title: The 'datePublished' property and the HTML 'lang' attribute
body: <p>I was just adding some Microdata to my page and started wondering if the <code>lang</code> attribute affects the <a href="http://schema.org/datePublished" rel="nofollow">Schema.org <code>datePublished</code> property</a>.</p>
  
  <p>I've added the following to my HTML tag:</p>
  
  <pre><code>&lt;html lang="nl"&gt;
  </code></pre>
  
  <p>When I do:</p>
  
  <pre><code>&lt;h5 itemprop="datePublished" content="2015-11-30UTC12:00:00"&gt;Nov 30th 2015 12:00am&lt;/h5&gt;
  </code></pre>
  
  <p>it's not written like we do in the Netherlands. We write it like <code>d-m-Y</code>. Do I have to write my <code>datePublished</code> property like that too? How do search engines pick that up?</p>