Independence Day, celebrates the independence of Tanganyika from Britain in 1961. (Tanzania)

Public holidays in Tanzania are in accordance with the Public Holidays Act, amended among others in December 1964, August 1966, July 2022, and are observed throughout the nation.

Tanganyika was a colonial territory in East Africa which was administered by the United Kingdom in various forms from 1916 until 1961. It was initially administered under military occupation. From 20 July 1922, it was formalised into a League of Nations mandate under British rule. From 1946, it was administered by the UK as a United Nations trust territory. It bordered British East Africa to the North East.

Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African Great Lakes region. It is bordered by Uganda to the northwest; Kenya to the northeast; the Indian Ocean to the east; Mozambique and Malawi to the south; Zambia to the southwest; and Rwanda, Burundi, and the Democratic Republic of the Congo to the west. According to a 2024 estimate, Tanzania has a population of around 67.5 million, making it the most populous country located entirely south of the equator.