April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of marriage May 17, 1921
The temperature on May 17, 1921 was between 8.4 °C and 19.3 °C and averaged 14.0 °C. There was 6.0 hours of sunshine (38%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. 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 15 » Kingdom of Romania establishes its legation in Helsinki.
February 27 » The International Working Union of Socialist Parties is founded in Vienna.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
August 3 » Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.
December 22 » Opening of Visva-Bharati College, also known as Santiniketan College, now Visva Bharati University, India.
Day of death December 6, 1970
The temperature on December 6, 1970 was between 4.7 °C and 8.8 °C and averaged 6.4 °C. There was 3.8 mm of rain during 3.0 hours. The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
March 6 » An explosion at the Weather Underground safe house in Greenwich Village kills three.
March 28 » An earthquake strikes western Turkey at about 23:05 local time, killing 1,086 and injuring 1,260.
July 31 » Black Tot Day: The last day of the officially sanctioned rum ration in the Royal Navy.
August 24 » Vietnam War protesters bomb Sterling Hall at the University of Wisconsin–Madison, leading to an international manhunt for the perpetrators.
October 26 » Muhammad Ali boxes for the first time after Ali's three-year hiatus due to draft evasion.
November 13 » Bhola cyclone: A 150-mph tropical cyclone hits the densely populated Ganges Delta region of East Pakistan (now Bangladesh), killing an estimated 500,000 people in one night.
Day of burial December 10, 1970
The temperature on December 10, 1970 was between 5.8 °C and 8.3 °C and averaged 7.2 °C. The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
April 1 » President Richard Nixon signs the Public Health Cigarette Smoking Act into law, requiring the Surgeon General's warnings on tobacco products and banning cigarette advertising on television and radio in the United States, effective 1 January 1971.
April 17 » Apollo program: The ill-fated Apollo 13 spacecraft returns to Earth safely.
July 3 » Dan-Air Flight 1903 crashes into the Les Agudes mountain in the Montseny Massif near the village of Arbúcies in Catalonia, Spain, killing all 112 people aboard.
September 5 » Jochen Rindt becomes the only driver to posthumously win the Formula One World Drivers' Championship (in 1970), after being killed in practice for the Italian Grand Prix.
September 12 » Dawson's Field hijackings: Palestinian terrorists blow up three hijacked airliners in Jordan, continuing to hold the passengers hostage in various undisclosed locations in Amman.
November 14 » Southern Airways Flight 932 crashes in the mountains near Huntington, West Virginia, killing 75, including almost all of the Marshall University football team.
When copying data from this family tree, please include a reference to the origin: Hans Middendorp, "Family Tree Family tree Kraster uit de Kalkwijk bij Sappemeer in Groningen", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kraster/I5517.php : accessed January 20, 2026), "Eppo Niemeijer (1897-1970)".
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