The temperature on September 20, 1884 was about 15.7 °C. The air pressure was 1 kgf/m2 and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 68%. 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 19 » More than sixty tornadoes strike the Southern United States, one of the largest tornado outbreaks in U.S. history.
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.
July 3 » Dow Jones & Company publishes its first stock average.
July 5 » Germany takes possession of Cameroon.
December 10 » Mark Twain's Adventures of Huckleberry Finn is published.
Day of marriage May 15, 1909
The temperature on May 15, 1909 was between -0.4 °C and 10.9 °C and averaged 6.0 °C. There was 0.2 mm of rain. There was 2.7 hours of sunshine (17%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
February 15 » The Flores Theater fire in Acapulco, Mexico kills 250.
February 20 » Publication of the Futurist Manifesto in the French journal Le Figaro.
February 23 » The AEA Silver Dart makes the first powered flight in Canada and the British Empire.
August 30 » Burgess Shale fossils are discovered by Charles Doolittle Walcott.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
Day of death June 16, 1957
The temperature on June 16, 1957 was between 13.5 °C and 27.9 °C and averaged 22.1 °C. There was 15.5 hours of sunshine (93%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
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/I76660.php : accessed October 16, 2026), "Sjoerd van der Zwaag (1884-1957)".
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