The temperature on August 18, 1885 was about 14.7 °C. The air pressure was 5 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 63%. 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 26 » Troops loyal to The Mahdi conquer Khartoum, killing the Governor-General Charles George Gordon.
April 30 » Governor of New York David B. Hill signs legislation creating the Niagara Reservation, New York's first state park, ensuring that Niagara Falls will not be devoted solely to industrial and commercial use.
July 20 » The Football Association legalizes professionalism in association football under pressure from the British Football Association.
August 14 » Japan's first patent is issued to the inventor of a rust-proof paint.
August 29 » Gottlieb Daimler patents the world's first internal combustion motorcycle, the Reitwagen.
September 12 » Arbroath 36–0 Bon Accord, a world record scoreline in professional Association football.
Day of marriage June 10, 1914
The temperature on June 10, 1914 was between 5.1 °C and 20.8 °C and averaged 13.7 °C. There was 14.1 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
April 21 » Ypiranga incident: A German arms shipment to Mexico is intercepted by the U.S. Navy near Veracruz.
July 4 » The funeral of Archduke Franz Ferdinand and his wife Sophie takes place in Vienna, six days after their assassinations in Sarajevo.
August 20 » World War I: Brussels is captured during the German invasion of Belgium.
September 8 » World War I: Private Thomas Highgate becomes the first British soldier to be executed for desertion during the war.
November 9 » SMSEmden is sunk by HMASSydney in the Battle of Cocos.
December 24 » World War I: The "Christmas truce" begins.
Day of death February 20, 1955
The temperature on February 20, 1955 was between -4.5 °C and 0.1 °C and averaged -1.8 °C. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
February 18 » Operation Teapot: Teapot test shot "Wasp" is successfully detonated at the Nevada Test Site with a yield of 1.2 kilotons. Wasp is the first of fourteen shots in the Teapot series.
April 3 » The American Civil Liberties Union announces it will defend Allen Ginsberg's book Howl against obscenity charges.
August 17 » Hurricane Diane made landfall near Wilmington, North Carolina, and it went on to cause major floods and kill more than 184 people.
October 1 » The Xinjiang Uyghur Autonomous Region is established.
October 26 » After the last Allied troops have left the country, and following the provisions of the Austrian Independence Treaty, Austria declares that it will never join a military alliance.
December 14 » Albania, Austria, Bulgaria, Cambodia, Ceylon, Finland, Hungary, Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania and Spain join the United Nations through United Nations Security Council Resolution 109.
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/I19902.php : accessed January 24, 2026), "Jacob Cornelis Koolaard (1885-1955)".
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.