February 6 » The Permanent Court of Arbitration, an international arbitration court at The Hague, is created when the Senate of the Netherlands ratifies an 1899 peace conference decree.
February 14 » British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.
February 27 » The British Labour Party is founded.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
December 19 » Hopetoun Blunder: The first Governor-General of Australia John Hope, 7th Earl of Hopetoun, appoints Sir William Lyne premier of the new state of New South Wales, but he is unable to persuade other colonial politicians to join his government and is forced to resign.
Day of death December 13, 1963
The temperature on December 13, 1963 was between -2.9 °C and 1.3 °C and averaged -0.3 °C. There was 2.8 hours of sunshine (36%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 13 » Coup d'état in Togo results in the assassination of president Sylvanus Olympio.
April 11 » Pope John XXIII issues Pacem in terris, the first encyclical addressed to all Christians instead of only Catholics, and which described the conditions for world peace in human terms.
July 26 » Syncom 2, the world's first geosynchronous satellite, is launched from Cape Canaveral on a Delta B booster.
July 26 » The Organisation for Economic Co-operation and Development votes to admit Japan.
August 28 » March on Washington for Jobs and Freedom: The Reverend Martin Luther King, Jr. gives his I Have a Dream speech.
December 10 » An assassination attempt on the British High Commissioner in Aden kills two people and wounds dozens more.
When copying data from this family tree, please include a reference to the origin: Alfred Groot, "Family tree Groot", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-groot/I644.php : accessed October 25, 2026), "Arjen Johannes van der Zee (1900-1963)".
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