February 7 » A Chinese immigrant in San Francisco falls ill to bubonic plague in the first plague epidemic in the continental United States.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
June 14 » Hawaii becomes a United States territory.
June 18 » Empress Dowager Cixi of China orders all foreigners killed, including foreign diplomats and their families.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
July 19 » The first line of the Paris Métro opens for operation.
Day of death April 13, 1981
The temperature on April 13, 1981 was between 4.2 °C and 14.8 °C and averaged 9.8 °C. There was 2.9 hours of sunshine (21%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-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.
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 28 » Ronald Reagan lifts remaining domestic petroleum price and allocation controls in the United States helping to end the 1979 energy crisis and begin the 1980s oil glut.
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.
June 13 » At the Trooping the Colour ceremony in London, a teenager, Marcus Sarjeant, fires six blank shots at Queen Elizabeth II.
August 5 » President Ronald Reagan fires 11,359 striking air-traffic controllers who ignored his order for them to return to work.
September 3 » The Convention on the Elimination of All Forms of Discrimination Against Women, an international bill of rights for women, is instituted by the United Nations.
October 9 » President François Mitterrand abolishes capital punishment in France.
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/I77546.php : accessed October 1, 2026), "Sipke van der Wal (1900-1981)".
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