Show date as: Published on {date} at {time} | Updated on {date} at {time}

gistfile1.txt

add_filter( 'generate_post_date_output', 'tu_show_modified_date' );
function tu_show_modified_date() {
	$time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">%2$s</time>';

	if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
		$time_string = 'Updated on: <time class="updated" datetime="%3$s" itemprop="dateModified">%4$s</time>';
	}

	$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() )
	);

	// If our date is enabled, show it.
	printf( '<span class="posted-on">%1$s</span>', // WPCS: XSS ok, sanitization ok.
		sprintf( '<a href="%1$s" title="%2$s" rel="bookmark">%3$s</a>',
			esc_url( get_permalink() ),
			esc_attr( get_the_time() ),
			$time_string
		)
	);
}

Hey Tom! This is exactly what I need... however, I think you forgot about schema. Can you edit it and add the correct itemprop, etc... to it?

Thanks man.

Hey @brianleejackson - sorry I didn't see your comment!

I wonder if the above would work better? It should show the published date unless the post has been updated, at which point is shows the updated date.

Includes schema as well.

Let me know!