Is there anyway to determine projection of a shapefile which doesn't have .prj file?
I am trying to re-project this shapefile to another projection, I know that it is Lat long data. I could manage to load this in GIS tools like this or QGIS
Based on DBF data, it's Auckland data. According to this link the EPSG code of New Zealand is 27120 as the picture indicates:
Also I tried to display a point of this shape in Google Maps and it worked:
But still not sure what is the projection of this shapefile? I don't think it's WGS84 because I wasn't successful to reproject it from WGS84 to EPSG:27120 which is New Zealand grid system.
If it's not WGS84 how does Google display the point successfully?
The shapefile is available here, it is small (5KB)