contentReferenceTime

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > contentReferenceTime

The specific time described by a creative work, for works (e.g. articles, video objects etc.) that emphasise a particular moment within an Event.
Values expected to be one of these types
DateTime
Used on these types
CreativeWork

Source

https://github.com/schemaorg/schemaorg/issues/1050

Examples

Example 1
A JSON example for an Article about a particular event.
N/A
N/A
<script type="application/ld+json">
{
  "@context": "http://schema.org/",
  "@type": "Article",
  "name": "Apple announces iPhone SE",
  "description": "New iPhone announced at 11:30 in California.",
  "about": {
    "@type": "Event",
    "name": "Apple's March 21 Announcements"
  },
  "contentReferenceTime": "2016-03-21T11:30:00-07:00"
}
</script>