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> -----Original Message-----
> From: David Megginson [mailto:firstname.lastname@example.org]
> Sent: Sunday, May 02, 2004 20:01
> To: XML Developers List
> Subject: [xml-dev] DAFIF and date formats
> Michael Kay wrote:
> > Their site appears to have a security certificate that
> expired on 5th
> > February, or possibly 2nd May.
> If only a standards body could come up with a date format
> that people from
> all countries could understand ...
ISO TC 154 is working on a revision of ISO 8601. I have seen the current
draft and it is a big improvement over the current version of the standard.
(I don't remember at which stage of standardization the new draft is, but I
can easily find out.)
The ASN.1 group of ISO/ITU-T is adding support for date/time datatypes to
ASN.1, based on the new version of ISO 8601.
By the way, XML Schema Part 2 uses the (obsolete) version 1988 of ISO 8601
for its own date/time datatypes. I hope that the new version of XML Schema
will also adopt the new version of the standard (assuming it is finalized in
(For those who are curious: The new version of 8601 seems to be getting rid
of the "truncated representation" stuff. Things like "-month-day" without
the year seem to have disappeared.)
Here are some examples of the normal "extended format" for those who have no
clue about ISO 8601:
15.1389254435 (or 15,1389254435)
> Seriously, the DAFIF is a wonderful example of free
> information online, even
> if the Web people forget to renew their certificate, or even
> to come up with
> a domain name to associate with the IP address. If anyone is
> interested in
> a medium-size, free (as-in-beer and as-in-speech) dataset to
> convert to XML
> and test with tools, I highly recommend the DAFIFT (the tab-delimited
> version), which includes worldwide information on thousands
> of airports,
> runways, air traffic service frequencies, air routes, etc. etc.
> The U.S. government leads the world in making this kind of
> data freely
> available, however much it sticks in my Canadian throat to say so.
> Converting the tab-delimited tables to XML is fairly trivial,
> as long as you
> read the data dictionaries first.
> All the best,
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