WebToolArcKeep coordinate conventions explicit
Latitude/longitude order, hemisphere, datum and precision can all change the interpreted location. WebToolArc keeps WGS84 assumptions visible and separates conversion math from geocoding.
Verify before reuse
A formatted coordinate can look plausible while being swapped, rounded too aggressively or interpreted in the wrong system. Decode or open a map link before importing important points elsewhere.
Geohash describes a cell, not an exact point
A geohash progressively subdivides longitude and latitude ranges. More characters usually identify a smaller bounding cell, but a decoded center is only a representative point inside that cell. Two physically close locations can have very different prefixes when they lie on opposite sides of a cell boundary.
Use neighbors as grid adjacency
Neighbor calculations answer which encoded cells touch the current cell in the geohash grid; they are not a precise distance or routing calculation. Near the antimeridian or poles, coordinate wrapping and grid geometry deserve extra attention. When proximity matters, decode the coordinates and use an appropriate geographic distance method rather than treating common-prefix length as a universal measure of closeness.