This entry was published at least two years ago (originally posted on February 3, 2020). Since that time the information may have become outdated or my beliefs may have changed (in general, assume a more open and liberal current viewpoint). A fuller disclaimer is available.
NSW and Victoria just jumped 1.8 metres north: Added to the list of “things I didn’t know about Australia”: It sits on a particularly fast-moving (~7cm/yr) tectonic plate, and due to a lack of updates since 1994, the GPS system is currently off by about six feet (but is soon to be fixed).