var
    J2000             = 2451545.0,              
    JulianCentury     = 36525.0,                
    JulianMillennium  = (JulianCentury * 10),  
    AstronomicalUnit  = 149597870.0,            
    TropicalYear      = 365.24219878;         



function astor(a)
{
    return a * (Math.PI / (180.0 * 3600.0));
}



function dtr(d)
{
    return (d * Math.PI) / 180.0;
}

/*  RTD  --  Radians to degrees.  */

function rtd(r)
{
    return (r * 180.0) / Math.PI;
}

/*  FIXANGLE  --  Range reduce angle in degrees.  */

function fixangle(a)
{
        return a - 360.0 * (Math.floor(a / 360.0));
}

/*  FIXANGR  --  Range reduce angle in radians.  */

function fixangr(a)
{
        return a - (2 * Math.PI) * (Math.floor(a / (2 * Math.PI)));
}

//  DSIN  --  Sine of an angle in degrees

function dsin(d)
{
    return Math.sin(dtr(d));
}

//  DCOS  --  Cosine of an angle in degrees

function dcos(d)
{
    return Math.cos(dtr(d));
}

/*  MOD  --  Modulus function which works for non-integers.  */

function mod(a, b)
{
    return a - (b * Math.floor(a / b));
}

//  AMOD  --  Modulus function which returns numerator if modulus is zero

function amod(a, b)
{
    return mod(a - 1, b) + 1;
}

/*  JHMS  --  Convert Julian time to hour, minutes, and seconds,
              returned as a three-element array.  */

function jhms(j) {
    var ij;

    j += 0.5;                 /* Astronomical to civil */
    ij = (j - Math.floor(j)) * 86400.0;
    return new Array(
                     Math.floor(ij / 3600),
                     Math.floor((ij / 60) % 60),
                     Math.floor(ij % 60));
}

//  JWDAY  --  Calculate day of week from Julian day

var Weekdays = new Array( "Sunday", "Monday", "Tuesday", "Wednesday",
                          "Thursday", "Friday", "Saturday" );

function jwday(j)
{
    return mod(Math.floor((j + 1.5)), 7);
}


var oterms = new Array (
        -4680.93,
           -1.55,
         1999.25,
          -51.38,
         -249.67,
          -39.05,
            7.12,
           27.87,
            5.79,
            2.45
);

function obliqeq(jd)
{
    var eps, u, v, i;

    v = u = (jd - J2000) / (JulianCentury * 100);

    eps = 23 + (26 / 60.0) + (21.448 / 3600.0);

    if (Math.abs(u) < 1.0) {
        for (i = 0; i < 10; i++) {
            eps += (oterms[i] / 3600.0) * v;
            v *= u;
        }
    }
    return eps;
}

/* Periodic terms for nutation in longiude (delta \Psi) and
   obliquity (delta \Epsilon) as given in table 21.A of
   Meeus, "Astronomical Algorithms", first edition. */

var nutArgMult = new Array(
     0,  0,  0,  0,  1,
    -2,  0,  0,  2,  2,
     0,  0,  0,  2,  2,
     0,  0,  0,  0,  2,
     0,  1,  0,  0,  0,
     0,  0,  1,  0,  0,
    -2,  1,  0,  2,  2,
     0,  0,  0,  2,  1,
     0,  0,  1,  2,  2,
    -2, -1,  0,  2,  2,
    -2,  0,  1,  0,  0,
    -2,  0,  0,  2,  1,
     0,  0, -1,  2,  2,
     2,  0,  0,  0,  0,
     0,  0,  1,  0,  1,
     2,  0, -1,  2,  2,
     0,  0, -1,  0,  1,
     0,  0,  1,  2,  1,
    -2,  0,  2,  0,  0,
     0,  0, -2,  2,  1,
     2,  0,  0,  2,  2,
     0,  0,  2,  2,  2,
     0,  0,  2,  0,  0,
    -2,  0,  1,  2,  2,
     0,  0,  0,  2,  0,
    -2,  0,  0,  2,  0,
     0,  0, -1,  2,  1,
     0,  2,  0,  0,  0,
     2,  0, -1,  0,  1,
    -2,  2,  0,  2,  2,
     0,  1,  0,  0,  1,
    -2,  0,  1,  0,  1,
     0, -1,  0,  0,  1,
     0,  0,  2, -2,  0,
     2,  0, -1,  2,  1,
     2,  0,  1,  2,  2,
     0,  1,  0,  2,  2,
    -2,  1,  1,  0,  0,
     0, -1,  0,  2,  2,
     2,  0,  0,  2,  1,
     2,  0,  1,  0,  0,
    -2,  0,  2,  2,  2,
    -2,  0,  1,  2,  1,
     2,  0, -2,  0,  1,
     2,  0,  0,  0,  1,
     0, -1,  1,  0,  0,
    -2, -1,  0,  2,  1,
    -2,  0,  0,  0,  1,
     0,  0,  2,  2,  1,
    -2,  0,  2,  0,  1,
    -2,  1,  0,  2,  1,
     0,  0,  1, -2,  0,
    -1,  0,  1,  0,  0,
    -2,  1,  0,  0,  0,
     1,  0,  0,  0,  0,
     0,  0,  1,  2,  0,
    -1, -1,  1,  0,  0,
     0,  1,  1,  0,  0,
     0, -1,  1,  2,  2,
     2, -1, -1,  2,  2,
     0,  0, -2,  2,  2,
     0,  0,  3,  2,  2,
     2, -1,  0,  2,  2
);

