EPSG:CODE

NAD27(CGQ77) to NAD83 (1)

EPSG:4609 → EPSG:4269

Coordinate Reference Systems

Source CRS
EPSG:4609
NAD27(CGQ77)
Geographic 2D
Target CRS
EPSG:4269
NAD83
Geographic 2D

Remarks

Replaced by NAD27(CGQ77) to NAD83 (2) (code 1575). Uses NT method which expects longitudes positive west; EPSG GeogCRSs CGQ77 (code 4609) and NAD83 (code 4269) have longitudes positive east.

Frequently Asked Questions

What is the accuracy of the NAD27(CGQ77) to NAD83 transformation?

This transformation (EPSG:1451) has an accuracy of 1m using the NTv1 method. Area of use: Canada - Quebec.