Hours are not one universal schedule
Pearl Harbor is a campus of different operators
The Pearl Harbor Visitor Center is currently open daily from 7:00 a.m. to 5:00 p.m. The free grounds, two National Park Service museums, bookstore, information services and park film operate within that day. The visitor center closes on Thanksgiving Day, December 25 and January 1, while remaining open during the same hours on other federal holidays unless an alert says otherwise.
The USS Arizona Memorial program follows a narrower operating window. Current NPS guidance lists departures approximately every 15 minutes beginning at 8:00 a.m., with the final timed program at 3:30 p.m. The round trip is about 45 minutes from the Memorial Boarding Room, including the Navy boat ride, approximately 10–15 minutes on the memorial and the return. Wind, rain, harbor conditions or operational needs can suspend boat service even when the visitor center remains open.
Bowfin, Battleship Missouri and the Aviation Museum are independent partner attractions with their own admission desks, last-entry rules and closure policies. Their posted opening times do not tell you the latest sensible arrival. A museum that closes at 5:00 p.m. may stop entry earlier, and a Ford Island attraction requires enough time to ride the shuttle out and catch a return.
The best schedule begins with the least flexible element, usually the USS Arizona reservation. Place nearby activities around it, protect a full hour before the boat for arrival and orientation, then assign Ford Island attractions a large uninterrupted block. A day built only from advertised opening and closing hours often looks possible on paper but becomes rushed in practice.