150NCurrent datum, previous datum and changeover time

150N Current datum, previous datum and changeover time

(1) The regulations may declare that, for the purposes of describing, in a title or other instrument under this Act, the position on the surface of the Earth of a point, line or area: (a) a specified datum is the current datum; and (b) that datum replaces the previous datum. (2) The previous datum is: (a) if a datum is the first datum declared to be the current datum under subsection (1)—the Australian Geodetic Datum; or (b) in any other case—the datum that was the current datum immediately before the changeover time. (3) The changeover time is the time when the declaration takes effect.