The temperature on August 20, 1888 was about 17.6 °C. The air pressure was 4 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 61%. 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.
January 13 » The National Geographic Society is founded in Washington, D.C.
April 3 » The first of eleven unsolved brutal murders of women committed in or near the impoverished Whitechapel district in the East End of London, occurs.
May 12 » In Southeast Asia, the North Borneo Chartered Company's territories become the British protectorate of North Borneo.
August 5 » Bertha Benz drives from Mannheim to Pforzheim and back in the first long distance automobile trip, commemorated as the Bertha Benz Memorial Route since 2008.
August 21 » The first successful adding machine in the United States is patented by William Seward Burroughs.
September 30 » Jack the Ripper kills his third and fourth victims, Elizabeth Stride and Catherine Eddowes.
Day of marriage February 3, 1917
The temperature on February 3, 1917 was between -15.2 °C and -5.7 °C and averaged -11.1 °C. There was 1.7 hours of sunshine (19%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 17 » The United States pays Denmark $25 million for the Virgin Islands.
March 4 » Jeannette Rankin of Montana becomes the first female member of the United States House of Representatives.
July 31 » World War I: The Battle of Passchendaele begins near Ypres in West Flanders, Belgium.
August 6 » World War I: Battle of Mărășești between the Romanian and German armies begins.
September 26 » World War I: The Battle of Polygon Wood begins.
December 12 » Father Edward J. Flanagan founds Boys Town as a farm village for wayward boys.
Day of death June 28, 1947
The temperature on June 28, 1947 was between 17.3 °C and 34.0 °C and averaged 26.6 °C. There was 12.5 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
February 21 » In New York City, Edwin Land demonstrates the first "instant camera", the Polaroid Land Camera, to a meeting of the Optical Society of America.
May 22 » Cold War: The Truman Doctrine goes into effect, aiding Turkey and Greece.
August 15 » India gains Independence from British rule after near 190 years of British company and crown rule, and joins the Commonwealth of Nations.
August 17 » The Radcliffe Line, the border between the Dominions of India and Pakistan, is revealed.
September 18 » The National Security Council and the Central Intelligence Agency are established in the United States by the National Security Act. It also establishes the Air Force as an equal partner of the Army and Navy.
December 6 » The Everglades National Park in Florida is dedicated.
When copying data from this family tree, please include a reference to the origin: Klaas Konjer, "Family tree Konjer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-konjer/I4712.php : accessed February 16, 2026), "Sjouke Cuperus (1888-1947)".
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