definiens: means that the Services of SFBC have correctly identified, recognized and processed four - digit year dates, and the Services have since January 1, 2000 : ( 1 ) continued to function properly with regard to dates with no errors or system interruptions ; ( 2 ) accurately performed calculations and comparisons on dates that span centuries ; ( 3 ) ; accepted and properly processed dates that could span more than 100 years ( e.g., calculating a person 's age from their birth date and the current date ) ; ( 4 ) properly sorted and sequenced dates that span centuries ; ( 5 ) recognize that February 29, 2000 is a valid date and that the Year 2000 has 366 days ; ( 6 ) prohibited use of date fields for any purpose other than to store valid dates ; ( 7 ) precluded the use of 12/31/99 or any other valid date to indicate something other than a date ( e.g., 12/31/99 in a date field means ) ; and ( 8) complied with and conform to the specifications of American National Standard ANSIX3.30 - 19865, Representation for Calendar Date and Ordinal Date for Information Interchange