var nutArgCoeff = new Array(
    -171996,   -1742,   92095,      89,          /*  0,  0,  0,  0,  1 */
     -13187,     -16,    5736,     -31,          /* -2,  0,  0,  2,  2 */
      -2274,      -2,     977,      -5,          /*  0,  0,  0,  2,  2 */
       2062,       2,    -895,       5,          /*  0,  0,  0,  0,  2 */
       1426,     -34,      54,      -1,          /*  0,  1,  0,  0,  0 */
        712,       1,      -7,       0,          /*  0,  0,  1,  0,  0 */
       -517,      12,     224,      -6,          /* -2,  1,  0,  2,  2 */
       -386,      -4,     200,       0,          /*  0,  0,  0,  2,  1 */
       -301,       0,     129,      -1,          /*  0,  0,  1,  2,  2 */
        217,      -5,     -95,       3,          /* -2, -1,  0,  2,  2 */
       -158,       0,       0,       0,          /* -2,  0,  1,  0,  0 */
        129,       1,     -70,       0,          /* -2,  0,  0,  2,  1 */
        123,       0,     -53,       0,          /*  0,  0, -1,  2,  2 */
         63,       0,       0,       0,          /*  2,  0,  0,  0,  0 */
         63,       1,     -33,       0,          /*  0,  0,  1,  0,  1 */
        -59,       0,      26,       0,          /*  2,  0, -1,  2,  2 */
        -58,      -1,      32,       0,          /*  0,  0, -1,  0,  1 */
        -51,       0,      27,       0,          /*  0,  0,  1,  2,  1 */
         48,       0,       0,       0,          /* -2,  0,  2,  0,  0 */
         46,       0,     -24,       0,          /*  0,  0, -2,  2,  1 */
        -38,       0,      16,       0,          /*  2,  0,  0,  2,  2 */
        -31,       0,      13,       0,          /*  0,  0,  2,  2,  2 */
         29,       0,       0,       0,          /*  0,  0,  2,  0,  0 */
         29,       0,     -12,       0,          /* -2,  0,  1,  2,  2 */
         26,       0,       0,       0,          /*  0,  0,  0,  2,  0 */
        -22,       0,       0,       0,          /* -2,  0,  0,  2,  0 */
         21,       0,     -10,       0,          /*  0,  0, -1,  2,  1 */
         17,      -1,       0,       0,          /*  0,  2,  0,  0,  0 */
         16,       0,      -8,       0,          /*  2,  0, -1,  0,  1 */
        -16,       1,       7,       0,          /* -2,  2,  0,  2,  2 */
        -15,       0,       9,       0,          /*  0,  1,  0,  0,  1 */
        -13,       0,       7,       0,          /* -2,  0,  1,  0,  1 */
        -12,       0,       6,       0,          /*  0, -1,  0,  0,  1 */
         11,       0,       0,       0,          /*  0,  0,  2, -2,  0 */
        -10,       0,       5,       0,          /*  2,  0, -1,  2,  1 */
         -8,       0,       3,       0,          /*  2,  0,  1,  2,  2 */
          7,       0,      -3,       0,          /*  0,  1,  0,  2,  2 */
         -7,       0,       0,       0,          /* -2,  1,  1,  0,  0 */
         -7,       0,       3,       0,          /*  0, -1,  0,  2,  2 */
         -7,       0,       3,       0,          /*  2,  0,  0,  2,  1 */
          6,       0,       0,       0,          /*  2,  0,  1,  0,  0 */
          6,       0,      -3,       0,          /* -2,  0,  2,  2,  2 */
          6,       0,      -3,       0,          /* -2,  0,  1,  2,  1 */
         -6,       0,       3,       0,          /*  2,  0, -2,  0,  1 */
         -6,       0,       3,       0,          /*  2,  0,  0,  0,  1 */
          5,       0,       0,       0,          /*  0, -1,  1,  0,  0 */
         -5,       0,       3,       0,          /* -2, -1,  0,  2,  1 */
         -5,       0,       3,       0,          /* -2,  0,  0,  0,  1 */
         -5,       0,       3,       0,          /*  0,  0,  2,  2,  1 */
          4,       0,       0,       0,          /* -2,  0,  2,  0,  1 */
          4,       0,       0,       0,          /* -2,  1,  0,  2,  1 */
          4,       0,       0,       0,          /*  0,  0,  1, -2,  0 */
         -4,       0,       0,       0,          /* -1,  0,  1,  0,  0 */
         -4,       0,       0,       0,          /* -2,  1,  0,  0,  0 */
         -4,       0,       0,       0,          /*  1,  0,  0,  0,  0 */
          3,       0,       0,       0,          /*  0,  0,  1,  2,  0 */
         -3,       0,       0,       0,          /* -1, -1,  1,  0,  0 */
         -3,       0,       0,       0,          /*  0,  1,  1,  0,  0 */
         -3,       0,       0,       0,          /*  0, -1,  1,  2,  2 */
         -3,       0,       0,       0,          /*  2, -1, -1,  2,  2 */
         -3,       0,       0,       0,          /*  0,  0, -2,  2,  2 */
         -3,       0,       0,       0,          /*  0,  0,  3,  2,  2 */
         -3,       0,       0,       0           /*  2, -1,  0,  2,  2 */
);

