January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
February 7 » Second Boer War: British troops fail in their third attempt to lift the Siege of Ladysmith.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death May 13, 1991
The temperature on May 13, 1991 was between 5.6 °C and 16.1 °C and averaged 12.0 °C. There was 2.9 mm of rain during 3.0 hours. There was 0.1 hours of sunshine (1%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
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/I137157.php : accessed October 12, 2026), "Trijntje de Jong (1900-1991)".
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