January 17 » The United States takes possession of Wake Island in the Pacific Ocean.
February 14 » Voting machines are approved by the U.S. Congress for use in federal elections.
March 6 » Bayer registers "Aspirin" as a trademark.
March 30 » German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
Day of marriage July 12, 1919
The temperature on July 12, 1919 was between 8.2 °C and 19.3 °C and averaged 13.4 °C. There was 1.2 mm of rain. There was 2.6 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the 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.
January 18 » Ignacy Jan Paderewski becomes Prime Minister of the newly independent Poland.
March 1 » March 1st Movement begins in Korea under Japanese rule.
April 16 » Mohandas Gandhi organizes a day of "prayer and fasting" in response to the killing of Indian protesters in the Jallianwala Bagh massacre by the British colonial troops three days earlier.
May 29 » Albert Einstein's theory of general relativity is tested (later confirmed) by Arthur Eddington and Andrew Claude de la Cherois Crommelin
June 28 » The Treaty of Versailles is signed, ending the state of war between Germany and the Allies of World War I.
September 18 » The Netherlands gives women the right to vote.
Day of death April 20, 1979
The temperature on April 20, 1979 was between 5.9 °C and 9.6 °C and averaged 7.9 °C. There was 7.2 mm of rain during 8.3 hours. There was 0.3 hours of sunshine (2%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
May 28 » Konstantinos Karamanlis signs the full treaty of the accession of Greece with the European Economic Community.
June 18 » SALT II is signed by the United States and the Soviet Union.
July 12 » The island nation of Kiribati becomes independent from the United Kingdom.
October 15 » Supporters of the Malta Labour Party ransack and destroy the Times of Malta building and other locations associated with the Nationalist Party.
October 17 » Mother Teresa is awarded the Nobel Peace Prize.
November 28 » Air New Zealand Flight 901, a DC-10 sightseeing flight over Antarctica, crashes into Mount Erebus, killing all 257 people on board.
When copying data from this family tree, please include a reference to the origin: Dirk Ham, "Family tree Ham en Dallinga", database, Genealogy Online (https://www.genealogieonline.nl/ham-stamboom/I3775.php : accessed January 23, 2026), "Petronella Arema (1899-1979)".
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.