I was using the following tags in relation to the posted date of a website (blog) article:
<meta name="article-published_time" property="article:published_time" content="2019-10-21T00:00:00-0600">
<meta name="article-modified_time" property="article:modified_time" content="2019-10-22T13:47:16-0600">
The linked in post inspector near the bottom the section labeled
Metadata that we gathered about this page:
was providing the following feedback:
So then I added this tag:
<meta name="publish_date" property="og:publish_date" content="2019-10-21T00:00:00-0600">
Immediately, the post-inspector responded with:
BUT, when I removed that final tag, the post-inspector still showed the publish date. Logic would say that if that was the only tag that caused the publish date to be found, removing that final tag should make it go away. But removing it does not make it go away.
The question is - which of these tags or combination of these tags is required for LinkedIn to show the publish date (added value if you also answer the question as it pertains to Facebook).