[whatwg] Dates and coordinates in HTML5
singer at apple.com
Tue Feb 24 12:11:56 PST 2009
At 13:59 -0500 24/02/09, WeBMartians wrote:
>It's back! It won't die! :-)
>Although it can be argued that a standard should not consider the
>work required for implementation, many of the trade-offs in
>reference to times and dates do indeed take the present state of
>code into consideration.
>One reason for not supporting BCE is a disagreement between
>historians and, say, astronomers, on how to represent the year
>immediately preceding year one. Is it year -1 (1 BCE) or year zero?
>Currently, the text states that all dates and times since the
>beginning of the common era (0001-01-01 00:00:00Z) must be
>before this epoch. However, there is no way to interrogate the
>environment as to whether or not such values can be used with
><time>. That would require much more work. Thus, the limitation of
>I'd love to see support for BCE and even for prolepsis and
>non-Gregorian calendars. ...but I do see the "no BCE" compromise as
>a workable one.
ISO 8601 is quite precise on this issue. Since these are both
machine and human-readable, why is this precision a problem?
Why would we not use ISO 6709 (Annex H, text string) as the format
Multimedia Standards, Apple Inc.
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