January 30 » The first Anglo-Japanese Alliance is signed in London.
March 18 » Macario Sakay issues Presidential Order No. 1 of his Tagalog Republic.
April 2 » Dmitry Sipyagin, Minister of Interior of the Russian Empire, is assassinated in the Marie Palace, Saint Petersburg.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
June 24 » King Edward VII of the United Kingdom develops appendicitis, delaying his coronation.
December 10 » The opening of the reservoir of the Aswan Dam in Egypt.
Day of death July 16, 1980
The temperature on July 16, 1980 was between 9.0 °C and 15.3 °C and averaged 12.9 °C. There was 0.8 mm of rain during 0.7 hours. There was 1.1 hours of sunshine (7%). 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.
June 27 » The 'Ustica massacre': Itavia Flight 870 crashes in the sea while en route from Bologna to Palermo, Italy, killing all 81 on board.
July 8 » The inaugural 1980 State of Origin game is won by Queensland who defeat New South Wales 20–10 at Lang Park.
July 30 » Vanuatu gains independence.
August 1 » Vigdís Finnbogadóttir is elected President of Iceland and becomes the world's first democratically elected female head of state.
October 29 » Demonstration flight of a secretly modified C-130 for an Iran hostage crisis rescue attempt ends in crash landing at Eglin Air Force Base's Duke Field, Florida leading to cancellation of Operation Credible Sport.
December 2 » Salvadoran Civil War: Four American missionaries are raped and murdered by a death squad.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I80148.php : accessed February 12, 2026), "Hidde Sikkes (1902-1980)".
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