February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
February 28 » Queen Ranavalona III, the last monarch of Madagascar, is deposed by a French military force.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
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.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
September 11 » After months of pursuit, generals of Menelik II of Ethiopia capture Gaki Sherocho, the last king of Kaffa, bringing an end to that ancient kingdom.
Day of death April 18, 1980
The temperature on April 18, 1980 was between 3.9 °C and 9.6 °C and averaged 7.5 °C. There was 1.5 mm of rain during 9.1 hours. The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. 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.
March 27 » The Norwegian oil platform Alexander L. Kielland collapses in the North Sea, killing 123 of its crew of 212.
May 13 » An F3 tornado hits Kalamazoo County, Michigan. President Jimmy Carter declares it a federal disaster area.
July 19 » Opening of the Summer Olympics in Moscow.
July 30 » Vanuatu gains independence.
August 27 » A massive bomb planted by extortionist John Birges explodes at Harvey's Resort Hotel in Stateline, Nevada after a failed disarming attempt by the FBI. Although the hotel is damaged, no one is injured.
November 12 » The NASA space probe Voyager I makes its closest approach to Saturn and takes the first images of its rings.
When copying data from this family tree, please include a reference to the origin: Paul Slits, "Family tree Slits", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-slits/I356.php : accessed February 14, 2026), "Catharina "Cato" Slits (1897-1980)".
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