What is the significance of the phrase "The words “forty years” subs. for “thirty years” by the Constitution (Forty-Fifth Amendment) Act, 1980, s. 2 (w.e.f. 25-1-1980)"?
The phrase "The words “forty years” subs. for “thirty years” by the Constitution (Forty-Fifth Amendment) Act, 1980, s. 2 (w.e.f. 25-1-1980)" signifies that the phrase "forty years" replaces the previous phrase "thirty years" as a result of the Constitution (Forty-Fifth Amendment) Act, 1980. This amendment came into effect on January 25, 1980.