/*  NUTATION  --  Calculate the nutation in longitude, deltaPsi, and
                  obliquity, deltaEpsilon for a given Julian date
                  jd.  Results are returned as a two element Array
                  giving (deltaPsi, deltaEpsilon) in degrees.  */

function nutation(jd)
{
    var deltaPsi, deltaEpsilon,
        i, j,
        t = (jd - 2451545.0) / 36525.0, t2, t3, to10,
        ta = new Array,
        dp = 0, de = 0, ang;

    t3 = t * (t2 = t * t);



    ta[0] = dtr(297.850363 + 445267.11148 * t - 0.0019142 * t2 + 
                t3 / 189474.0);
    ta[1] = dtr(357.52772 + 35999.05034 * t - 0.0001603 * t2 -
                t3 / 300000.0);
    ta[2] = dtr(134.96298 + 477198.867398 * t + 0.0086972 * t2 +
                t3 / 56250.0);
    ta[3] = dtr(93.27191 + 483202.017538 * t - 0.0036825 * t2 +
                t3 / 327270);
    ta[4] = dtr(125.04452 - 1934.136261 * t + 0.0020708 * t2 +
                t3 / 450000.0);

    /* Range reduce the angles in case the sine and cosine functions
       don't do it as accurately or quickly. */

    for (i = 0; i < 5; i++) {
        ta[i] = fixangr(ta[i]);
    }

    to10 = t / 10.0;
    for (i = 0; i < 63; i++) {
        ang = 0;
        for (j = 0; j < 5; j++) {
            if (nutArgMult[(i * 5) + j] != 0) {
                ang += nutArgMult[(i * 5) + j] * ta[j];
            }
        }
        dp += (nutArgCoeff[(i * 4) + 0] + nutArgCoeff[(i * 4) + 1] * to10) * Math.sin(ang);
        de += (nutArgCoeff[(i * 4) + 2] + nutArgCoeff[(i * 4) + 3] * to10) * Math.cos(ang);
    }

    /* Return the result, converting from ten thousandths of arc
       seconds to radians in the process. */

    deltaPsi = dp / (3600.0 * 10000.0);
    deltaEpsilon = de / (3600.0 * 10000.0);

    return new Array(deltaPsi, deltaEpsilon);
}

/*  ECLIPTOEQ  --  Convert celestial (ecliptical) longitude and
                   latitude into right ascension (in degrees) and
                   declination.  We must supply the time of the
                   conversion in order to compensate correctly for the
                   varying obliquity of the ecliptic over time.
                   The right ascension and declination are returned
                   as a two-element Array in that order.  */

function ecliptoeq(jd, Lambda, Beta)
{
    var eps, Ra, Dec;

    /* Obliquity of the ecliptic. */

    eps = dtr(obliqeq(jd));
log += "Obliquity: " + rtd(eps) + "\n";

    Ra = rtd(Math.atan2((Math.cos(eps) * Math.sin(dtr(Lambda)) -
                        (Math.tan(dtr(Beta)) * Math.sin(eps))),
                      Math.cos(dtr(Lambda))));
log += "RA = " + Ra + "\n";
    Ra = fixangle(rtd(Math.atan2((Math.cos(eps) * Math.sin(dtr(Lambda)) -
                        (Math.tan(dtr(Beta)) * Math.sin(eps))),
                      Math.cos(dtr(Lambda)))));
    Dec = rtd(Math.asin((Math.sin(eps) * Math.sin(dtr(Lambda)) * Math.cos(dtr(Beta))) +
                 (Math.sin(dtr(Beta)) * Math.cos(eps))));

    return new Array(Ra, Dec);
}


/*  DELTAT  --  Determine the difference, in seconds, between
                Dynamical time and Universal time.  */

/*  Table of observed Delta T values at the beginning of
    even numbered years from 1620 through 2002.  */

var deltaTtab = new Array(
    121, 112, 103, 95, 88, 82, 77, 72, 68, 63, 60, 56, 53, 51, 48, 46,
    44, 42, 40, 38, 35, 33, 31, 29, 26, 24, 22, 20, 18, 16, 14, 12,
    11, 10, 9, 8, 7, 7, 7, 7, 7, 7, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10,
    10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 13,
    13, 14, 14, 14, 14, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16,
    16, 16, 15, 15, 14, 13, 13.1, 12.5, 12.2, 12, 12, 12, 12, 12, 12,
    11.9, 11.6, 11, 10.2, 9.2, 8.2, 7.1, 6.2, 5.6, 5.4, 5.3, 5.4, 5.6,
    5.9, 6.2, 6.5, 6.8, 7.1, 7.3, 7.5, 7.6, 7.7, 7.3, 6.2, 5.2, 2.7,
    1.4, -1.2, -2.8, -3.8, -4.8, -5.5, -5.3, -5.6, -5.7, -5.9, -6,
    -6.3, -6.5, -6.2, -4.7, -2.8, -0.1, 2.6, 5.3, 7.7, 10.4, 13.3, 16,
    18.2, 20.2, 21.1, 22.4, 23.5, 23.8, 24.3, 24, 23.9, 23.9, 23.7,
    24, 24.3, 25.3, 26.2, 27.3, 28.2, 29.1, 30, 30.7, 31.4, 32.2,
    33.1, 34, 35, 36.5, 38.3, 40.2, 42.2, 44.5, 46.5, 48.5, 50.5,
    52.2, 53.8, 54.9, 55.8, 56.9, 58.3, 60, 61.6, 63, 65, 66.6
                         );

function deltat(year)
{
    var dt, f, i, t;

    if ((year >= 1620) && (year <= 2000)) {
        i = Math.floor((year - 1620) / 2);
        f = ((year - 1620) / 2) - i;  /* Fractional part of year */
        dt = deltaTtab[i] + ((deltaTtab[i + 1] - deltaTtab[i]) * f);
    } else {
        t = (year - 2000) / 100;
        if (year < 948) {
            dt = 2177 + (497 * t) + (44.1 * t * t);
        } else {
            dt = 102 + (102 * t) + (25.3 * t * t);
            if ((year > 2000) && (year < 2100)) {
                dt += 0.37 * (year - 2100);
            }
        }
    }
    return dt;
}



var EquinoxpTerms = new Array(
                       485, 324.96,   1934.136,
                       203, 337.23,  32964.467,
                       199, 342.08,     20.186,
                       182,  27.85, 445267.112,
                       156,  73.14,  45036.886,
                       136, 171.52,  22518.443,
                        77, 222.54,  65928.934,
                        74, 296.72,   3034.906,
                        70, 243.58,   9037.513,
                        58, 119.81,  33718.147,
                        52, 297.17,    150.678,
                        50,  21.02,   2281.226,
                        45, 247.54,  29929.562,
                        44, 325.15,  31555.956,
                        29,  60.93,   4443.417,
                        18, 155.12,  67555.328,
                        17, 288.79,   4562.452,
                        16, 198.04,  62894.029,
                        14, 199.76,  31436.921,
                        12,  95.39,  14577.848,
                        12, 287.11,  31931.756,
                        12, 320.81,  34777.259,
                         9, 227.73,   1222.114,
                         8,  15.45,  16859.074
                             );

JDE0tab1000 = new Array(
   new Array(1721139.29189, 365242.13740,  0.06134,  0.00111, -0.00071),
   new Array(1721233.25401, 365241.72562, -0.05323,  0.00907,  0.00025),
   new Array(1721325.70455, 365242.49558, -0.11677, -0.00297,  0.00074),
   new Array(1721414.39987, 365242.88257, -0.00769, -0.00933, -0.00006)
                       );

JDE0tab2000 = new Array(
   new Array(2451623.80984, 365242.37404,  0.05169, -0.00411, -0.00057),
   new Array(2451716.56767, 365241.62603,  0.00325,  0.00888, -0.00030),
   new Array(2451810.21715, 365242.01767, -0.11575,  0.00337,  0.00078),
   new Array(2451900.05952, 365242.74049, -0.06223, -0.00823,  0.00032)
                       );

function equinox(year, which)
{
    var deltaL, i, j, JDE0, JDE, JDE0tab, S, T, W, Y;

    /*  Initialise terms for mean equinox and solstices.  We
        have two sets: one for years prior to 1000 and a second
        for subsequent years.  */

    if (year < 1000) {
        JDE0tab = JDE0tab1000;
        Y = year / 1000;
    } else {
        JDE0tab = JDE0tab2000;
        Y = (year - 2000) / 1000;
    }

    JDE0 =  JDE0tab[which][0] +
           (JDE0tab[which][1] * Y) +
           (JDE0tab[which][2] * Y * Y) +
           (JDE0tab[which][3] * Y * Y * Y) +
           (JDE0tab[which][4] * Y * Y * Y * Y);

//document.debug.log.value += "JDE0 = " + JDE0 + "\n";

    T = (JDE0 - 2451545.0) / 36525;
//document.debug.log.value += "T = " + T + "\n";
    W = (35999.373 * T) - 2.47;
//document.debug.log.value += "W = " + W + "\n";
    deltaL = 1 + (0.0334 * dcos(W)) + (0.0007 * dcos(2 * W));
//document.debug.log.value += "deltaL = " + deltaL + "\n";

    //  Sum the periodic terms for time T

    S = 0;
    for (i = j = 0; i < 24; i++) {
        S += EquinoxpTerms[j] * dcos(EquinoxpTerms[j + 1] + (EquinoxpTerms[j + 2] * T));
        j += 3;
    }

//document.debug.log.value += "S = " + S + "\n";
//document.debug.log.value += "Corr = " + ((S * 0.00001) / deltaL) + "\n";

    JDE = JDE0 + ((S * 0.00001) / deltaL);

    return JDE;
}



function sunpos(jd)
{
    var T, T2, L0, M, e, C, sunLong, sunAnomaly, sunR,
        Omega, Lambda, epsilon, epsilon0, Alpha, Delta,
        AlphaApp, DeltaApp;

