Even people in paradise have to work. Generally local business hours are weekdays 8 to 5. Banks are usually open Monday to Thursday 8:30 to 4 and until 6 on Friday. Some banks have Saturday-morning hours.
Many self-serve gas stations stay open around the clock, with full-service stations usually open from around 7 am until 9 pm. U.S. post offices generally are open weekdays 8:30 or 9 to 4:30 or 5 and Saturday 8:30 or 9 to noon or 2. On Oahu, the Ala Moana post office is the only branch, other than the main Honolulu International Airport facility, that stays open until 4:15 pm on Saturday.
Most museums generally open their doors between 9 and 10 and stay open until 5 Tuesday to Saturday. Many museums operate with afternoon hours only on Sunday and close on Monday. Visitor-attraction hours vary, but most sights are open daily with the exception of major holidays such as Christmas. Check the local newspaper upon arrival for attraction hours and schedules if visiting over holiday periods. The local daily carries a listing of "What's Open/What's Not" for those time periods.
Stores in resort areas sometimes open as early as 8, with shopping-center opening hours varying from 9 to 10 on weekdays and Saturday, a bit later on Sunday. Bigger malls stay open until 9 weekdays and Saturday and close at 5 on Sunday. Boutiques in resort areas may stay open as late as 11.