| Line of Latitude 90° from the Poles | | |
| Furthest visible point of the surface from the observer's position | | |
| How far west or east a position is | | |
| How far north or south a position is | | |
| An imaginary line stretching between the poles | | |
The point directly below the observer
| | |
| A point 90° from the Equator. The Axis of the Earth’s rotation. | | |
| The north-south line that intersects Greenwich, London | | |
| Northern Latitude 23.5° from the Equator | | |
| Southern Latitude 23.5° from the Equator | | |
| A point directly above the observer's head | | |
