The temperature on February 19, 1887 was about 4.2 °C. There was 0.4 mm of rain. The air pressure was 12 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 85%. 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.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
November 13 » Bloody Sunday clashes in central London.
Day of marriage May 27, 1914
The temperature on May 27, 1914 was between 4.6 °C and 14.6 °C and averaged 10.0 °C. There was 0.3 mm of rain. There was 7.6 hours of sunshine (47%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north. 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.
May 17 » The Protocol of Corfu is signed, recognising full autonomy to Northern Epirus under nominal Albanian sovereignty.
August 2 » The German occupation of Luxembourg during World War I begins.
August 14 » World War I: Start of the Battle of Lorraine, an unsuccessful French offensive designed to recover the lost province of Moselle from Germany.
November 9 » SMSEmden is sunk by HMASSydney in the Battle of Cocos.
November 28 » World War I: Following a war-induced closure in July, the New York Stock Exchange re-opens for bond trading.
December 23 » World War I: Australian and New Zealand troops arrive in Cairo, Egypt.
Day of death March 5, 1959
The temperature on March 5, 1959 was between 5.7 °C and 14.0 °C and averaged 8.9 °C. There was 5.2 mm of rain during 3.5 hours. There was 5.7 hours of sunshine (51%). The partly clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
February 17 » Project Vanguard: Vanguard 2: The first weather satellite is launched to measure cloud-cover distribution.
June 14 » Disneyland Monorail System, the first daily operating monorail system in the Western Hemisphere, opens to the public in Anaheim, California.
June 26 » Swedish boxer Ingemar Johansson becomes world champion of heavy weight boxing, by defeating American Floyd Patterson on technical knockout after two minutes and three seconds in the third round at Yankee Stadium.
August 11 » Sheremetyevo International Airport, the second-largest airport in Russia, opens.
August 14 » Founding and first official meeting of the American Football League.
September 18 » Vanguard 3 is launched into Earth orbit.
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/I4234.php : accessed February 15, 2026), "Wilhelmus Keijsper (1887-1959)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.