Before revision: The formula is: Where = Meridian Zenith Distance = True Zenith Distance = Local Hour Angle = DR Latitude = Declination Once the figure for the Meridian Zenith Distance is obtained the sum or the difference is obtained between it and the declination of the object to obtain the latitude .
After revision: The formula is: Where = Meridian Zenith Distance = True Zenith Distance = Local Hour Angle = DR Latitude = Declination Once the value of the Meridian Zenith Distance is obtained the algebraic sum of it with the declination of the object to obtain the latitude .