sec.11AGraticulation of earth’s surface into blocks and sub-blocks

### sec.11A Graticulation of earth’s surface into blocks and sub-blocks A block is the land resulting from a notional division of the earth’s surface, each block being bounded— by 2 parallels of latitude 5 minutes apart, each parallel being a multiple of 5 minutes of latitude from the equator; and by 2 meridians of longitude 5 minutes apart, each meridian being a multiple of 5 minutes of longitude from the prime meridian. A sub-block is the land resulting from a notional division of a block into 25 areas, each sub-block being bounded by 2 parallels of latitude 1 minute apart and 2 meridians of longitude 1 minute of longitude apart. For subsections (1) and (2) , latitude and longitude are defined by reference to the Australian Geodetic Datum 1966. Each block and sub-block must be identified in the way approved by the chief executive. Nothing in this section prevents the chief executive from representing blocks and sub-blocks in a spatial database by reference to a datum other than the Australian Geodetic Datum 1966. In this section— Australian Geodetic Datum 1966 means the reference frame with— a reference spheroid with a major (equatorial) radius of 6,378,160m and a flattening of 100/29825; and its origin at the Johnston Geodetic Station in the Northern Territory, taken to be at 133º12'30.0771" east longitude and 25º56'54.5515" south latitude and to have a ground level of 571.2m above the reference spheroid. The Australian Geodetic Datum 1966 was notified in the Commonwealth Gazette No. 84 on 6 October 1966 at page 4984. s 11A ins 2020 No. 9 s 36 (sec.11A-ssec.1) A block is the land resulting from a notional division of the earth’s surface, each block being bounded— by 2 parallels of latitude 5 minutes apart, each parallel being a multiple of 5 minutes of latitude from the equator; and by 2 meridians of longitude 5 minutes apart, each meridian being a multiple of 5 minutes of longitude from the prime meridian. (sec.11A-ssec.2) A sub-block is the land resulting from a notional division of a block into 25 areas, each sub-block being bounded by 2 parallels of latitude 1 minute apart and 2 meridians of longitude 1 minute of longitude apart. (sec.11A-ssec.3) For subsections (1) and (2) , latitude and longitude are defined by reference to the Australian Geodetic Datum 1966. (sec.11A-ssec.4) Each block and sub-block must be identified in the way approved by the chief executive. (sec.11A-ssec.5) Nothing in this section prevents the chief executive from representing blocks and sub-blocks in a spatial database by reference to a datum other than the Australian Geodetic Datum 1966. (sec.11A-ssec.6) In this section— Australian Geodetic Datum 1966 means the reference frame with— a reference spheroid with a major (equatorial) radius of 6,378,160m and a flattening of 100/29825; and its origin at the Johnston Geodetic Station in the Northern Territory, taken to be at 133º12'30.0771" east longitude and 25º56'54.5515" south latitude and to have a ground level of 571.2m above the reference spheroid. The Australian Geodetic Datum 1966 was notified in the Commonwealth Gazette No. 84 on 6 October 1966 at page 4984. - (a) by 2 parallels of latitude 5 minutes apart, each parallel being a multiple of 5 minutes of latitude from the equator; and - (b) by 2 meridians of longitude 5 minutes apart, each meridian being a multiple of 5 minutes of longitude from the prime meridian. - (a) a reference spheroid with a major (equatorial) radius of 6,378,160m and a flattening of 100/29825; and - (b) its origin at the Johnston Geodetic Station in the Northern Territory, taken to be at 133º12'30.0771" east longitude and 25º56'54.5515" south latitude and to have a ground level of 571.2m above the reference spheroid.