The temperature on September 4, 1884 was about 15.5 °C. There was 5 mm of rain. The air pressure was 1 kgf/m2 and came mainly from the south-southeast. The airpressure was 75 cm mercury. The atmospheric humidity was 96%. 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.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
October 13 » The International Meridian Conference establishes the meridian of the Greenwich Observatory as the prime meridian.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
November 1 » The Gaelic Athletic Association is set up in Hayes's Hotel in Thurles, County Tipperary.
December 6 » The Washington Monument in Washington, D.C., is completed.
December 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of death April 21, 1967
The temperature on April 21, 1967 was between 1.1 °C and 9.2 °C and averaged 5.7 °C. There was 1.8 mm of rain during 1.4 hours. There was 7.3 hours of sunshine (51%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 15 » The first Super Bowl is played in Los Angeles. The Green Bay Packers defeat the Kansas City Chiefs 35–10.
June 7 » Six-Day War: Israeli soldiers enter Jerusalem.
August 14 » UK Marine Broadcasting Offences Act declares participation in offshore pirate radio illegal.
October 26 » Mohammad Reza Pahlavi crowns himself Emperor of Iran.
November 21 » Vietnam War: American General William Westmoreland tells news reporters: "I am absolutely certain that whereas in 1965 the enemy was winning, today he is certainly losing."
December 3 » At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
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/I78730.php : accessed October 1, 2026), "Johannes Zuidersma (1884-1967)".
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