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:
“I know no method to secure the repeal of bad or obnoxious laws so effective as their stringent execution.”
—Ulysses S. Grant (1822–1885)
“In the South, the war is what A.D. is elsewhere: they date from it.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)