- From: Jukka Korpela <jkorpela@cc.hut.fi>
- Date: Thu, 23 Oct 1997 09:07:31 +0300 (EET DST)
- To: www-html@w3.org, www-international@w3.org
On Wed, 22 Oct 1997, David Perrell wrote: > Chris Lilley wrote: > >and there is no difficulty in interpreting the European local form > >3 February 2004. > > Yes, but 2004-02-03 sorta better. European local form? Well, in that case "kolmantena helmikuuta kaksituhattaneljä" is a European local form, too. The notation from which 2004-02-03 is an example has rarely been used in actual practice, despite being an ISO standard approved years ago. I (as well as probably many others) had thought that the standard should be just forgotten. Well, _I_ have changed my mind, especially when reading the HTML 4.0 draft. In that draft, the datetime attribute of INS and DEL is required to be in "ISO date format", referring to ISO 8601. On the other hand, other specifications related to the Web, such as HTTP protocols, allow several date and time formats but _not_ the ISO format. One might expect to see some remark about the necessity of changing this. Notice that HTTP headers are mostly generated and processed by programs whereas INS and DEL can be and often will be written by human authors, so it is somewhat strange that in the _latter_ case one has to use a format which looks unnatural to most of us (mainly because of not being widely known and used, but anyway). There is, however, a very good reason to use the ISO format within HTML: it is language-independent (no month names), and among language-independent notations it is the only one which can reasonably be assumed to avoid ambiguity. Moreover, requiring _full_ ISO date and time format, although somewhat inconvenient to HTML authors, is necessary to resolve ambiguities arising from the fact that there are different time zones. When 3rd February begins where I live, people in the US will still be living 2nd February. Naturally, authors can use whatever format they prefer in the _text_ of their documents. It might take time before the ISO format is so widely known that it makes sense to use it in normal texts, too. But for _metainformation_ there is hardly any reason to specify any other format. Yucca, http://www.hut.fi/u/jkorpela/
Received on Thursday, 23 October 1997 02:07:50 UTC