public void Get_Moon_Illumination_Returns_Fraction_And_Angle_Of_Moons_Illuminated_Limb_And_Phase() { //Arrange var date = new DateTime(2013, 3, 5, 0, 0, 0, DateTimeKind.Utc); //Act var moonIllum = SunCalc.GetMoonIllumination(date); //Assert Assert.Equal(0.4848068202456373, moonIllum.Fraction, 15); Assert.Equal(0.7548368838538762, moonIllum.Phase, 15); Assert.Equal(1.6732942678578346, moonIllum.Angle, 15); }