public void AddSecond()
{
JulianDate jd = new JulianDate(new DateTime(2003, 1, 1));
JulianDate jd1 = new JulianDate(jd);
jd1.AddSeconds(24);
Assert.That(jd1 - jd, Is.EqualTo(24.0 / (3600 * 24)).Within(0.00000000000001));
DateTime dt = jd1.ToDateTime();
Assert.That(dt.Second, Is.EqualTo(24));
}
