ISSUE-169: Section 7, DateTime Description

Section 7, DateTime Description

State:
CLOSED
Product:
Time ontology in OWL
Raised by:
Simon Cox
Opened on:
2017-04-12
Description:
From https://www.w3.org/XML/2007/qts-timeont-comments#id64197

Limits on the values of the DateTimeDescription properties should be specified (e.g. seconds between 0 inclusive and 60 [or 61] exclusive).

XML Schema defines “2007-03-21T24:00:00-04:00” and “20070-03-22T00:00:00-04:00” as two representations of the same time. Is “24:00” hours allowed in a DateTimeDescription? What does it mean?
Related Actions Items:
No related actions
Related emails:
  1. RE: OWL-Time - ISSUE-169: Section 7, DateTime Description (from chris.little@metoffice.gov.uk on 2017-04-13)
  2. OWL-Time - ISSUE-169: Section 7, DateTime Description (from Simon.Cox@csiro.au on 2017-04-12)

Related notes:

Proposed disposition from email 2017-04-12

The valid values for the fields – including bounds - in a compact DateTime, and also gDay, gMonth and gYear are specified through a lexical pattern in the XML Schema specification – see

https://www.w3.org/TR/xmlschema11-2/#nt-dateTimeRep

https://www.w3.org/TR/xmlschema11-2/#nt-gDayRep

https://www.w3.org/TR/xmlschema11-2/#nt-gMonthRep

https://www.w3.org/TR/xmlschema11-2/#nt-gYearRep


xsd:dateTime and xsd:dateTimeStamp are built in to OWL2, and most OWL processors enforce this directly.

No need to say anything in the OWL-Time document (though added hyperlinks to the relevant position in the XSD Datatypes spec).

Simon Cox, 21 Apr 2017, 02:29:10

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