April 15 » Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
November 7 » The People's Party is founded in Cuba.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death May 2, 1980
The temperature on May 2, 1980 was between 6.8 °C and 15.0 °C and averaged 10.7 °C. There was 12.6 hours of sunshine (84%). The almost cloudless was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. 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 21 » Iran Air Flight 291 crashes in the Alborz Mountains while on approach to Mehrabad International Airport in Tehran, Iran, killing 128 people.
March 4 » Nationalist leader Robert Mugabe wins a sweeping election victory to become Zimbabwe's first black prime minister.
May 20 » In a referendum in Quebec, the population rejects, by 60% of the vote, a government proposal to move towards independence from Canada.
July 19 » Opening of the Summer Olympics in Moscow.
September 26 » At the Oktoberfest terror attack in Munich 13 people die and 211 are injured.
September 30 » Ethernet specifications are published by Xerox working with Intel and Digital Equipment Corporation.
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/I101404.php : accessed October 9, 2026), "Johanna Dijkstra (1900-1980)".
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