EPSG:3821 TWD67
Geographic system in latitude and longitude, in use: Taiwan - onshore - mainland and Penghu. Datum, ellipsoid and transformation to WGS 84 below.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:3821 |
|---|---|
| Name | TWD67 |
| Type | Geographic system |
| Area of use |
Taiwan - onshore - mainland and Penghu Taiwan, Republic of China - onshore - Taiwan Island, Penghu (Pescadores) Islands. |
| Bounds | W 119,25° · S 21,87° · E 122,06° · N 25,34° |
| Countries | Taiwan |
| Datum | Taiwan Datum 1967 |
| Ellipsoid | GRS 1967 Modified a = 6378160 m · 1/f = 298.25 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Geodesy. |
proj4 definition
+proj=longlat +ellps=aust_SA +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3821.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_TWD_1967",DATUM["D_TWD_1967",SPHEROID["GRS_1967_Truncated",6378160.0,298.25]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]Other systems — Taiwan
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.