JakePT on "Date is appearing 2 times in wordpress"

Your theme appears to add the date and time twice, once for the published date, and once for the updated date:

<time class="entry-date published" datetime="2016-07-28T14:05:38+00:00">July 28, 2016</time>
<time class="updated" datetime="2016-07-28T14:07:03+00:00">July 28, 2016</time>

While the updated date is hidden with CSS, AddThis appears to ignore this. Looking at your theme (ColorNews, it appears), the date function is pluggable. So you add this to a Child Theme, the issue should be resolved:

function coloews_published_date() { $time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time>'; if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) { $time_string .= ''; } $time_string = sprintf( $time_string, esc_attr( get_the_date( 'c' ) ), esc_html( get_the_date() ), esc_attr( get_the_modified_date( 'c' ) ), esc_html( get_the_modified_date() ) ); printf( __( '<span class="posted-on"><a href="%1$s" title="%2$s" rel="bookmark">%3$s</a></span>', 'coloews' ), esc_url( get_permalink() ), esc_attr( get_the_time() ), $time_string ); }

(This is a copy of the original function, I just removed the HTML for the updated date).