John - Appreciate the response. The reason why I asked this question is specifically for operations within PostGIS that will utilize the point values and so it is pretty important that the point values are entered correctly. Your description of X representing east/west and Y representing north/south is exactly why this is such a confusing issue because an east/west coordinate value is a longitude value while north/south is a latitude value so X can't represent an longitude value representing east/west. In the example I cited, it listed the X value as -194. While that value is invalid it is supposed to represent the longitude value. In one sense, I can see X representing latitude if you see X as the horizontal plane and Y as the vertical plane because latitude rings are horizontal and longitude rings are vertical, and again, this is why this can get confusing because people will interpret things differently. Part of this confusion with X vs Y stems from some of the JavaScript mapping APIs (like Google Maps and OpenLayers) where one API will list X as a latitude and the other will list X as a longitude. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Format-of-Pioint-datatype-lat-long-or-long-lat-tp5784939p5784954.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general