January 30 » The first Anglo-Japanese Alliance is signed in London.
April 2 » "Electric Theatre", the first full-time movie theater in the United States, opens in Los Angeles.
April 20 » Pierre and Marie Curie refine radium chloride.
May 31 » Second Boer War: The Treaty of Vereeniging ends the war and ensures British control of South Africa.
July 17 » Willis Carrier creates the first air conditioner in Buffalo, New York.
August 22 » Theodore Roosevelt becomes the first President of the United States to make a public appearance in an automobile.
Day of death December 12, 1981
The temperature on December 12, 1981 was between -7.3 °C and 0.6 °C and averaged -4.0 °C. There was 1.3 mm of rain during 0.6 hours. There was 3.0 hours of sunshine (38%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the southwest. 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.
April 14 » STS-1: The first operational Space Shuttle, Columbia completes its first test flight.
May 24 » Ecuadorian president Jaime Roldós Aguilera, his wife, and his presidential committee die in an aircraft accident while travelling from Quito to Zapotillo minutes after the president gave a famous speech regarding the 24 de mayo anniversary of the Battle of Pichincha.
May 26 » An EA-6B Prowler crashes on the flight deck of the aircraft carrier USSNimitz, killing 14 crewmen and injuring 45 others.
June 11 » A magnitude 6.9 earthquake at Golbaf, Iran, kills at least 2,000.
August 5 » President Ronald Reagan fires 11,359 striking air-traffic controllers who ignored his order for them to return to work.
September 26 » Nolan Ryan sets a Major League record by throwing his fifth no-hitter.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I15652.php : accessed January 19, 2026), "Pieter Lambertus Wijman (1902-1981)".
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