    T = (jd - J2000) / JulianCentury;
//document.debug.log.value += "Sunpos.  T = " + T + "\n";
    T2 = T * T;
    L0 = 280.46646 + (36000.76983 * T) + (0.0003032 * T2);
//document.debug.log.value += "L0 = " + L0 + "\n";
    L0 = fixangle(L0);
//document.debug.log.value += "L0 = " + L0 + "\n";
    M = 357.52911 + (35999.05029 * T) + (-0.0001537 * T2);
//document.debug.log.value += "M = " + M + "\n";
    M = fixangle(M);
//document.debug.log.value += "M = " + M + "\n";
    e = 0.016708634 + (-0.000042037 * T) + (-0.0000001267 * T2);
//document.debug.log.value += "e = " + e + "\n";
    C = ((1.914602 + (-0.004817 * T) + (-0.000014 * T2)) * dsin(M)) +
        ((0.019993 - (0.000101 * T)) * dsin(2 * M)) +
        (0.000289 * dsin(3 * M));
//document.debug.log.value += "C = " + C + "\n";
    sunLong = L0 + C;
//document.debug.log.value += "sunLong = " + sunLong + "\n";
    sunAnomaly = M + C;
//document.debug.log.value += "sunAnomaly = " + sunAnomaly + "\n";
    sunR = (1.000001018 * (1 - (e * e))) / (1 + (e * dcos(sunAnomaly)));
//document.debug.log.value += "sunR = " + sunR + "\n";
    Omega = 125.04 - (1934.136 * T);
//document.debug.log.value += "Omega = " + Omega + "\n";
    Lambda = sunLong + (-0.00569) + (-0.00478 * dsin(Omega));
//document.debug.log.value += "Lambda = " + Lambda + "\n";
    epsilon0 = obliqeq(jd);
//document.debug.log.value += "epsilon0 = " + epsilon0 + "\n";
    epsilon = epsilon0 + (0.00256 * dcos(Omega));
//document.debug.log.value += "epsilon = " + epsilon + "\n";
    Alpha = rtd(Math.atan2(dcos(epsilon0) * dsin(sunLong), dcos(sunLong)));
//document.debug.log.value += "Alpha = " + Alpha + "\n";
    Alpha = fixangle(Alpha);
////document.debug.log.value += "Alpha = " + Alpha + "\n";
    Delta = rtd(Math.asin(dsin(epsilon0) * dsin(sunLong)));
////document.debug.log.value += "Delta = " + Delta + "\n";
    AlphaApp = rtd(Math.atan2(dcos(epsilon) * dsin(Lambda), dcos(Lambda)));
//document.debug.log.value += "AlphaApp = " + AlphaApp + "\n";
    AlphaApp = fixangle(AlphaApp);
//document.debug.log.value += "AlphaApp = " + AlphaApp + "\n";
    DeltaApp = rtd(Math.asin(dsin(epsilon) * dsin(Lambda)));
//document.debug.log.value += "DeltaApp = " + DeltaApp + "\n";

    return new Array(                 //  Angular quantities are expressed in decimal degrees
        L0,                           //  [0] Geometric mean longitude of the Sun
        M,                            //  [1] Mean anomaly of the Sun
        e,                            //  [2] Eccentricity of the Earth's orbit
        C,                            //  [3] Sun's equation of the Centre
        sunLong,                      //  [4] Sun's true longitude
        sunAnomaly,                   //  [5] Sun's true anomaly
        sunR,                         //  [6] Sun's radius vector in AU
        Lambda,                       //  [7] Sun's apparent longitude at true equinox of the date
        Alpha,                        //  [8] Sun's true right ascension
        Delta,                        //  [9] Sun's true declination
        AlphaApp,                     // [10] Sun's apparent right ascension
        DeltaApp                      // [11] Sun's apparent declination
    );
}

/*  EQUATIONOFTIME  --  Compute equation of time for a given moment.night-skin.com
                        Returns the equation of time as a fraction of
                        a day.  */ 

function equationOfTime(jd)
{
    var alpha, deltaPsi, E, epsilon, L0, tau

    tau = (jd - J2000) / JulianMillennium;
//document.debug.log.value += "equationOfTime.  tau = " + tau + "\n";
    L0 = 280.4664567 + (360007.6982779 * tau) +
         (0.03032028 * tau * tau) +
         ((tau * tau * tau) / 49931) +
         (-((tau * tau * tau * tau) / 15300)) +
         (-((tau * tau * tau * tau * tau) / 2000000));
//document.debug.log.value += "L0 = " + L0 + "\n";
    L0 = fixangle(L0);
//document.debug.log.value += "L0 = " + L0 + "\n";
    alpha = sunpos(jd)[10];
//document.debug.log.value += "alpha = " + alpha + "\n";
    deltaPsi = nutation(jd)[0];
//document.debug.log.value += "deltaPsi = " + deltaPsi + "\n";
    epsilon = obliqeq(jd) + nutation(jd)[1];
//document.debug.log.value += "epsilon = " + epsilon + "\n";
    E = L0 + (-0.0057183) + (-alpha) + (deltaPsi * dcos(epsilon));
//document.debug.log.value += "E = " + E + "\n";
    E = E - 20.0 * (Math.floor(E / 20.0));
//document.debug.log.value += "Efixed = " + E + "\n";
    E = E / (24 * 60);
//document.debug.log.value += "Eday = " + E + "\n";

    return E;
}














<!--


//Night-Skin.com
var J0000 = 1721424.5;                // Julian date of Gregorian epoch: 0000-01-01
var J1970 = 2440587.5;                // Julian date at Unix epoch: 1970-01-01
var JMJD  = 2400000.5;                // Epoch of Modified Julian Date system
var J1900 = 2415020.5;                // Epoch (day 1) of Excel 1900 date system (PC)
var J1904 = 2416480.5;                // Epoch (day 0) of Excel 1904 date system (Mac)

var NormLeap = new Array("Normal year", " سال کبيسه ");

/*  WEEKDAY_BEFORE  --  Return Julian date of given weekday (0 = Sunday)
                        in the seven days ending on jd.  */

function weekday_before(weekday, jd)
{
    return jd - jwday(jd - weekday);
}

/*  SEARCH_WEEKDAY  --  Determine the Julian date for: 

            weekday      Day of week desired, 0 = Sunday
            jd           Julian date to begin search
            direction    1 = next weekday, -1 = last weekday
            offset       Offset from jd to begin search
*/

function search_weekday(weekday, jd, direction, offset)
{
    return weekday_before(weekday, jd + (direction * offset));
}

