gstimeInternal function
Implementation
double gstimeInternal(num jdut1) {
final tut1 = (jdut1 - 2451545.0) / 36525.0;
var temp = (-6.2e-6 * tut1 * tut1 * tut1) +
(0.093104 * tut1 * tut1) +
(((876600.0 * 3600) + 8640184.812866) * tut1) +
67310.54841; // # sec
temp =
((temp * deg2rad) / 240.0) % twoPi; // 360/86400 = 1/240, to deg, to rad
// ------------------------ check quadrants ---------------------
if (temp < 0.0) {
temp += twoPi;
}
return temp;
}