             ╔══════════════════════╗
             ║    DATE VALIDATION   ║
             ╚══════════════════════╝

This function  accepts a  three-part  numeric date and
transcribes  it into a string,  containing the date in
words.  This  includes  the day of the week,  which is
obtained by calling the MS-DOS  internal time and date
services.  MS-DOS is also used to check for an illegal
date and returns a null string if one is presented.
