Military survey.
Replaces Hong Kong 1963 for military purposes only in 1967. Replaced by Hong Kong 1980.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Hong Kong 1963(67)", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Military survey.", "area": "China - Hong Kong - onshore and offshore.", "bbox": { "south_latitude": 22.13, "west_longitude": 113.76, "north_latitude": 22.58, "east_longitude": 114.51 }, "id": { "authority": "EPSG", "code": 6739 } }