We use WGS:84 as our geospatial datum, with 3 word addresses being conversions of coordinates in latitude and longitude. These coordinates refer to a point on the Earth’s surface and are static in relation to the movement of the Earth’s tectonic plates, with a movement averaging 2.5 cm per year. Therefore over time 3 word addresses that occupy the same location for a specific landmark will change, but at a very slow rate – apart from in the case of significant geographic events, at which point the change may come sooner. However, this is a universal issue with all mapping systems and as the standard bodies implement changes to the ways in which geographic datums function we will automatically follow these.

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