Hawaiʻi time zone (no daylight saving)

Hawaiʻi uses Hawaiʻi-Aleutian Standard Time (UTC minus 10) all year and does not switch for daylight saving time. That puts it 2 hours behind the U.S. West Coast in winter and 3 hours behind in summer.

• UTC minus 10 hours, all year.
• No daylight saving time, so the gap with the mainland changes in March and November.
• Winter (mainland on standard time): 2 hours behind Pacific, 5 hours behind Eastern.
• Summer (mainland on daylight time): 3 hours behind Pacific, 6 hours behind Eastern.
• Times on Ask Hawaiʻi, like alert end times, are shown in HST.

Source: NIST / time.gov: Official U.S. time

Last checked Oct. 29, 2026. Hours, fees and rules can change, so confirm with the official source before you go.