Date
A date associated with an event in the life cycle of the resource.
Typically, Date will be associated with the creation or availability of the resource.
Recommended best practice for encoding the date value is defined in a profile of ISO 8601 [W3CDTF] and follows the YYYY-MM-DD format.
<META NAME="DC.Date" SCHEME="WTN8601" CONTENT="1999-02-01">