I am creating points in ArcGIS 10.1 to add to a GPS so I can navigate to them in the field.
I add my points by editing an empty shapefile created in ArcCatalog. I then Add Field: Lat and Long as "Float" points. I then use the "Calculate Geometry" to add X and Y coordinates in decimal degrees. The points layer and map layer are all WGS1984.
To check the coordinates I used the "Go to XY" toolbar and the points created by this tool are always offset from the shapefile points by 20-40 m.
Does anyone know the reason for this and how it can be fixed?