EPSG.dev

NAD 1927 BLM Zone 18N (US Feet) - EPSG:4418

Detailed Extent

WKT

PROJCS["NAD_1927_BLM_Zone_18N", 
	GEOGCS["GCS_North_American_1927", 
		DATUM["D_North_American_1927", 
			SPHEROID["Clarke_1866", 6378206.4, 294.9786982]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 1640416.666666667], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", -75.0], 
	PARAMETER["Scale_Factor", 0.9996], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Foot_US", 0.3048006096012192]]

WKT2

PROJCRS["NAD_1927_BLM_Zone_18N", 
	BASEGEOGCRS["GCS_North_American_1927", 
		DATUM["D_North_American_1927", 
			ELLIPSOID["Clarke_1866", 6378206.4, 294.9786982]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 1640416.666666667, 
			LENGTHUNIT["Foot_US", 0.3048006096012192]], 
		PARAMETER["False_Northing", 0.0, 
			LENGTHUNIT["Foot_US", 0.3048006096012192]], 
		PARAMETER["Central_Meridian", -75.0], 
		PARAMETER["Scale_Factor", 0.9996], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Foot_US", 0.3048006096012192], 
	ID["EPSG", "4418"]]

Data from @esri/proj-codes

{
  "wkid": 4418,
  "latestWkid": 4418,
  "gcsWkid": 4267,
  "macro": "PE_PCS_NAD_1927_BLM_18N",
  "name": "NAD_1927_BLM_Zone_18N",
  "wkt": "PROJCS[\"NAD_1927_BLM_Zone_18N\",GEOGCS[\"GCS_North_American_1927\",DATUM[\"D_North_American_1927\",SPHEROID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",1640416.666666667],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-75.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Foot_US\",0.3048006096012192]]",
  "wkt2": "PROJCRS[\"NAD_1927_BLM_Zone_18N\",BASEGEOGCRS[\"GCS_North_American_1927\",DATUM[\"D_North_American_1927\",ELLIPSOID[\"Clarke_1866\",6378206.4,294.9786982]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",1640416.666666667,LENGTHUNIT[\"Foot_US\",0.3048006096012192]],PARAMETER[\"False_Northing\",0.0,LENGTHUNIT[\"Foot_US\",0.3048006096012192]],PARAMETER[\"Central_Meridian\",-75.0],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Foot_US\",0.3048006096012192],ID[\"EPSG\",\"4418\"]]",
  "description": "NAD 1927 BLM Zone 18N (US Feet)",
  "authority": "EPSG",
  "version": "7.4.5(10.1.0)",
  "deprecated": "no",
  "areaname": "USA - 78~W to 72~W",
  "extent": {
    "slat": 28.28,
    "nlat": 45.03,
    "llon": -78,
    "rlon": -72
  }
}