Index items typically have a last modified date associated with them. Queries can be constrained to items with a certain date or a range of dates. The XML representation of this constraint is:

<date op="num_op">date_string</date>

This constraint has the same comparative operator values as the number property constraint (see Property Constraints). The date_string is either a valid date value or a range of valid values, expressed as initial_date-final_date. The valid forms of data values are:

  • YYYY – A four digit year

  • YY – A two digit year, assumes 1900.

  • MM YY – Month number followed by two digit year

  • MM YYYY – Month number followed by four digit year

  • MM DD YY – Month number followed by day number followed by two digit year

  • MM DD YYYY – Month number followed by day number followed by four digit year

  • month DD YY – Month name followed by day number followed by two digit year

  • month DD YYYY – Month name followed by day number followed by four digit year

For all forms, the month, day, and year components must be separated by one of the following delimiters: space, hyphen, period, comma, slash, or backslash.