EPSG systems

EPSG:4267 NAD27

Geographic system in latitude and longitude, in use: North America - NAD27. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4267
NameNAD27
TypeGeographic system
Area of use North America - NAD27
North and central America: Antigua and Barbuda - onshore. Bahamas - onshore plus offshore over internal continental shelf only. Belize - onshore. British Virgin Islands - onshore. Canada onshore - Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Nunavut, Ontario, Prince Edward Island, Quebec, Saskatchewan and Yukon - plus offshore east coast. Cuba - onshore and offshore. El Salvador - onshore. Guatemala - onshore. Honduras - onshore. Panama - onshore. Puerto Rico - onshore. Mexico - onshore plus offshore east coast. Nicaragua -
Bounds W 167,65° · S 7,15° · E -47,74° · N 83,17°
Also covers Antigua & Barbuda, Bahamas, Belize, British Virgin Islands, Canada, Cuba, El Salvador, Guatemala, Honduras, Panama, Puerto Rico, Mexico, Nicaragua, United States, U.S. Virgin Islands
DatumNorth American Datum 1927
Ellipsoid Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214
Unit degree (Lat north, Lon east)
Transformation to WGS 84 NAD27 to WGS 84 (3) (EPSG:1172) — accuracy 20 m
ScopeGeodesy.

proj4 definition

+proj=longlat +a=6378206.4000000004 +rf=294.9786982139 +towgs84=-10,158,187 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4267.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — Antigua & Barbuda

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.