9 October 1962
The East African country Uganda gained independence from Great Britain as a parliamentary democratic monarchy with traditional kingdoms Ankole, Buganda, Bunyoro and Toro receiving federal status and a degree of autonomy. Buganda, under the leadership of Sir Edward Mutesa, was the most powerful kingdom. Milton Obote the leader of the socialist Uganda People's Congress (UPC) became the first prime minister of the newly independent Uganda. In 1963, Uganda became the Republic of Uganda, with Mutesa II as first (largely ceremonial) president.
References

Wallis, F. (2000). Nuusdagboek: feite en fratse oor 1000 jaar, Kaapstad: Human & Rousseau.