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Future date testing is a software testing method in which test machine data is set to a future date for the purpose of testing the date sensitivity of an application. This method was developed as a response to the controversy surrounding the Millennium bug.
With future date testing, a computer system's clock is preset to determine potential errors or unexpected behavior. Financial and insurance institutions use this testing method to determine and verify security software results and variations.
The future date testing method was spurred by the Millennium (Y2K) bug, which many feared because at that time, programmers did not test software in this manner. After Y2K, software developers began implementing future date testing with all new software releases.