EPSG:3312 — CSG67 / UTM zone 21N

Projected · French Guiana - coastal area west of 54°W

Export Formats

OGC WKT

PROJCS[
    "CSG67 / UTM zone 21N",
    GEOGCS[
        "CSG67",
        DATUM[
            "Centre_Spatial_Guyanais_1967",
            SPHEROID["International 1924",6378388,297],
            TOWGS84[-186,230,110,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4623"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-57],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","3312"]
]

WKT2

PROJCRS[
    "CSG67 / UTM zone 21N",
    BASEGEOGCRS[
        "CSG67",
        DATUM[
            "Centre Spatial Guyanais 1967",
            ELLIPSOID[
                "International 1924",
                6378388,
                297,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7022]
            ],
            ID["EPSG",6623]
        ],
        ID["EPSG",4623]
    ],
    CONVERSION[
        "UTM zone 21N",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -57,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.9996,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",16021]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",3312]
]

PROJ.4

+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:3312", "+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 3312,
  "name": "CSG67 / UTM zone 21N",
  "kind": "projected",
  "area": "French Guiana - coastal area west of 54°W",
  "unit": "metre",
  "bbox": [
    4.84,
    -54.45,
    5.69,
    -54
  ],
  "proj4": "+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3312, 'EPSG', 3312, '+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["CSG67 / UTM zone 21N",GEOGCS["CSG67",DATUM["Centre_Spatial_Guyanais_1967",SPHEROID["International 1924",6378388,297],TOWGS84[-186,230,110,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4623"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-57],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3312"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=utm"
  "+zone=21"
  "+ellps=intl"
  "+towgs84=-186,230,110,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

3312=PROJCS["CSG67 / UTM zone 21N",GEOGCS["CSG67",DATUM["Centre_Spatial_Guyanais_1967",SPHEROID["International 1924",6378388,297],TOWGS84[-186,230,110,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4623"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-57],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3312"]]

Related Coordinate Systems

Available Transformations (2)

Transformations inherited from base CRS: EPSG:4623 (CSG67)

Transformation	Source → Target	Accuracy (m)
CSG67 to RGFG95 (1)	4623 → 4624	1
CSG67 to WGS 84 (1)	4623 → 4326	10

Other CRS using Centre Spatial Guyanais 1967

Frequently Asked Questions

How do I add EPSG:3312 to GeoServer?

Add the following definition to your GeoServer configuration:

3312=PROJCS["CSG67 / UTM zone 21N",GEOGCS["CSG67",DATUM["Centre_Spatial_Guyanais_1967",SPHEROID["International 1924",6378388,297],TOWGS84[-186,230,110,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4623"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-57],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3312"]]

Read the full GeoServer guide →

How do I add EPSG:3312 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3312, 'EPSG', 3312, '+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["CSG67 / UTM zone 21N",GEOGCS["CSG67",DATUM["Centre_Spatial_Guyanais_1967",SPHEROID["International 1924",6378388,297],TOWGS84[-186,230,110,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4623"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-57],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","3312"]]');

Read the full PostGIS guide →

How do I add EPSG:3312 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=utm"
  "+zone=21"
  "+ellps=intl"
  "+towgs84=-186,230,110,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:3312 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:3312", "+proj=utm +zone=21 +ellps=intl +towgs84=-186,230,110,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →