Hawaii Datum Transformations

This a new document that lists the best choices for datum transformations commonly needed in Hawaii by ArcGIS users. Includes Old Hawaiian Datum, NAD83(86), NAD83 HARN AND WGS84.

A word of caution - when someone says they are using NAD83, be sure to clarify which NAD83. The original NAD83 used in Hawaii is NAD83(86). The current NAD83 used in Hawaii is NAD83 HARN. The current NAD83 is also called NAD83 PACP00 (those are two zeroes on the end, say "pack-pee-zero-zero" not "pack-pooh").

http://www.gdsihawaii.com/hawpacgis/docs/Datum%20Transformations%20for%20Hawaii.pdf