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
Flag of Southern Rhodesia Rhodesia for official use outside the colony and the Union Jack was the official flag internally. In 1956, Southern Rhodesia entered into a federal union with Northern Rhodesia and Nyasaland to form the Federation of Rhodesia and Nyasaland. Upon union, a blue ensign with a unified badge was adopted to replace the respective previous flags. Southern Rhodesia was represented in the federation's flag by a red lion that had previously been on their old flag. Following the collapse of the federation in 1964, Southern Rhodesia then started calling itself Rhodesia and adopted a new flag at the behest of the