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 Despite the almost unanimous African opposition to amalgamation with Southern Rhodesia, the Commission advocated it at some time in the future, However, a majority of Commission members ruled amalgamation out as an immediate possibility, because of African concerns and objections. This majority favoured an early union of Northern Rhodesia and Nyasaland into one unit which would co-operate economically with Southern Rhodesia as a possible first step to uniting all three territories later. Northern Rhodesia's white population were severely disappointed, but the outbreak of World War II fundamentally changed the economic and political situation, as Northern Rhodesian copper became a vital