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 ordinary constituencies, although all votes counted in full. Before the end of BSAC administration, Northern Rhodesian law was in conformity with the laws of England and Wales and its High Court of Northern Rhodesia was ultimately subordinate to those of the United Kingdom. This continued after 1924; all United Kingdom statutes in force on 17 August 1911 were applied to Northern Rhodesia, together with those of later years if specific to the Protectorate. Where Africans were parties before courts, Native law and customs were applied, except if they were "repugnant to natural justice or morality", or inconsistent with any other