effective date

American  

[i-fek-tiv dayt, ee-fek-tiv] / ɪˈfɛk tɪv ˈdeɪt, iˈfɛk tɪv /

noun

1. the date at which a law, treaty, or regulation comes into effect.

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Example Sentences

See Examples For:

effective date

But on Monday, a federal district court judge in Massachusetts postponed the effective date on the grounds that—and I am paraphrasing here—the rule is mind-bendingly stupid and would create a needless, self-inflicted economic catastrophe.

From Slate ● Sep. 17, 2026

Under state law, dealers in California may continue to use up supplies of paraquat for up to two years following the effective date of their cancellation.

From Los Angeles Times ● Aug. 11, 2026

The delay in the effective date of the program hit Ford hard as it makes more vehicles in the U.S. than any other automaker.

From The Wall Street Journal ● Feb. 10, 2026

But administration officials told the company in December of a new, later effective date for the policy, leading to fewer gains from the credits than anticipated.

From BBC ● Feb. 10, 2026

If the House of Councilors is not constituted before the effective date of this Constitution, the House of Representatives shall function as the Diet until such time as the House of Councilors shall be constituted.

From The Constitution of Japan, 1946 by Japan

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