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Yes, if you want ST_Area() on a bare geometry to return a planar area, you need to use an area-preserving CRS. GEOS is not magic, it just works in whatever units are handed to it, assuming cartesian math, so the expectation in a planar CRS if you want useful areas/lengths etc.


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Just to record a javascript adaptation taken from Movable Type Scripts function createCoord(coord, bearing, distance){ /** http://www.movable-type.co.uk/scripts/latlong.html φ is latitude, λ is longitude, θ is the bearing (clockwise from north), δ is the angular distance d/R; d being the distance travelled, R the earth’s radius* ...



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