Datum Modernisation


Modernising our National Datum

This page provides information about changes to the system that underlies Australia’s location information which is being updated to align with global satellite positioning systems. Watch the animated video below to see why and how Australia’s Datum is changing and utilise the fact sheet for explanations for a non-technical audience. 

For the latest information on Datum Modernisation​

The Intergovernmental Committee for Surveying and Mapping website has all the latest information.​ Comprehensive explanatory and techncial information about national geodetic datums GDA2020 and GDA94 is available at the ​​ICSM Geocentric Datum of Australia ​pages whilst a general overview of maps, mapping and datums is available at ICSM fundamentals of mapping pages. ​

GDA2020 Datum Animation 

Do you want to receive GDA2020 news?

Land Tasmania has an Email Notification Service to keep you up to date with the implementation of the Datum Modernisation process. Updates will be sent with news and information on relevant aspects of the implementation as they occur.

Click to subscribe to the GDA2020 Email Notification Service

Click to unsubscrice to the GDA2020 Email Notification Service

GDA2020 Online Moderated Forum

An online forum has been established by the Intergovernmental Committee on Surveying and Mapping to support users with the implementation of Australia's new datum, GDA2020. The forum is a place to discuss and share experiences, and find answers to questions relating to the datum modernisation. This includes sector-specific assistance with technical aspects of the change, as well as help for spatial data novices to understand how datums work. It is moderated by members of the GDA Modernisation Implementation Working Group and other technical specialists from around Australia.

Sub–forums cater for questions relating to:
  • tools, advice, and tips for converting spatial data;
  • the implementation or use of GDA2020 in specific software or hardware products (ESRIMapinfoQGISGNSSLIDAR and aerial imagery);
  • implementation within specific states and territories, (moderated by GMIWG members from that jurisdiction); and

concerns or issues faced by specific industries, such as mapping and surveying, utilities, mining, agriculture, construction, transport, environmental management, emergency services and scientific research.​


Manager (Spatial Operations)
Julian Gill
134 Macquarie Street
Hobart TAS 7000
Phone: 03 6165 4132
Mobile: 0400600034
Email: julian.gill@dpipwe.tas.gov.au
Website: TASMAP

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