On 1 July 2015 at 21:12, Markus Krötzsch <markus(a)semantic-mediawiki.org> wrote:
ISO has no such detailed way to specify precision,
No, but there is an extension, EDTF, for this:
http://www.loc.gov/standards/datetime/pre-submission.html
with an active, low-traffic mailing list:
http://www.loc.gov/standards/datetime/listserv.html
See that list's archives for details of recent (May 2015) discussions
with ISO about formal recognition of the extension.
Disclosure: I'm a contributor to EDTF.
--
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk