DGN95 (Datum Geodesi Nasional 1995 | EPSG:4755)
Nov 5,2025

GISBox is a one-stop 3D GIS data editing, conversion and publishing platform that supports editing in multiple GIS formats such as OSGB/GEOTIFF/RVT, converting to 3DTiles/Terrain and publishing.

Introduction

DGN95 (Datum Geodesi Nasional 1995) is a geographic coordinate reference system officially adopted by the Indonesian government in 1995 and is used as the surveying and geographic information infrastructure throughout Indonesia. Its EPSG code is designated as 4755 and was designed to suit Indonesia's geographic characteristics and geodetic requirements. DGN95 is based on the international geodetic standard ITRF1992 (International Terrestrial Reference Frame 1992) and is the national standard to ensure uniformity in surveying and highly accurate location information.

Coordinate System Composition

Reference Ellipsoid: Compliant with WGS84 (World Geodetic System 1984)
Reference Origin: Geodetic observation point near Jakarta (terrestrial reference marker)
Geodetic Framework: Three-dimensional coordinate framework based on ITRF1992 (International Terrestrial Reference Frame 1992)
Implementation Technology: Network observations primarily using GPS positioning technology
Coordinate Format: Latitude/Longitude (geographic coordinate system)

Pros

Unified National Geodetic Reference System covering the entire territory of Indonesia
High International Compatibility due to alignment with the International Terrestrial Reference Frame (ITRF), enabling seamless integration with global surveying data
Excellent Compatibility with modern positioning technologies such as GPS, supporting high-precision surveying operations
Ensures Spatial Data Consistency while maintaining full adaptability for Geographic Information System (GIS) applications

Cons

Alignment Challenges: Due to its ITRF1992 foundation, compatibility issues may arise when comparing with current frameworks like ITRF2020
Crustal Movement Corrections: In regions with significant tectonic activity, periodic positional adjustments are required to account for temporal changes
Coordinate System Conversion: Special attention must be paid to EPSG code compatibility during datum transformations
Reference Point Coverage: Some areas may have inadequate implementation of ground control points

Application Scenario

DGN95 is used in various fields, including basic map development in Indonesia, surveying work in national projects, unification of GIS data, public infrastructure development, land registration, marine spatial planning, etc. It is also widely adopted as a standard in the National Geospatial Infrastructure (NSDI).