public void Get_Sun_Position_Returns_Azimuth_And_Altitude_For_The_Given_Time_And_Location() { //Arrange var date = new DateTime(2013, 3, 5, 0, 0, 0, DateTimeKind.Utc); var lat = 50.5; var lng = 30.5; //Act var sunPosition = SunCalc.GetSunPosition(date, lat, lng); //Assert Assert.Equal(-2.5003175907168385, sunPosition.Azimuth, 15); Assert.Equal(-0.7000406838781611, sunPosition.Altitude, 15); }