//  Utility weekday functions, just wrappers for search_weekday

function nearest_weekday(weekday, jd)
{
    return search_weekday(weekday, jd, 1, 3);
}

function next_weekday(weekday, jd)
{
    return search_weekday(weekday, jd, 1, 7);
}

function next_or_current_weekday(weekday, jd)
{
    return search_weekday(weekday, jd, 1, 6);
}

function previous_weekday(weekday, jd)
{
    return search_weekday(weekday, jd, -1, 1);
}

function previous_or_current_weekday(weekday, jd)
{
    return search_weekday(weekday, jd, 1, 0);
}

function TestSomething()
{
}

//  LEAP_GREGORIAN  --  Is a given year in the Gregorian calendar a leap year ?

function leap_gregorian(year)
{
    return ((year % 4) == 0) &&
            (!(((year % 100) == 0) && ((year % 400) != 0)));
}

//  GREGORIAN_TO_JD  --  Determine Julian day number from Gregorian calendar date

var GREGORIAN_EPOCH = 1721425.5;

function gregorian_to_jd(year, month, day)
{
    return (GREGORIAN_EPOCH - 1) +
           (365 * (year - 1)) +
           Math.floor((year - 1) / 4) +
           (-Math.floor((year - 1) / 100)) +
           Math.floor((year - 1) / 400) +
           Math.floor((((367 * month) - 362) / 12) +
           ((month <= 2) ? 0 :
                               (leap_gregorian(year) ? -1 : -2)
           ) +
           day);
}

//  JD_TO_GREGORIAN  --  Calculate Gregorian calendar date from Julian day

function jd_to_gregorian(jd) {
    var wjd, depoch, quadricent, dqc, cent, dcent, quad, dquad,
        yindex, dyindex, year, yearday, leapadj;

    wjd = Math.floor(jd - 0.5) + 0.5;
    depoch = wjd - GREGORIAN_EPOCH;
    quadricent = Math.floor(depoch / 146097);
    dqc = mod(depoch, 146097);
    cent = Math.floor(dqc / 36524);
    dcent = mod(dqc, 36524);
    quad = Math.floor(dcent / 1461);
    dquad = mod(dcent, 1461);
    yindex = Math.floor(dquad / 365);
    year = (quadricent * 400) + (cent * 100) + (quad * 4) + yindex;
    if (!((cent == 4) || (yindex == 4))) {
        year++;
    }
    yearday = wjd - gregorian_to_jd(year, 1, 1);
    leapadj = ((wjd < gregorian_to_jd(year, 3, 1)) ? 0
                                                  :
                  (leap_gregorian(year) ? 1 : 2)
              );
    month = Math.floor((((yearday + leapadj) * 12) + 373) / 367);
    day = (wjd - gregorian_to_jd(year, month, 1)) + 1;

    return new Array(year, month, day);
}

//  ISO_TO_JULIAN  --  Return Julian day of given ISO year, week, and day

function n_weeks(weekday, jd, nthweek)
{
    var j = 7 * nthweek;

    if (nthweek > 0) {
        j += previous_weekday(weekday, jd);
    } else {
        j += next_weekday(weekday, jd);
    }
    return j;
}

function iso_to_julian(year, week, day)
{
    return day + n_weeks(0, gregorian_to_jd(year - 1, 12, 28), week);
}

//  JD_TO_ISO  --  Return array of ISO (year, week, day) for Julian day

function jd_to_iso(jd)
{
    var year, week, day;

    year = jd_to_gregorian(jd - 3)[0];
    if (jd >= iso_to_julian(year + 1, 1, 1)) {
        year++;
    }
    week = Math.floor((jd - iso_to_julian(year, 1, 1)) / 7) + 1;
    day = jwday(jd);
    if (day == 0) {
        day = 7;
    }
    return new Array(year, week, day);
}

//  ISO_DAY_TO_JULIAN  --  Return Julian day of given ISO year, and day of year

function iso_day_to_julian(year, day)
{
    return (day - 1) + gregorian_to_jd(year, 1, 1);
}

//  JD_TO_ISO_DAY  --  Return array of ISO (year, day_of_year) for Julian day

function jd_to_iso_day(jd)
{
    var year, day;

    year = jd_to_gregorian(jd)[0];
    day = Math.floor(jd - gregorian_to_jd(year, 1, 1)) + 1;
    return new Array(year, day);
}

/*  PAD  --  Pad a string to a given length with a given fill character.  */

function pad(str, howlong, padwith) {
    var s = str.toString();

    while (s.length < howlong) {
        s = padwith + s;
    }
    return s;
}

//  LEAP_ISLAMIC  --  Is a given year a leap year in the Islamic calendar ?

function leap_islamic(year)
{
    return (((year * 11) + 14) % 30) < 11;
}

//  ISLAMIC_TO_JD  --  Determine Julian day from Islamic date

var ISLAMIC_EPOCH = 1948439.5;
var ISLAMIC_WEEKDAYS = new Array("الاحد", "الثاني",
                                 "الثالث'", "الاربع'",
                                 "الخميس", "الجمعه", "السبط");

function islamic_to_jd(year, month, day)
{
    return (day +
            Math.ceil(29.5 * (month - 1)) +
            (year - 1) * 354 +
            Math.floor((3 + (11 * year)) / 30) +
            ISLAMIC_EPOCH) - 1;
}

