Public holidays in Rhodesia weekend". Shangani Day was replaced as a public holiday by Occupation Day in 1920, but continued to be unofficially marked thereafter. Occupation Day, held on 12 September each year, marked the anniversary of the arrival of the Pioneer Column at Fort Salisbury in 1890, and their raising of the Union Jack on the kopje overlooking the site. It was renamed Pioneers' Day in 1961. Southern Rhodesia effectively became the entirety of Rhodesia in 1964 when Northern Rhodesia became independent as Zambia. After Southern Rhodesia's colonial government unilaterally declared independence from Britain on 11 November 1965, the anniversary became celebrated as
Northern Rhodesia and Luanshya, all on what later became known as the Copperbelt and exploration in 1895 by the British South Africa Company's celebrated American scout, Frederick Russell Burnham, who led and oversaw the massive Northern Territories (BSA) Exploration Co. expedition first established for Westerners that major copper deposits existed in Central Africa. Along the Kafue River in then Northern Rhodesia, Burnham saw many similarities to copper deposits he had worked in the United States, and he encountered natives wearing copper bracelets. Later, the British South Africa Company built towns along the river and a railway to transport the copper through Mozambique.