The temperature on September 21, 1888 was about 12.7 °C. The air pressure was 4 kgf/m2 and came mainly from the east-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 80%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
May 16 » Nikola Tesla delivers a lecture describing the equipment which will allow efficient generation and use of alternating currents to transmit electric power over long distances.
June 15 » Crown Prince Wilhelm becomes Kaiser Wilhelm II; he will be the last Emperor of the German Empire. Due to the death of his predecessors Wilhelm I and Frederick III, 1888 is the Year of the Three Emperors.
September 4 » George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.
September 8 » Isaac Peral's submarine is first tested.
October 14 » Louis Le Prince films the first motion picture, Roundhay Garden Scene.
October 29 » The Convention of Constantinople is signed, guaranteeing free maritime passage through the Suez Canal during war and peace.
Day of death December 1, 1969
The temperature on December 1, 1969 was between -1.2 °C and 1.0 °C and averaged -0.1 °C. There was 0.8 mm of rain during 1.1 hours. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
March 18 » The United States begins secretly bombing the Sihanouk Trail in Cambodia, used by communist forces to infiltrate South Vietnam.
April 5 » Vietnam War: Massive antiwar demonstrations occur in many U.S. cities.
April 17 » Sirhan Sirhan is convicted of assassinating Robert F. Kennedy.
May 20 » The Battle of Hamburger Hill in Vietnam ends.
July 20 » Apollo program: Apollo 11's crew successfully makes the first manned landing on the Moon in the Sea of Tranquility. Americans Neil Armstrong and Buzz Aldrin become the first humans to walk on the Moon six and a half hours later.
December 1 » Vietnam War: The first draft lottery in the United States is held since World War II.
When copying data from this family tree, please include a reference to the origin: Hein Kersten, "Family tree Kersten", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kersten/I37.php : accessed February 15, 2026), "Johan BONHOF (1888-1969)".
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