January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
October 25 » The United Kingdom annexes the Transvaal.
Day of death July 20, 1981
The temperature on July 20, 1981 was between 14.4 °C and 18.9 °C and averaged 16.5 °C. There was 1.7 mm of rain during 0.8 hours. There was 0.9 hours of sunshine (6%). 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.
In The Netherlands , there was from Friday, September 11, 1981 to Saturday, May 29, 1982 the cabinet Van Agt II, with Mr. A.A.M. van Agt (CDA) as prime minister.
January 18 » Phil Smith and Phil Mayfield parachute off a Houston skyscraper, becoming the first two people to BASE jump from objects in all four categories: buildings, antennae, spans (bridges), and earth (cliffs).
April 4 » Iran–Iraq War: The Islamic Republic of Iran Air Force mounts an attack on H-3 Airbase and destroys about 50 Iraqi aircraft.
July 7 » US President Ronald Reagan appoints Sandra Day O'Connor to become the first female member of the Supreme Court of the United States.
September 25 » Belize joins the United Nations.
October 20 » Two police officers and an armored car guard are killed during an armed robbery carried out by members of the Black Liberation Army and Weather Underground.
October 21 » Andreas Papandreou becomes Prime Minister of Greece, ending an almost 50-year-long system of power dominated by conservative forces.
When copying data from this family tree, please include a reference to the origin: Olaf Andersen, "Andersen family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-andersen/I5999.php : accessed February 13, 2026), "Johannes Noordergraaf (1900-1981)".
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