Convert coordinates from Naparima 1955 (EPSG:4158) to WGS 84 (EPSG:4326) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 2 transformations between Naparima 1955 (EPSG:4158) and WGS 84 (EPSG:4326). Each applies to a specific area — pick the one whose area of use covers your data.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -0.465 | metre |
| Y-axis translation(ty) | 372.095 | metre |
| Z-axis translation(tz) | 171.736 | metre |
Derived in 1989 by ONI for Amoco.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -2 | metre |
| Y-axis translation(ty) | 374 | metre |
| Z-axis translation(tz) | 172 | metre |
DMA does not differentiate between Naparima 1955 (Trinidad) and Naparima 1972 (Tobago). Consequently for Trinidad IOGP has duplicated this transformation as Naparima 1972 to WGS 84 (3) - see code 1307.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4158", "EPSG:4326", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: Trinidad and Tobago - Trinidad - onshore
+proj=longlat +ellps=intl +no_defs +type=crsMore about EPSG:4158 →
geographic system using latitude and longitude on an ellipsoid · Area of use: World (by country)
+proj=longlat +datum=WGS84 +no_defs +type=crsMore about EPSG:4326 →