April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
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.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
Day of death July 15, 1980
The temperature on July 15, 1980 was between 12.3 °C and 18.1 °C and averaged 14.5 °C. There was 6.7 hours of sunshine (41%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. 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.
January 25 » Mother Teresa is honored with India's highest civilian award, the Bharat Ratna.
May 17 » On the eve of presidential elections, Maoist guerrilla group Shining Path attacks a polling location in Chuschi (a town in Ayacucho), starting the Internal conflict in Peru.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
September 22 » Iraq invades Iran.
September 23 » Bob Marley plays what would be the last concert of his life in Pittsburgh, Pennsylvania.
October 17 » As part of the Holy See–United Kingdom relations a British monarch makes the first state visit to the Vatican.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I9802.php : accessed October 23, 2026), "Leopold "Leo" (Leopold "Leo") Armerotto (1897-1980)".
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