[postgis-users] Determine if point is north of another point

[GOO Creations]

Hi all

I'm looking for a way to determine if a point P1 is (more or less) north 
of point P2. Is there any easy way of doing this.

I've thought of using the latitudes of the points, but I having problems 
constructing the query (especially since the latitudes can be positive 
and negative)

Any help will be appreciated

Peter