May76v20.gsb
Parameter file is from NAD27(76) to NAD83 (1) (code 1463) assuming that NAD83 is equivalent to WGS 84 within the accuracy of the transformation.
OGP
2021-09-10
metre
North American Datum 1927 (1976)
EPSG
Surveys and Mapping Section; Ontario Ministry of Transportation.
2000-03-07
Engineering survey, topographic mapping.
Canada - Ontario - east of 75°W.
Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
-513178.34 5521810.41
-1332166.31 4614652.7
252977.17 6518790.69
-95.16 41.67
-74.35 56.9
Definition: OGC Well Known Text
PROJCS["NAD27(76) / MTM zone 8", GEOGCS["NAD27(76)", DATUM["North_American_Datum_1927_1976", SPHEROID["Clarke 1866",6378206.4,294.978698213898], EXTENSION["PROJ4_GRIDS","May76v20.gsb"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4608"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",-73.5], PARAMETER["scale_factor",0.9999], PARAMETER["false_easting",304800], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","2017"]]
Definition: OGC Well Known Text 2 (2019)
PROJCRS["NAD27(76) / MTM zone 8", BASEGEOGCRS["NAD27(76)", DATUM["North American Datum 1927 (1976)", ELLIPSOID["Clarke 1866",6378206.4,294.978698213898, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4608]], CONVERSION["MTM zone 8", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-73.5, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9999, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",304800, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Canada - Ontario - east of 75°W."], BBOX[44.98,-75,45.65,-74.35]], ID["EPSG",2017]]
Definition: ESRI Well Known Text
PROJCS["NAD_1927_DEF_1976_MTM_8", GEOGCS["GCS_NAD_1927_Definition_1976", DATUM["D_NAD_1927_Definition_1976", SPHEROID["Clarke_1866",6378206.4,294.978698213898], EXTENSION["PROJ4_GRIDS","May76v20.gsb"]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Transverse_Mercator"], PARAMETER["False_Easting",304800.0], PARAMETER["False_Northing",0.0], PARAMETER["Central_Meridian",-73.5], PARAMETER["Scale_Factor",0.9999], PARAMETER["Latitude_Of_Origin",0.0], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "ProjectedCRS", "name": "NAD27(76) / MTM zone 8", "base_crs": { "name": "NAD27(76)", "datum": { "type": "GeodeticReferenceFrame", "name": "North American Datum 1927 (1976)", "ellipsoid": { "name": "Clarke 1866", "semi_major_axis": 6378206.4, "inverse_flattening": 294.978698213898 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4608 } }, "conversion": { "name": "MTM zone 8", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -73.5, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9999, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 304800, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": "metre" } ] }, "scope": "Engineering survey, topographic mapping.", "area": "Canada - Ontario - east of 75°W.", "bbox": { "south_latitude": 44.98, "west_longitude": -75, "north_latitude": 45.65, "east_longitude": -74.35 }, "id": { "authority": "EPSG", "code": 2017 } }
Definition: GeoServer
2017=PROJCS["NAD27(76) / MTM zone 8",GEOGCS["NAD27(76)",DATUM["North_American_Datum_1927_1976",SPHEROID["Clarke 1866",6378206.4,294.978698213898],EXTENSION["PROJ4_GRIDS","May76v20.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4608"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-73.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",304800],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2017"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=tmerc +lat_0=0 +lon_0=-73.5 +k=0.9999 +x_0=304800 +y_0=0 +ellps=clrk66 +nadgrids=May76v20.gsb +units=m +no_defs +type=crs"> <Layer srs="+proj=tmerc +lat_0=0 +lon_0=-73.5 +k=0.9999 +x_0=304800 +y_0=0 +ellps=clrk66 +nadgrids=May76v20.gsb +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 2017, 'EPSG', 2017, '+proj=tmerc +lat_0=0 +lon_0=-73.5 +k=0.9999 +x_0=304800 +y_0=0 +ellps=clrk66 +nadgrids=May76v20.gsb +units=m +no_defs +type=crs', 'PROJCS["NAD27(76) / MTM zone 8",GEOGCS["NAD27(76)",DATUM["North_American_Datum_1927_1976",SPHEROID["Clarke 1866",6378206.4,294.978698213898],EXTENSION["PROJ4_GRIDS","May76v20.gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4608"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-73.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",304800],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","2017"]]');