The temperature on April 4, 1884 was about 12.0 °C. The air pressure was 2 kgf/m2 and came mainly from the southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 84%. 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.
February 1 » The first volume (A to Ant) of the Oxford English Dictionary is published.
March 27 » A mob in Cincinnati, Ohio, attacks members of a jury which had returned a verdict of manslaughter in what was seen as a clear case of murder; over the next few days the mob would riot and eventually destroy the courthouse.
May 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
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 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of marriage April 23, 1927
The temperature on April 23, 1927 was between 5.4 °C and 11.8 °C and averaged 8.6 °C. There was 2.6 mm of rain. There was 5.3 hours of sunshine (37%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the west. Source: KNMI
March 15 » The first Women's Boat Race between the University of Oxford and the University of Cambridge takes place on The Isis in Oxford.
April 27 » Carabineros de Chile (Chilean national police force and gendarmerie) are created.
April 30 » Douglas Fairbanks and Mary Pickford become the first celebrities to leave their footprints in concrete at Grauman's Chinese Theatre in Hollywood.
May 1 » The Union Labor Life Insurance Company is founded by the American Federation of Labor.
July 10 » Kevin O'Higgins TD, Vice-President of the Executive Council of the Irish Free State is assassinated by the IRA.
December 27 » Kern and Hammerstein's musical play Show Boat, considered to be the first true American musical play, opens at the Ziegfeld Theatre on Broadway.
Day of death April 21, 1971
The temperature on April 21, 1971 was between 3.2 °C and 17.7 °C and averaged 11.6 °C. There was 10.5 hours of sunshine (74%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 12 » The Harrisburg Seven: Rev. Philip Berrigan and five other activists are indicted on charges of conspiring to kidnap Henry Kissinger and of plotting to blow up the heating tunnels of federal buildings in Washington, D.C.
June 13 » Vietnam War: The New York Times begins publication of the Pentagon Papers.
September 21 » Bahrain, Bhutan and Qatar join the United Nations.
October 12 » The 2,500 year celebration of the Persian Empire begins.
November 6 » The United States Atomic Energy Commission tests the largest U.S. underground hydrogen bomb, code-named Cannikin, on Amchitka Island in the Aleutians.
December 4 » The PNS Ghazi, a submarine belonging to the Pakistan Navy, sinks during the course of the Indo-Pakistani Naval War of 1971.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I433.php : accessed January 7, 2026), "Gerrit Jan Jonker (1884-1971)".
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