Magnetic variation is the angle between what two meridians?

Magnetic variation refers to the angle between the true meridian and the magnetic meridian. The true meridian is based on the geographic North Pole, which represents true north, while the magnetic meridian is aligned with the direction of the Earth's magnetic field, pointing to magnetic north. This angle is crucial for navigation, as it allows pilots to adjust their headings when converting between compass readings and true course, ensuring accurate navigation based on the local magnetic declination.

Understanding this relationship is vital for pilots when planning their flight routes and interpreting navigational charts. Differences in these meridians can lead to navigation errors if not properly accounted for, reinforcing the importance of knowing magnetic variation in aviation.