The eight cells adjacent to a Geohash, one property per compass direction.
Longitude wraps, so east and west always exist. Properties that cross a pole are null.
null
The adjacent cell to the east.
The adjacent cell to the north, or null at the north pole.
The adjacent cell to the northeast, or null at the north pole.
The adjacent cell to the northwest, or null at the north pole.
The adjacent cell to the south, or null at the south pole.
The adjacent cell to the southeast, or null at the south pole.
The adjacent cell to the southwest, or null at the south pole.
The adjacent cell to the west.
Returns existing neighbors in N, NE, E, SE, S, SW, W, NW order.