The following adjustment must be made in functions.php:
add_filter('get_the_date', 'convert_to_time_ago', 10, 1); add_filter('the_date', 'convert_to_time_ago', 10, 1); add_filter('get_the_time', 'convert_to_time_ago', 10, 1); add_filter('the_time', 'convert_to_time_ago', 10, 1); function convert_to_time_ago($orig_time) { if ( ! is_admin() ) { global $post; $orig_time = strtotime($post->post_date); return human_time_diff($orig_time, current_time('timestamp')) . ' ' . __('ago'); } else { return $orig_time; } }