I need published date both for humans and robots:
<meta property=”article:published_time” content=”2015-03-23T00:30:05+00:00″ />
What I don’t need (and what is still displayed in the html) are the following two lines of code:
<meta property=”article:modified_time” content=”2015-03-23T09:05:39+00:00″ />
<meta property=”og:updated_time” content=”2015-03-23T09:05:39+00:00″ />