Hong Kong Principal Datum
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Hong Kong Principal Datum Open
Datum Details [VALID]
Name: Hong Kong Principal Datum
Code: 5135
Type: vertical
Usage:
Usage Details
Scope: Geodesy, cadastre, engineering survey.
Extent:

Origin: 1.23m below the mean of 19 years (1965-83) observations of tide levels at North Point, Victoria Harbour.
Realisation Method:
Publication Date: 1980