The temperature on April 13, 1883 was about 6.7 °C. The air pressure was 1 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 82%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
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.
January 19 » The first electric lighting system employing overhead wires, built by Thomas Edison, begins service at Roselle, New Jersey.
February 23 » Alabama becomes the first U.S. state to enact an anti-trust law.
May 20 » Krakatoa begins to erupt; the volcano explodes three months later, killing more than 36,000 people.
May 30 » In New York City, a stampede on the recently opened Brooklyn Bridge killed twelve people.
October 4 » First run of the Orient Express.
October 22 » Mödling and Hinterbrühl Tram, Vienna, Austria, first electric tram powered by overhead wire.
Day of marriage May 9, 1906
The temperature on May 9, 1906 was between 9.2 °C and 22.4 °C and averaged 15.1 °C. There was 11.7 hours of sunshine (76%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I7191.php : accessed January 21, 2026), "Johannes Willem Unkel (1883-????)".
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