public static function Faf03($t) {
    $a;

    /* Mean longitude of the Moon minus that of the ascending node */
    /* (IERS Conventions 2003).                                    */
    $a = fmod(335779.526232 +
                    $t * ( 1739527262.8478 +
                    $t * ( - 12.7512 +
                    $t * ( - 0.001037 +
                    $t * ( 0.00000417 ) ) ) ), TURNAS) * DAS2R;

    return $a;
  }