[whatwg] <time>
Andy Mabbett
andy at pigsonthewing.org.uk
Thu Mar 12 14:51:14 PDT 2009
In message <p06240841c5deeed58fb1@[17.202.35.52]>, David Singer
<singer at apple.com> writes
>At 17:53 +0100 12/03/09, Julian Reschke wrote:
>>Geoffrey Sneddon wrote:
>>>...
>>>Ultimately, why is the Gregorian calendar good enough for the ISO but
>>>not us? I'm sure plenty of arguments were made to the ISO before
>>>ISO8601 was published, yet that still supports only the Gregorian
>>>calendar, having been revised twice since it's original publication
>>>in 1988. Is there really any need to go beyond what ISO 8601
>>>supports?
>>>...
>>
>>Indeed.
>>
>>We aren't the subject matter experts on calendars and date formats, so
>>why do we pretend we are?
>
>I agree. As I said before, if we want a tag to express that a date is
>in a different calendar system, we are not going either to invent those
>tags or define the notation and conversion of those calendar systems
>here. We can and should rely on groups like ISO.
If we're still discussing my proposal; I have not suggested "inventing
tags" nor "defining notations", merely allowing space for others (such
as ISO) to do so. What I wrote was:
The issue of non-Gregorian (chiefly Julian) dates is a vexing
one; and has already caused problems on Wikipedia. So far as I
am aware, there is no ISO-, RFC- or similar standard for such
dates, other than converting them to Gregorian dates. It is not
the job of the HTML5 working group to solve this problem; but I
think the group should recognise that at some point a solution
must be forthcoming. One way to do so would be allow something
like:
<time schema="[schema-name]" datetime="[value]">[date in
plain text]</time>
where the schema defaults to ISO 8601 if not stated, and the
whole element is treated as simply:
[date in plain text]
if the schema is unrecognised; thereby ensuring backwards
compatibility. That way, if a hypothetical ISO- or other
standard for Julian dates emerges in the future, authors may
simply start to use it without any revision to HTML 5 being
required.
--
Andy Mabbett
Says "NO! to compulsory UK ID Cards": <http://www.no2id.net/>
and: "Free Our Data": <http://www.freeourdata.org.uk>
(both also on Facebook)
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