tidealmanac
No predictions loaded for 1996. This site serves NOAA predictions from its own store, and this period has not been fetched for Povorotni Island, Pogibshi Point yet. Nothing is estimated or interpolated in its place. NOAA's own page for the station has the official table: tidesandcurrents.noaa.gov.

tidealmanac.site/us/ak/povorotni-island-pogibshi-point-9451936/1996

Povorotni Island, Pogibshi Point, AK tide table 1996 (printable) · Tide Almanac