The temperature on January 20, 1911 was between -0.1 °C and 3.5 °C and averaged 2.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the west. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
April 27 » Following the resignation and death of William P. Frye, a compromise is reached to rotate the office of President pro tempore of the United States Senate.
May 23 » The New York Public Library is dedicated.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
October 13 » Prince Arthur, Duke of Connaught and Strathearn, becomes the first Governor General of Canada of royal descent.
Day of death May 11, 1980
The temperature on May 11, 1980 was between 5.9 °C and 21.0 °C and averaged 14.4 °C. There was 14.5 hours of sunshine (94%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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 7 » U.S. President Jimmy Carter authorizes legislation giving $1.5 billion in loans to bail out the Chrysler Corporation.
January 29 » The Rubik's Cube makes its international debut at the Ideal Toy Corp. in Earl's Court, London.
April 7 » During the Iran hostage crisis, the United States severs relations with Iran.
April 24 » Eight U.S. servicemen die in Operation Eagle Claw as they attempt to end the Iran hostage crisis.
September 18 » Soyuz 38 carries two cosmonauts (including one Cuban) to the Salyut 6 space station.
November 23 » The 6.9 Mw Irpinia earthquake shakes southern Italy with a maximum Mercalli intensity of X (Extreme), killing 2,483–4,900, and injuring 7,700–8,934.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I232586.php : accessed January 21, 2026), "Adrianus Alphonsus Jansens (1911-1980)".
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