Set the date when you want the operation performed. Specify the month, day, and year (mm/dd/yy) or click the clock icon, using the arrows, to select the month, day, and year.
When parsing dates with an abbreviated year pattern, such as "YY", the year must be interpreted relative to some century. The parsing code provided by the Java runtime does this by adjusting dates to be within 80 years before and 20 years after the current date. For example, if the current date is June 4, 2008, the string "01/11/12" would be interpreted as January 11, 2012 while the string "05/04/64" would be interpreted as May 4, 1964.