Zambia: Polity Style: 1964-2025

24 Oct 1964	the territories comprised in Northern Rhodesia ceased to be a protectorate and became an independent republic under the name of Zambia on 30 Sep 1966, the date appointed by an act passed by the Parliament of the United Kingdom (House of Commons on 10 Jul 1964, House of Lords on 20 Jul 1964, received Royal Assent on 31 Jul 1964) (Public General Acts, 1964, Part II, pp. 1125-1131)
24 Oct 1964	Zambia is declared a sovereign republic in accordance with the Constitution of Zambia, appended as a Schedule to the Zambia Independence Order 1964, which comes into operation immediately before 24 Oct 1964 in accordance with the Zambia Independence Order 1964, made on 15 Oct 1964 (Statutory Instruments, 1964, Part III, Section 1, pp. 3643-3722)
24 Oct 1964 -	Republic of Zambia

Full title: An Act to make provision for, and in connection with, the establishment of Northern Rhodesia, under the name of Zambia, as an independent republic within the Commonwealth (may be cited as the Zambia Independence Act 1964).