ISSUE-63: How to treat underspecified dates in DCAT?


How to treat underspecified dates in DCAT?

Raised by:
Richard Cyganiak
Opened on:
DCAT recommends that dates with unknown month or day be written as 2005-01-01. We got a Last Call comment on this:

Stasinos reminded us of his earlier proposals for handling this:
Related Actions Items:
No related actions
Related emails:
  1. ISSUE-63 (DCATfuzzyDate): How to treat underspecified dates in DCAT? (from on 2013-04-12)

Related notes:

PhilA made the excellent argument in [1] that (to paraphrase) DCAT should enable providers to specify dates to the appropriate level of precision, and that to "force" providers to use xsd:date (or indeed xsd:dateTime) potentially forces a higher level of precision on the asserted date than actually may be appropriate.

I like PhilA's suggestion that we include the following language: "rdfs:Literal using the relevant ISO 8601 Date and Time compliant string and typed using the appropriate XML Schema datatype [[XMLSCHEMA-2]]"

Are there counter-arguments?


John Erickson, 17 May 2013, 14:37:16


Fadi Maali, 30 May 2013, 14:28:13

Display change log ATOM feed

Chair, Staff Contact
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <>.
$Id: 63.html,v 1.1 2014-07-10 11:36:16 carine Exp $