On this day in 1963, Federation of Rhodesia and Nyasaland ceased to exist. Southern Rhodesia regressed to its pre-federal colonial flag which followed the same pattern but with the traditional dark blue background.
Federation of Rhodesia and Nyasaland came to an end
31 December 1963 Zimbabwehttps://repository.up.ac.za/bitstream/handle/2263/71112/Berry_Flag_2019.pdf?sequence=1&isAllowed=y
https://www.britannica.com/place/Federation-of-Rhodesia-and-Nyasaland#ref145349