Final answer:
If the geographic poles have not moved, Earth's precession, tectonic plate movement, or a reversal of Earth's magnetic field could account for perceived changes.
Step-by-step explanation:
If the poles have not moved, it is possible that the landmasses themselves have shifted due to the movement of tectonic plates. Additionally it may be that Earth's axis has experienced a slight shift, a phenomenon known as precession which involves Earth's rotational axis slowly changing direction in space.
Another type of movement to consider is the reversal of Earth's magnetic field where the magnetic north and south poles switch places an event documented in the Geomagnetic Polarity Time Scale (GPTS).