, "high-definition" (then defined as at least 200 lines) service. Renamed BBC1 in 1964, the channel still runs to this day.
December 11 » Abdication Crisis: Edward VIII's abdication as King of the United Kingdom and the British Dominions beyond the Seas, and Emperor of India, becomes effective.
When copying data from this family tree, please include a reference to the origin: Jacobus Trox, "Lap family tree", database, Genealogy Online (https://www.genealogieonline.nl/lap-stamboom/I2179.php : accessed January 19, 2026), "Berendje Koekkoek (1915-)".
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