While the North and South poles match the planet’s axis of spin. If you’re comparing differences in latitude, you’re looking at it as if the Earth were spinning around a vertical point between the poles, but the planet itself is tilted 23.5° compared to the solar plane. Plus we’re in an elliptical orbit, not circular, and that axis of tilt also wobbles about from the pull of not only the Sun but also the gas giants in our solar system like Saturn and Jupiter, and of course the Moon which also gives us our regular tides.

There’s a lot of factors that go into orbital mechanics. All of which result in our planet having widely varying tidal forces, distinct seasons, but still resulting in an overall stable and balanced ecosystem.