An effective date or as of date is the date upon which something is considered to take effect. This may be different from the date upon which the event actually occurs or is recorded.
Famous quotes containing the words effective and/or date:
“The atomic bomb certainly is the most powerful of all weapons, but it is conclusively powerful and effective only in the hands of the nation which controls the sky.”
—Lyndon Baines Johnson (1908–1973)
“Until I was twenty-five, I had no development at all. From my twenty-fifth year I date my life. Three weeks have scarcely passed, at any time between then and now, that I have not unfolded within myself. But I feel that I am now come to the inmost leaf of the bulb, and that shortly the flower must fall to the mould.”
—Herman Melville (1819–1891)