All developed and third-party software must permit the use of date formats which explicitly specify century in all date data stored or transmitted. Examples of these standards are listed in Table 6 . Third-party products must permit formatting data with explicit century in the user interface. All developed applications using third-party products must always explicitly supply century and never rely on those products' default value for century. For any date element represented without century, the correct century is unambiguous for all manipulations involving that element.
Explicit century is preferred where practical.
In storing or transmitting date data, some applications must conform to domain-specific standards whose requirements for dates may supersede ANSI X3.30 as appropriate within the application. Examples of these standards are listed in Table 6 .