from::getDeadLine

static function getDeadLine($deadlineAfter)
{
	$deadlineAfter = intval($deadlineAfter);

	if ($deadlineAfter)
	{
		$deadlineAfter = $deadlineAfter / 86400; // to days
		return BitrixTasksUI::formatDateTime(strtotime(date("Y-m-d 00:00")." +".$deadlineAfter." days"));
	}

	return '';
}