January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
April 20 » Pierre and Marie Curie refine radium chloride.
May 17 » Greek archaeologist Valerios Stais discovers the Antikythera mechanism, an ancient mechanical analog computer.
November 21 » The Philadelphia Football Athletics defeated the Kanaweola Athletic Club of Elmira, New York, 39–0, in the first ever professional American football night game.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
December 28 » The Syracuse Athletic Club defeated the New York Philadelphians, 5–0, in the first indoor professional football game, which was held at Madison Square Garden.
Day of marriage May 14, 1921
The temperature on May 14, 1921 was between 8.5 °C and 25.0 °C and averaged 16.3 °C. There was 10.5 hours of sunshine (67%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
March 8 » Spanish Prime Minister Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
July 2 » World War I: U.S. President Warren G. Harding signs the Knox–Porter Resolution formally ending the war between the United States and Germany.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
July 27 » Researchers at the University of Toronto, led by biochemist Frederick Banting, prove that the hormone insulin regulates blood sugar.
November 14 » The Communist Party of Spain is founded, and issues the first edition of Mundo obrero.
Day of death June 21, 1997
The temperature on June 21, 1997 was between 12.8 °C and 19.4 °C and averaged 15.3 °C. There was 3.9 mm of rain during 3.4 hours. There was 3.9 hours of sunshine (23%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
January 19 » Yasser Arafat returns to Hebron after more than 30 years and joins celebrations over the handover of the last Israeli-controlled West Bank city.
March 18 » The tail of a Russian Antonov An-24 charter plane breaks off while en route to Turkey causing the plane to crash and killing all 50 people on board.
May 17 » Troops of Laurent Kabila march into Kinshasa. Zaire is officially renamed Democratic Republic of the Congo.
July 7 » The Turkish Armed Forces withdraw from northern Iraq after assisting the Kurdistan Democratic Party in the Iraqi Kurdish Civil War.
September 3 » Vietnam Airlines Flight 815 (Tupolev Tu-134) crashes on approach into Phnom Penh airport, killing 64.
November 3 » The United States imposes economic sanctions against Sudan in response to its human rights abuses of its own citizens and its material and political assistance to Islamic extremist groups across the Middle East and Eastern Africa.
When copying data from this family tree, please include a reference to the origin: P. Heres, "Family tree Eikelboom", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eikelboom/I1099522575.php : accessed February 14, 2026), "Siena Okkerse (1902-1997)".
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.