<P> Another simple way to remember which way to apply the correction for Continental USA is: </P> <Ul> <Li> For locations east of the agonic line (zero declination), roughly east of the Mississippi: The magnetic bearing is always bigger . </Li> <Li> For locations west of the agonic line (zero declination), roughly west of the Mississippi: The magnetic bearing is always smaller . </Li> </Ul> <Li> For locations east of the agonic line (zero declination), roughly east of the Mississippi: The magnetic bearing is always bigger . </Li> <Li> For locations west of the agonic line (zero declination), roughly west of the Mississippi: The magnetic bearing is always smaller . </Li>

Why is there a difference between true north and magnetic north