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    EPSG reference

    EPSG:30792 — Nord Sahara 1959 / Algeria Sud

    Nord Sahara 1959 / Algeria Sud (EPSG:30792) — a Projected (metres) system on the a=6378249.145 datum, used in Algeria. Parameters, proj4, WKT, accuracy ±0.1 m, plus a fr…

    At a glance

    EPSG
    30792
    Name
    Nord Sahara 1959 / Algeria Sud
    Kind
    Projected (metres)
    Family
    Lambert Conformal Conic
    Ellipsoid
    a=6378249.145
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Algeria
    Convert from this system now

    Area of use

    West-3.85°
    South31.49°
    East9.22°
    North34.66°

    Projection parameters

    Projectionlcc
    Standard parallel 133.3
    Latitude of origin33.3
    Central meridian2.7
    Scale factor0.999625769
    False easting500135
    False northing300090
    Semi-major axis6378249.145
    Inverse flattening293.465
    Unitsm
    Helmert shift to WGS84-267.407,-47.068,446.357,-0.179423,5.577661,-1.27762,1.204866
    proj4
    +proj=lcc +lat_1=33.3 +lat_0=33.3 +lon_0=2.7 +k_0=0.999625769 +x_0=500135 +y_0=300090 +a=6378249.145 +rf=293.465 +units=m +no_defs +towgs84=-267.407,-47.068,446.357,-0.179423,5.577661,-1.27762,1.204866
    WKT (ESRI)
    PROJCS["Nord Sahara 1959 / Algeria Sud",GEOGCS["GCS_Nord Sahara 1959 / Algeria Sud",DATUM["D_Custom_6378249.145",SPHEROID["Custom_6378249.145",6378249.145,293.465],TOWGS84[-267.407,-47.068,446.357,-0.179423,5.577661,-1.27762,1.204866]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",500135],PARAMETER["False_Northing",300090],PARAMETER["Central_Meridian",2.7],PARAMETER["Standard_Parallel_1",33.3],PARAMETER["Scale_Factor",0.999625769],PARAMETER["Latitude_Of_Origin",33.3],UNIT["Meter",1],AUTHORITY["EPSG","30792"]]

    Sample conversion

    Centre of the area of use: WGS84 2.68500, 33.07500 → EPSG:30792 498803.832, 275116.887

    Values are within ±0.1 m at the test point.

    About the Lambert Conformal Conic family

    Nord Sahara 1959 / Algeria Sud uses the Lambert Conformal Conic projection — a cone-based, angle-preserving grid well suited to territories that stretch east–west, defined by one or two standard parallels. It is common for national mapping and for oil-and-gas grids across North Africa and Arabia.

    Scale is true along the standard parallel(s) and grows away from them; for precise distance work reduce ground distances to grid using the point scale factor. Confirm both standard parallels and the datum before trusting imported coordinates.

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    FAQ

    It is the coordinate system “Nord Sahara 1959 / Algeria Sud”, a Projected (metres) system in the Lambert Conformal Conic family, identified worldwide by the code EPSG:30792.

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