The temperature on December 1, 1884 was about -1.4 °C. The air pressure was 2 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 86%. 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 » Moses Fleetwood Walker becomes the first black person to play in a professional baseball game in the United States.
July 3 » Dow Jones & Company publishes its first stock average.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
December 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of death August 12, 1971
The temperature on August 12, 1971 was between 11.2 °C and 18.2 °C and averaged 15.3 °C. There was 0.9 mm of rain during 0.6 hours. There was 0.8 hours of sunshine (5%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
April 1 » Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh.
May 27 » Pakistani forces massacre over 200 civilians, mostly Bengali Hindus, in the Bagbati massacre.
August 18 » Vietnam War: Australia and New Zealand decide to withdraw their troops from Vietnam.
November 22 » In Britain's worst mountaineering tragedy, the Cairngorm Plateau Disaster, five children and one of their leaders are found dead from exposure in the Scottish mountains.
December 3 » Indo-Pakistani War of 1971: Pakistan launches a pre-emptive strike against India and a full-scale war begins.
December 4 » The Indian Navy attacks the Pakistan Navy and Karachi.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I9203.php : accessed February 26, 2026), "Johannes Bernardus Koch (1884-1971)".
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