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.
April 20 » Pope Leo XIII publishes the encyclical Humanum genus.
May 1 » The Federation of Organized Trades and Labor Unions demands the eight-hour work day in the United States.
July 5 » Germany takes possession of Cameroon.
October 14 » George Eastman receives a U.S. Government patent on his new paper-strip photographic film.
December 6 » The Washington Monument in Washington, D.C., is completed.
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
March 4 » U.S. President William Taft used what became known as a Saxbe fix, a mechanism to avoid the restriction of the U.S. Constitution's Ineligibility Clause, to appoint Philander C. Knox as U.S. Secretary of State.
March 10 » By signing the Anglo-Siamese Treaty of 1909, Thailand relinquishes its sovereignty over the Malay states of Kedah, Kelantan, Perlis and Terengganu, which become British protectorates.
May 31 » The National Negro Committee, forerunner to the National Association for the Advancement of Colored People (NAACP), convenes for the first time.
June 26 » The Science Museum in London comes into existence as an independent entity.
October 26 » An Jung-geun assassinates Japan's Resident-General of Korea.
December 14 » New South Wales Premier Charles Wade signs the Seat of Government Surrender Act 1909, formally completing the transfer of State land to the Commonwealth to create the Australian Capital Territory.
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
January 3 » The Hamilton Watch Company introduces the first electric watch.
May 1 » Thirty-four people are killed when a Vickers Viking airliner crashes in Hampshire, England.
June 21 » Ellen Fairclough is sworn in as Canada's first female Cabinet Minister.
July 25 » The Tunisian King Muhammad VIII al-Amin is replaced by President Habib Bourguiba.
July 26 » Carlos Castillo Armas, dictator of Guatemala, is assassinated.
November 1 » The Mackinac Bridge, the world's longest suspension bridge between anchorages at the time, opens to traffic connecting Michigan's upper and lower peninsulas.
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 14, 2026), "Sjoerd van der Zwaag (1884-1957)".
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