The temperature on May 17, 1884 was about 15.4 °C. The air pressure was 4 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 81%. 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.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
October 6 » The Naval War College of the United States is founded in Rhode Island.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
December 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of death August 14, 1961
The temperature on August 14, 1961 was between 10.7 °C and 18.2 °C and averaged 14.5 °C. There was 2.0 mm of rain during 2.1 hours. There was 2.5 hours of sunshine (17%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 23 » The Portuguese luxury cruise ship Santa Maria is hijacked by opponents of the Estado Novo regime with the intention of waging war until dictator António de Oliveira Salazar is overthrown.
January 26 » John F. Kennedy appoints Janet G. Travell to be the first woman Physician to the President.
March 1 » Uganda becomes self-governing and holds its first elections.
April 9 » The Pacific Electric Railway in Los Angeles, once the largest electric railway in the world, ends operations.
September 20 » Greek general Konstantinos Dovas becomes Prime Minister of Greece.
October 1 » East and West Cameroon merge to form the Federal Republic of Cameroon.
When copying data from this family tree, please include a reference to the origin: Peter de Jong, "Pedigree of De Jong, Koelé families", database, Genealogy Online (https://www.genealogieonline.nl/de-jong-stamboom/I4960.php : accessed February 16, 2026), "Hendrik Jan Eijkelkamp (1884-1961)".
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