title: Creating meta tags for Linkedin - Publish Date "not found"
body: <p>I <em>was</em> using the following tags in relation to the posted date of a website (blog) article:</p>
  
  <pre><code>&lt;meta name="article-published_time" property="article:published_time" content="2019-10-21T00:00:00-0600"&gt;
  &lt;meta name="article-modified_time" property="article:modified_time" content="2019-10-22T13:47:16-0600"&gt;
  </code></pre>
  
  <p>The <a href="https://www.linkedin.com/post-inspector/" rel="noreferrer">linked in post inspector</a> <em>near the bottom</em> the section labeled</p>
  
  <blockquote>
    <p>Metadata that we gathered about this page:</p>
  </blockquote>
  
  <p>was providing the following feedback:</p>
  
  <p><a href="https://i.stack.imgur.com/qZ5Sa.png" rel="noreferrer"><img src="https://i.stack.imgur.com/qZ5Sa.png" alt="Publish date - No publication date found"></a></p>
  
  <p>So then I added <em>this</em> tag:</p>
  
  <pre><code>&lt;meta name="publish_date" property="og:publish_date" content="2019-10-21T00:00:00-0600"&gt;
  </code></pre>
  
  <p>Immediately, the post-inspector responded with:</p>
  
  <p><a href="https://i.stack.imgur.com/ewxLr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ewxLr.png" alt="Publish date - 10/20/2019, 7:00:00 PM"></a></p>
  
  <hr>
  
  <p>BUT, when I removed that final tag, the post-inspector still showed the  publish date.  Logic would say that if that was the <em>only tag</em> 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.</p>
  
  <p>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).</p>