public GPSRational(byte[] bytes)
{
byte[] h = new byte[8]; byte[] m = new byte[8]; byte[] s = new byte[8];
Array.Copy(bytes, 0, h, 0, 8); Array.Copy(bytes, 8, m, 0, 8); Array.Copy(bytes, 16, s, 0, 8);
_hours = new Rational(h);
_minutes = new Rational(m);
_seconds = new Rational(s);
}