public static function Fal03($t) {
    $a;

    /* Mean anomaly of the Moon (IERS Conventions 2003). */
    $a = fmod(485868.249036 +
                    $t * ( 1717915923.2178 +
                    $t * ( 31.8792 +
                    $t * ( 0.051635 +
                    $t * ( - 0.00024470 ) ) ) ), TURNAS) * DAS2R;

    return $a;
  }