The temperature on June 20, 1888 was about 14.9 °C. The air pressure was 5 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 73%. 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.
In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
March 11 » The Great Blizzard of 1888 begins along the eastern seaboard of the United States, shutting down commerce and killing more than 400.
August 21 » The first successful adding machine in the United States is patented by William Seward Burroughs.
September 4 » George Eastman registers the trademark Kodak and receives a patent for his camera that uses roll film.
September 8 » In London, the body of Jack the Ripper's second murder victim, Annie Chapman, is found.
September 22 » The first issue of National Geographic Magazine is published.
September 30 » Jack the Ripper kills his third and fourth victims, Elizabeth Stride and Catherine Eddowes.
Day of marriage June 21, 1908
The temperature on June 21, 1908 was between 10.8 °C and 18.5 °C and averaged 14.8 °C. There was 13.5 hours of sunshine (81%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. 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.
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
April 16 » Natural Bridges National Monument is established in Utah.
May 10 » Mother's Day is observed for the first time in the United States, in Grafton, West Virginia.
June 18 » Japanese immigration to Brazil begins when 781 people arrive in Santos aboard the ship Kasato-Maru.
June 27 » A group of Vietnamese tirailleurs conducts a failed attempt to poison the entire French army's garrison in the Hanoi Citadel with the aim to make way for Hoàng Hoa Thám's rebel army to capture Hanoi.
August 8 » Wilbur Wright makes his first flight at a racecourse at Le Mans, France. It is the Wright Brothers' first public flight.
November 28 » A mine explosion in Marianna, Pennsylvania, kills 154 men, leaving only one survivor.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I7747.php : accessed March 16, 2026), "Wilhelmina Tromp (1888-????)".
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