Dear Cliff,
"issued" (date of formal issuance of a resource) is a recommended qualifier for date. It seems to me, that
BW has an eye on this qualifier.
Currently DC supports two types of values for dates (in the life cycle of a resource):
points and intervals. Periodic phenomena are not captured.
This problem is not only for dc:date, but also for temporal characteristics reported in dc:coverage.
Cheers
rs
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