The date is not stored in ANY format. It's stored as a Double Float
number, a count of days and fractions of a day (times, i.e. 0.25 is
6:00am) since midnight, December 30, 1899.
To ensure that it is *displayed* in your preferred format in your
forms or reports, set the Format property of the textbox to an
explicit format, e.g. mm/dd/yyyy or dd-mmm-yyyy (rather than using
Short Date or Long Date, which obeys the regional settings).