//  JD_TO_ISLAMIC  --  Calculate Islamic date from Julian day

function jd_to_islamic(jd)
{
    var year, month, day;

    jd = Math.floor(jd) + 0.5;
    year = Math.floor(((30 * (jd - ISLAMIC_EPOCH)) + 10646) / 10631);
    month = Math.min(12,
                Math.ceil((jd - (29 + islamic_to_jd(year, 1, 1))) / 29.5) + 1);
    day = (jd - islamic_to_jd(year, month, 1)) + 1;
    return new Array(year, month, day);
}

//  LEAP_PERSIAN  --  Is a given year a leap year in the Persian calendar ?

function leap_persian(year)
{
    return ((((((year - ((year > 0) ? 474 : 473)) % 2820) + 474) + 38) * 682) % 2816) < 682;
}

//  PERSIAN_TO_JD  --  Determine Julian day from Persian date

var PERSIAN_EPOCH = 1948320.5;
var PERSIAN_WEEKDAYS = new Array("يکشنبه", "دوشنبه",
                                 "سه شنبه", "چهارشنبه",
                                 "پنج شنبه", "جمعه", "شنبه");

function persian_to_jd(year, month, day)
{
    var epbase, epyear;

    epbase = year - ((year >= 0) ? 474 : 473);
    epyear = 474 + mod(epbase, 2820);

    return day +
            ((month <= 7) ?
                ((month - 1) * 31) :
                (((month - 1) * 30) + 6)
            ) +
            Math.floor(((epyear * 682) - 110) / 2816) +
            (epyear - 1) * 365 +
            Math.floor(epbase / 2820) * 1029983 +
            (PERSIAN_EPOCH - 1);
}

//  JD_TO_PERSIAN  --  Calculate Persian date from Julian day

function jd_to_persian(jd)
{
    var year, month, day, depoch, cycle, cyear, ycycle,
        aux1, aux2, yday;


    jd = Math.floor(jd) + 0.5;

    depoch = jd - persian_to_jd(475, 1, 1);
    cycle = Math.floor(depoch / 1029983);
    cyear = mod(depoch, 1029983);
    if (cyear == 1029982) {
        ycycle = 2820;
    } else {
        aux1 = Math.floor(cyear / 366);
        aux2 = mod(cyear, 366);
        ycycle = Math.floor(((2134 * aux1) + (2816 * aux2) + 2815) / 1028522) +
                    aux1 + 1;
    }
    year = ycycle + (2820 * cycle) + 474;
    if (year <= 0) {
        year--;
    }
    yday = (jd - persian_to_jd(year, 1, 1)) + 1;
    month = (yday <= 186) ? Math.ceil(yday / 31) : Math.ceil((yday - 6) / 30);
    day = (jd - persian_to_jd(year, month, 1)) + 1;
    return new Array(year, month, day);
}



function updateFromGregorian()
{
    var j, year, mon, mday, hour, min, sec,
        weekday, julcal, hebcal, islcal, hmindex, utime, isoweek,
        may_countcal, mayhaabcal, maytzolkincal, bahcal, frrcal,
        indcal, isoday, xgregcal;

    year = new Number(document.gregorian.year.value);
    mon = document.gregorian.month.selectedIndex;
    mday = new Number(document.gregorian.day.value);
    hour = min = sec = 0;
    hour = new Number(document.gregorian.hour.value);
    min = new Number(document.gregorian.min.value);
    sec = new Number(document.gregorian.sec.value);

    //  Update Julian day

    j = gregorian_to_jd(year, mon + 1, mday) +
           ((sec + 60 * (min + 60 * hour)) / 86400.0);

    //  Update day of week in Gregorian box

    weekday = jwday(j);
    document.gregorian.wday.value = Weekdays[weekday];

    //  Update leap year status in Gregorian box

    document.gregorian.leap.value = NormLeap[leap_gregorian(year) ? 1 : 0];

    //  Update Islamic Calendar

    
    document.islamic.year.value = islcal[0];
    document.islamic.month.selectedIndex = islcal[1] - 1;
    document.islamic.day.value = islcal[2];
    document.islamic.wday.value = "يوم " + ISLAMIC_WEEKDAYS[weekday];
    document.islamic.leap.value = NormLeap[leap_islamic(islcal[0]) ? 1 : 0];

    //  Update Persian Calendar

    perscal = jd_to_persian(j);
    document.persian.year.value = perscal[0];
    document.persian.month.selectedIndex = perscal[1] - 1;
    document.persian.day.value = perscal[2];
    document.persian.wday.value = PERSIAN_WEEKDAYS[weekday];
    document.persian.leap.value = NormLeap[leap_persian(perscal[0]) ? 1 : 0];
}

//  calcGregorian  --  Perform calculation starting with a Gregorian date

function calcGregorian()
{
    updateFromGregorian();
}

//  calcJulian  --  Perform calculation starting with a Julian date

function calcJulian()
{
    var j, date, time;

    j = new Number(document.julianday.day.value);
    date = jd_to_gregorian(j);
    time = jhms(j);
    document.gregorian.year.value = date[0];
    document.gregorian.month.selectedIndex = date[1] - 1;
    document.gregorian.day.value = date[2];
    document.gregorian.hour.value = pad(time[0], 2, " ");
    document.gregorian.min.value = pad(time[1], 2, "0");
    document.gregorian.sec.value = pad(time[2], 2, "0");
    updateFromGregorian();
}

//  setJulian  --  Set Julian date and update all calendars

function setJulian(j)
{
    document.julianday.day.value = new Number(j);
    calcJulian();
}

