setlocale(LC_TIME, 'rus_RUS');
$date = '2013-01-01';
$utf8 = strftime("%A, %d/%m/%Y", strtotime($date));
echo"utf8 = $utf8";

utf8 = �������, 01/01/2013

$textwin1251 = iconv('windows-1251', 'UTF-8', $ut8);
echo $textwin1251;