EPSG:22991 — Egypt 1907 / Blue Belt

Projected · Egypt - east of 33°E onshore

Export Formats

OGC WKT

PROJCS[
    "Egypt 1907 / Blue Belt",
    GEOGCS[
        "Egypt 1907",
        DATUM[
            "Egypt_1907",
            SPHEROID["Helmert 1906",6378200,298.3],
            TOWGS84[-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4229"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",30],
    PARAMETER["central_meridian",35],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",300000],
    PARAMETER["false_northing",1100000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","22991"]
]

WKT2

PROJCRS[
    "Egypt 1907 / Blue Belt",
    BASEGEOGCRS[
        "Egypt 1907",
        DATUM[
            "Egypt 1907",
            ELLIPSOID[
                "Helmert 1906",
                6378200,
                298.3,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7020]
            ],
            ID["EPSG",6229]
        ],
        ID["EPSG",4229]
    ],
    CONVERSION[
        "Egypt Blue Belt",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            30,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            35,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            300000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            1100000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",18071]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",22991]
]

PROJ.4

+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:22991", "+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 22991,
  "name": "Egypt 1907 / Blue Belt",
  "kind": "projected",
  "area": "Egypt - east of 33°E onshore",
  "unit": "metre",
  "bbox": [
    21.97,
    33,
    31.36,
    36.95
  ],
  "proj4": "+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +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 (22991, 'EPSG', 22991, '+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +units=m +no_defs +type=crs', 'PROJCS["Egypt 1907 / Blue Belt",GEOGCS["Egypt 1907",DATUM["Egypt_1907",SPHEROID["Helmert 1906",6378200,298.3],TOWGS84[-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4229"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",35],PARAMETER["scale_factor",1],PARAMETER["false_easting",300000],PARAMETER["false_northing",1100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","22991"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=30"
  "+lon_0=35"
  "+k=1"
  "+x_0=300000"
  "+y_0=1100000"
  "+ellps=helmert"
  "+towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

22991=PROJCS["Egypt 1907 / Blue Belt",GEOGCS["Egypt 1907",DATUM["Egypt_1907",SPHEROID["Helmert 1906",6378200,298.3],TOWGS84[-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4229"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",35],PARAMETER["scale_factor",1],PARAMETER["false_easting",300000],PARAMETER["false_northing",1100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","22991"]]

Related Coordinate Systems

Available Transformations (5)

Transformations inherited from base CRS: EPSG:4229 (Egypt 1907)

Transformation	Source → Target	Accuracy (m)
Egypt 1907 to WGS 84 (4)	4229 → 4326	1.2
Egypt 1907 to WGS 72 (1)	4229 → 4322	5
Egypt 1907 to WGS 84 (2)	4229 → 4326	6
Egypt 1907 to WGS 84 (1)	4229 → 4326	11
Egypt 1907 to WGS 84 (3) Deprecated	4229 → 4326	30

Other CRS using Egypt 1907

Frequently Asked Questions

How do I add EPSG:22991 to GeoServer?

Add the following definition to your GeoServer configuration:

22991=PROJCS["Egypt 1907 / Blue Belt",GEOGCS["Egypt 1907",DATUM["Egypt_1907",SPHEROID["Helmert 1906",6378200,298.3],TOWGS84[-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4229"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",35],PARAMETER["scale_factor",1],PARAMETER["false_easting",300000],PARAMETER["false_northing",1100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","22991"]]

Read the full GeoServer guide →

How do I add EPSG:22991 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (22991, 'EPSG', 22991, '+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +units=m +no_defs +type=crs', 'PROJCS["Egypt 1907 / Blue Belt",GEOGCS["Egypt 1907",DATUM["Egypt_1907",SPHEROID["Helmert 1906",6378200,298.3],TOWGS84[-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4229"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",30],PARAMETER["central_meridian",35],PARAMETER["scale_factor",1],PARAMETER["false_easting",300000],PARAMETER["false_northing",1100000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","22991"]]');

Read the full PostGIS guide →

How do I add EPSG:22991 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=30"
  "+lon_0=35"
  "+k=1"
  "+x_0=300000"
  "+y_0=1100000"
  "+ellps=helmert"
  "+towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:22991 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:22991", "+proj=tmerc +lat_0=30 +lon_0=35 +k=1 +x_0=300000 +y_0=1100000 +ellps=helmert +towgs84=-127.535,113.495,-12.7,1.603747,-0.153612,-5.364408,5.33745 +units=m +no_defs +type=crs");

Read the full Proj4js guide →