13 July 1963
The government of India announced that it was cutting India's last remaining link with South Africa by refusing landing and passage facilities to South African aircraft. India was one of the first states in the struggle against apartheid.
References

Kalley, J.A.; Schoeman, E. & Andor, L.E. (eds)(1999). Southern African Political History: a chronology of key political events from independence to mid-1997, Westport: Greenwood.