//  calcJulianCalendar  --  Update from Julian calendar

function calcJulianCalendar()
{
    setJulian(julian_to_jd((new Number(document.juliancalendar.year.value)),
                           document.juliancalendar.month.selectedIndex + 1,
                           (new Number(document.juliancalendar.day.value))));
}

//  calcIslamic  --  Update from Islamic calendar

function calcIslamic()
{
    setJulian(islamic_to_jd((new Number(document.islamic.year.value)),
                           document.islamic.month.selectedIndex + 1,
                           (new Number(document.islamic.day.value))));
}

//  calcPersian  --  Update from Persian calendar

function calcPersian()
{
    setJulian(persian_to_jd((new Number(document.persian.year.value)),
                           document.persian.month.selectedIndex + 1,
                           (new Number(document.persian.day.value))));
}

//  calcGregSerial  --  Update from Gregorian serial day number

function calcGregSerial()
{
    setJulian((new Number(document.gregserial.day.value)) + J0000);
}

// -->




   




   

 
     var j,  weekday, julcal, hebcal, islcal, hmindex, utime, isoweek,
        may_countcal, mayhaabcal, maytzolkincal, bahcal, frrcal,
        indcal, isoday,w,gw,sw, xgregcal,m,d,y,gm,gd,gy,sm,sy,sd,today;

today =new Date("Sat Apr 27 2024 7:55:45");

    y = today.getYear();
    if (y < 1000) {
        y += 1900;
    }
    m= today.getMonth();
     d=   today.getDate();


    

    j = gregorian_to_jd(y, m + 1, d)+
           ((20 + 60 * (20 + 60 * 3)) / 86400.0);

           

    

   weekday = jwday(j);
w = Weekdays[weekday];


 

    islcal = jd_to_islamic(j);
    gy = islcal[0];
    gm = islcal[1] ;
    gd = islcal[2];
    gw = "يوم " + ISLAMIC_WEEKDAYS[weekday];

 
perscal = jd_to_persian(j);
sy = perscal[0];
    sm = perscal[1] ;
    sd = perscal[2];    
sw = PERSIAN_WEEKDAYS[weekday];

if (sm == 1 )   {sm="فروردین"}
if (sm == 2 )   {sm="اردیبهشت"}
if (sm == 3 )   {sm="خرداد"}
if (sm == 4 )   {sm="تیر"}
if (sm == 5 )   {sm="مرداد"}
if (sm == 6 )   {sm="شهریور"}
if (sm == 7 )   {sm="مهر"}
if (sm == 8 )   {sm="آبان"}
if (sm == 9 )   {sm="آذر"}
if (sm == 10 )   {sm="دی"}
if (sm == 11 )   {sm="بهمن"}
if (sm == 12 )   {sm="اسفند"}

m=m+1;
if (m == 1 )   {m="January"}
if (m == 2 )   {m="February"}
if (m == 3 )   {m="March"}
if (m == 4 )   {m="April"}
if (m == 5 )   {m="May"}
if (m == 6 )   {m="June"}
if (m == 7 )   {m="July"}
if (m == 8 )   {m="August"}
if (m == 9 )   {m="September"}
if (m == 10 )   {m="October"}
if (m == 11 )   {m="November"}
if (m == 12 )   {m="December"}
  

if (gm == 1 )   {gm="محرم"}
if (gm == 2 )   {gm="صفر"}
if (gm == 3 )   {gm="ربیع الاول"}
if (gm == 4 )   {gm="ربیع الثانی"}
if (gm == 5 )   {gm="جمادی الاول"}
if (gm == 6 )   {gm="جمادی الثانی"}
if (gm == 7 )   {gm="رجب"}
if (gm == 8 )   {gm="شعبان"}
if (gm == 9 )   {gm="رمضان"}
if (gm == 10 )   {gm="شوال"}
if (gm == 11 )   {gm="ذی القعده"}
if (gm == 12 )   {gm="ذی الحجه"}



var title="";





document.write("<div align='center'  lang='fa' style='width:165px;height: 243px;font-family:tahoma;font-weight:;font-size:9pt;background:url(https://night-skin.com/blogcode/fal-roozaneh/fal.gif) no-repeat;border-width: 1px;border-color:#000000;border-style: solid;' ><p align='center' style='font-family: tahoma;color:#5C5454; font-size:9pt;font-weight:; '><b>"+title+"</b></p><p ></p><table align='center' style='font-family:tahoma;font-weight:;font-size:9pt;'>")
document.write("<BR><BR><BR><BR><tr><td><p align='center' style='color:#5C5454'><a target='_blank' span style='color:#5C5454; text-decoration:none' href='https://night-skin.com/product/category/%d9%81%d8%a7%d9%84-%d8%b1%d9%88%d8%b2%d8%a7%d9%86%d9%87/'><b>مشاهده فال امروز</b><BR>"+sw+" "+sd+" "+sm+" "+sy+"<BR>"+w+" "+d+" "+m+" "+y+"<BR>"+gw+" "+gd+" "+gm+" "+gy+"</a></p></td></tr>")
document.write("</table><BR><BR><BR><BR><BR><BR><BR><BR><center><a target='_blank' span style='color:#ffffff;font-size:8pt; text-decoration:none' href='https://night-skin.com/blogcode/fal-roozaneh/'>دریافت کد</span></a> | <a target='_blank' span style='color:#ffffff;font-size:8pt; text-decoration:none' href='https://night-skin.com'>نایت اسکین</span></a></center></div>")