utils/SSEphem/astrtime.cc
double utc2last (long mjd, double utc)
{
    double last = utc2gast (mjd, utc) + get_observatory_longitude() / TWOPI;
    if (last < 0.0) {
        last += 1.0;
    }
    if (last >= 1.0) {
        last -= 1.0;
    }
    return last;
}
// Local Apparent Sidereal time is just GAST plus the observer's longitude
// measured positive to the east of Greenwich.
Local Apparent Sidereal time is just GAST plus the observer's longitude
measured positive to the east of Greenwich.
Local Apparent Sidereal time is just GAST plus the observer ' s longitude measured positive to the east of Greenwich .
double utc2last (long mjd, double utc)
{
    double last = utc2gast (mjd, utc) + get_observatory_longitude() / TWOPI;
    if (last < 0.0) {
        last += 1.0;
    }
    if (last >= 1.0) {
        last -= 1.0;
    }
    return last;
}
double utc2last ( long mjd , double utc ) { double last = utc2gast ( mjd , utc ) + get_observatory_longitude ( ) / TWOPI ; if ( last < 0.0 ) { last += 1.0 ; } if ( last >= 1.0 ) { last -= 1.0 ; } return last ; }
Local Apparent Sidereal time is just GAST plus the observer's longitude
measured positive to the east of Greenwich.
Local Apparent Sidereal time is just GAST plus the observer ' s longitude measured positive to the east of Greenwich .