Prime Minister of Rhodesia held the post until the end of Federation on 31 December 1963. When Northern Rhodesia gained independence as Zambia on 24 October 1964, Southern Rhodesia began to refer to itself simply as "Rhodesia". Prime Minister Ian Smith's government issued a Unilateral Declaration of Independence from Britain in 1965, and he remained Prime Minister when the country was declared a republic in 1970. Under the Internal Settlement in 1979, after a long period of conflict, the country became known as Zimbabwe-Rhodesia, with Abel Muzorewa as its first black Prime Minister. None of these acts were recognised internationally, and under the Lancaster
Public holidays in Rhodesia Independence Day. The penultimate Monday in October was designated Republic Day in 1970 following the adoption of a republican system of government. All of these holidays were celebrated until 1979, when Rhodesia reconstituted itself under majority rule as the unrecognised state of Zimbabwe-Rhodesia. The country's national holidays were replaced soon after with alternatives intended to be more inclusive: President's Day, Unity Day and Ancestors' Day. These were in turn superseded in April 1980, when the country became the recognised state of Zimbabwe. The modern Zimbabwean holiday calendar differs radically from that of Rhodesia, but retains every one of the traditional