EPSG:6718

DATUM["Solomon_1968",
    SPHEROID["International 1924",6378388,297,
        AUTHORITY["EPSG","7022"]],
    AUTHORITY["EPSG","6718"]]

DATUM["Solomon 1968",
    ELLIPSOID["International 1924",6378388,297,
        LENGTHUNIT["metre",1]],
    ID["EPSG",6718]]

DATUM["D_Solomon_1968",
    SPHEROID["International_1924",6378388.0,297.0]]

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Solomon 1968",
    "ellipsoid": {
        "name": "International 1924",
        "semi_major_axis": 6378388,
        "inverse_flattening": 297
    },
    "scope": "Military survey.",
    "area": "Solomon Islands - onshore southern Solomon Islands, primarily Guadalcanal, Malaita, San Cristobel, Santa Isobel, Choiseul, Makira-Ulawa.",
    "bbox": {
        "south_latitude": -10.9,
        "west_longitude": 155.62,
        "north_latitude": -6.55,
        "east_longitude": 162.44
    },
    "id": {
        "authority": "EPSG",
        "code": 6718
    }
}