I think SDO is borrowing date/time format from XSD, SDO XML representation has to follow XSD spec after all. (and the Java serialization uses the XML format too)
The SDO spec might not have covered all date/time format details, however I think you can seek references from XSD spec (Part 2: Datatypes HTTP://WWW.w3.org/TR/xmlschema-2 <http://WWW.w3.org/TR/xmlschema-2>). I don't expect there will be ambiguity about the format (including hyphens). Java 1.5 has javax.xml.datatype.XMLGregorianCalendar to deal with XSD date/time, even if we can't utilize it directly, maybe we can leverage its implementation somehow... -- Yang ZHONG
