Morilog\Jalali\jDateTime::jalaliCal PHP Method

    public static function jalaliCal($jy)
    {
        $breaks = [-61, 9, 38, 199, 426, 686, 756, 818, 1111, 1181, 1210, 1635, 2060, 2097, 2192, 2262, 2324, 2394, 2456, 3178];
        $breaksCount = count($breaks);
        $gy = $jy + 621;
        $leapJ = -14;
        $jp = $breaks[0];
        if ($jy < $jp || $jy >= $breaks[$breaksCount - 1]) {
            throw new \InvalidArgumentException('Invalid Jalali year : ' . $jy);
        }
        $jump = 0;
        for ($i = 1; $i < $breaksCount; $i += 1) {
            $jm = $breaks[$i];
            $jump = $jm - $jp;
            if ($jy < $jm) {
                break;
            }
            $leapJ = $leapJ + self::div($jump, 33) * 8 + self::div(self::mod($jump, 33), 4);
            $jp = $jm;
        }
        $n = $jy - $jp;
        $leapJ = $leapJ + self::div($n, 33) * 8 + self::div(self::mod($n, 33) + 3, 4);
        if (self::mod($jump, 33) === 4 && $jump - $n === 4) {
            $leapJ += 1;
        }
        $leapG = self::div($gy, 4) - self::div((self::div($gy, 100) + 1) * 3, 4) - 150;
        $march = 20 + $leapJ - $leapG;
        if ($jump - $n < 6) {
            $n = $n - $jump + self::div($jump + 4, 33) * 33;
        }
        $leap = self::mod(self::mod($n + 1, 33) - 1, 4);
        if ($leap === -1) {
            $leap = 4;
        }
        return ['leap' => $leap, 'gy' => $gy, 'march' => $march];
    }