Lars, I also use the Time Ontology http://www.w3.org/TR/owl-time/ - it handles most cases nicely and can even handle broken dates that are sometimes present in historical records (like February 31st) [1].
Rob [1] http://blog.muninn-project.org/node/57 On 2013-11-12, at 9:47 AM, Svensson, Lars wrote: > Is there a standard (recommended) datatype to use when I want to specify a > time interval (e. g. 2013-11-13--2013-11-14)? The XML Schema types [1] don't > include a time interval format (unless you want to encode it as starting time > + duration). There seems to be a way to encode it using ISO 8601, the > Wikipedia says that intervals can be expressed as 'Start and end, such as > "2007-03-01T13:00:00Z/2008-05-11T15:30:00Z"' [2], but I haven't found a > formally defined datatype to use with RDF data. > > [1] www.w3.org/TR/xmlschema-2/ > [2] http://en.wikipedia.org/wiki/ISO_8601#Time_intervals > > Thanks for any help, > > Lars