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 the authorities considered seditious. They were not generally politically active, but the Watchtower movement was supposedly involved in the 1935 Copperbelt riots, probably incorrectly. Secondly, Africans educated by missions or abroad sought social, economic and political advancement through voluntary associations, often called "Welfare Associations". Their protests were muted until the early 1930s, and concentrated on improving African education and agriculture, with political representation a distant aspiration. However, several of the Welfare Associations on the Copperbelt were involved in the 1935 disturbances. Hut tax was gradually introduced to different areas of Northern Rhodesia between 1901 and 1913. Its introduction generally caused