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datePosted

A Schema.org Property
Thing > Property :: datePosted
Publication date of an online listing.
Values expected to be one of these types
Date
DateTime
Used on these types
CDCPMDRecord
JobPosting
RealEstateListing
SpecialAnnouncement

Source

https://github.com/schemaorg/schemaorg/issues/2490

https://github.com/schemaorg/schemaorg/issues/2521