The temperature on December 22, 1884 was about 3.0 °C. The air pressure was 30 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 77%. 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 31 » The arrival at Plymouth of Tāwhiao, King of Maoris, to claim the protection of Queen Victoria.
June 16 » The first purpose-built roller coaster, LaMarcus Adna Thompson's "Switchback Railway", opens in New York's Coney Island amusement park.
October 22 » The International Meridian Conference designates the Royal Observatory, Greenwich as the world's prime meridian.
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 20, 1944
The temperature on April 20, 1944 was between 5.0 °C and 15.0 °C and averaged 8.7 °C. There was 0.6 mm of rain during 1.8 hours. There was 4.1 hours of sunshine (29%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
June 13 » World War II: German combat elements, reinforced by the 17th SS Panzergrenadier Division, launch a counterattack on American forces near Carentan.
August 6 » The Warsaw Uprising occurs on August 1. It is brutally suppressed and all able-bodied men in Kraków are detained afterwards to prevent a similar uprising, the Kraków Uprising, that was planned but never carried out.
August 12 » Waffen-SS troops massacre 560 people in Sant'Anna di Stazzema.
September 4 » World War II: The British 11th Armoured Division liberates the Belgian city of Antwerp.
October 5 » The Provisional Government of the French Republic enfranchises women.
October 18 » World War II: Soviet Union begins the liberation of Czechoslovakia from Nazi Germany.
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/I67364.php : accessed October 24, 2026), "Harmen Postma (1884-1944)".
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