The temperature on January 15, 1928 was between 2.9 °C and 8.2 °C and averaged 6.0 °C. There was 3.1 mm of rain. There was 0.9 hours of sunshine (11%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
May 3 » The Jinan incident begins with the deaths of twelve Japanese civilians by Chinese forces in Jinan, China, which leads to Japanese retaliation and the deaths of over 2,000 Chinese civilians in the following days.
June 4 » The President of the Republic of China, Zhang Zuolin, is assassinated by Japanese agents.
August 27 » The Kellogg–Briand Pact outlawing war is signed by fifteen nations. Ultimately sixty-one nations will sign it.
October 2 » The "Prelature of the Holy Cross and the Work of God", commonly known as Opus Dei, is founded.
November 12 » SSVestris sinks approximately 200 miles (320km) off Hampton Roads, Virginia, killing at least 110 passengers, mostly women and children who die after the vessel is abandoned.
Day of marriage February 21, 1947
The temperature on February 21, 1947 was between -6.9 °C and -4.1 °C and averaged -6.1 °C. There was 1.1 mm of rain during 5.5 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 25 » Thomas Goldsmith Jr. files a patent for a "Cathode Ray Tube Amusement Device", the first ever electronic game.
February 12 » Christian Dior unveils a "New Look", helping Paris regain its position as the capital of the fashion world.
March 8 » Thirteen thousand troops of the Republic of China Army arrive in Taiwan after the February 28 Incident and launch crackdowns which kill thousands of people, including many elites. This turns into a major root of the Taiwan independence movement.
March 12 » Cold War: The Truman Doctrine is proclaimed to help stem the spread of Communism.
April 1 » The only mutiny in the history of the Royal New Zealand Navy begins.
June 25 » The Diary of a Young Girl (better known as The Diary of Anne Frank) is published.
Day of death June 4, 1999
The temperature on June 4, 1999 was between 11.3 °C and 18.0 °C and averaged 14.2 °C. There was 6.7 mm of rain during 2.1 hours. There was 2.6 hours of sunshine (16%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 12 » United States President Bill Clinton is acquitted by the United States Senate in his impeachment trial.
February 24 » China Southwest Airlines Flight 4509, a Tupolev Tu-154 aircraft, crashes on approach to Wenzhou Longwan International Airport in Wenzhou, Zhejiang, China. All 61 people on board are killed.
April 1 » Nunavut is established as a Canadian territory carved out of the eastern part of the Northwest Territories.
June 9 » Kosovo War: The Federal Republic of Yugoslavia and NATO sign a peace treaty.
October 12 » Pervez Musharraf takes power in Pakistan from Nawaz Sharif through a bloodless coup.
October 22 » Maurice Papon, an official in the Vichy France government during World War II, is jailed for crimes against humanity.
When copying data from this family tree, please include a reference to the origin: Rik Plomp, "Pedigree Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plomp/I4161.php : accessed February 21, 2026), "Sylvia Marie Harthorn (1928-1999)".
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