Charles Wicksteed has drawn to my attention that PICS uses ISO 8601 to specify
dates + times. To be precise, PICS uses a strictly defined subset of ISO 8601.
This (a strictly defined subset of ISO 8601) is what I propose we use for DC,
though I wouldn't want to be quite as prescriptive as PICS, which insists on
the time and time zone.
See "quoted-ISO-date" in <http://www.w3.org/pub/WWW/PICS/labels.html>.
Misha
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