adl:dates
The adl:dates bucket may contain any dates or date ranges (beginning and ending date) associated with the object; such as its date of creation or period of validity. Date ranges are specified by pairs of beginning and ending dates, formatted as SQL-92 TIMESTAMPs.
The adl:dates range bucket may be thought of as the temporal analog of the adl:geographic location bucket (that is, date ranges are "time footprints").Searches against the adl:dates range bucket may likewise specify overlap or containment, although the mechanism is somewhat different. Instead of specifying a target "time footprint," a date range search is specified in terms of "on or before" a beginning date, and/or "on or after" an ending date.