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Location, Location, Location Seminar

Hidden : Wednesday, 20 January 2021
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Geocache Description:

20 January 2021, 19:00 - 20:00

An educational seminar on location types, formats and datums!

I thought I would kick off 2021 with a community event to present an overview of location representations and formats applicable to geocaching. I am certainly no expert on this topic, but I did assist our department/function with the recent transition from GDA94 to GDA2020. At the time, I prepared a small slide pack and presented to my peers, and realised that a lot of this topic is applicable to the geocaching community.

When: Wednesday 20th January from 7:00 p.m. to 8:00 p.m.
Where: Regent Room at the Box Factory Community Centre, 59 Regent St South, Adelaide SA 5000.

Audience: This session is aimed at those with little-some knowledge of coordinate data, location theory, and different formats of representing locations.


  • Coordinate systems:
    • Geographic coordinate system; and
    • Projected/map/grid coordinate system;
  • Datums:
    • Global vs local geodetic datum; and
    • Specific datums: AGD 1966, 1984; and GDA 1994, 2020; and
  • Other representations:
    • Military grid;
    • Plus codes; and
    • What3words.

COVID-19 mitigations:

  • This event has a COVID-Safe plan lodged with the SA Government (COVID-Safe Plan No. 9209130);
  • The CO event host will be the COVID-19 Marshal (Certificate No. 7745537);
  • All attendees will be expected to note their contact details for traceability purposes only; and
  • Hand sanitiser will be available.

This event has also been organised on behalf of Geocaching SA Inc.

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