В общем нашел я файл, который отвечает за вывод даты, но как перевести его на русских ума не приложу! Кто разберется может?
while ( $blog_array->have_posts() ) : $blog_array->the_post();
if($i % $items_per_column == 1 )
$class = " first";
elseif($i % $items_per_column == 0 )
$class = " last";
else
$class = "";
$post_day = date("j", strtotime($post->post_date));
$post_month = date("F, strtotime($post->post_date));");
$post_year = date("Y", strtotime($post->post_date));
if ( has_post_thumbnail() && ! post_password_required() ) :
$post_thumbnail_id = get_post_thumbnail_id();
$image = wp_get_attachment_url( $post_thumbnail_id );
else:
$image = get_template_directory_uri()."/images/placeholders/placeholder.jpg";
endif;
$src = mr_image_resize($image, 227, 168, true, 't', false);
if( empty ( $src ) || $src == 'image_not_specified' ):
$src = get_template_directory_uri()."/images/megnor/placeholder.png";
$src = mr_image_resize($src, 227, 168, true, 't', false);
endif;
$output .= '<div class="item container '.$class.'">';
$output .= '<div class="container-inner">';
$output .= '<div class="post-image">';
$output .= '<img src="'.$src.'" title="'.get_the_title().'" alt="'.get_the_title().'" />';
$output .= '<div class="post-image-hover"></div>';
$output .= '<a href="'.$image.'" data-lightbox="example-set" class="icon zoom"></a>';
$output .= '</div>';
$output .= '<div class="post-author">';
$output .= '<div class="post-date"><i class="fa fa-clock-o"></i><div class="day">'.$post_day.'</div><div class="month">'.$post_month.'</div> <div class="year">'.$post_year. '</div></div>';