dc date refinement for sent/received

Hi SWEO-ig and RDF-interest,

for representing HTTP requests/responses in RDF 
(<http://www.w3.org/TR/HTTP-in-RDF/>) I'm looking for already 
existing/defined properties for 'sent' and 'received' date (e.g. dublin 
core date property refinements) to timestamp the requests/responses.

DCMI Metadata Terms (<http://dublincore.org/documents/dcmi-terms/>) 
lists <http://purl.org/dc/terms/dateAccepted> and 
<http://purl.org/dc/terms/dateSubmitted>. But I think they don't quite 
fit for the purpose, accepting being stronger than receiving and 
submitting not quite the same as sending.

Do you have other suggestions?
-- 
Johannes Koch
BIKA Web Compliance Center - Fraunhofer FIT
Schloss Birlinghoven, D-53757 Sankt Augustin, Germany
Phone: +49-2241-142628    Fax: +49-2241-142065