Hawaii does not observe daylight saving time and remains on HST at UTC-10:00 throughout the year.

U.S. Census Bureau TIGERweb Incorporated Places (ACS 2026)

Hawaii

49 CFR Part 71 — Standard Time Zone Boundaries

Daylight Saving Time

IANA tzdb zone1970.tab

Hawaii has no incorporated places in the Census Bureau's January 1, 2026 TIGERweb dataset; Census places in Hawaii are census-designated places rather than incorporated municipalities.

All of Hawaii is legally in Hawaii-Aleutian Time.

Hawaii is entirely in Hawaii-Aleutian Time and does not change clocks for daylight saving time.

Hawaii remains on UTC-10:00 throughout the year. The western Aleutian part of Alaska observes daylight saving time and advances to UTC-09:00.

Hawaii-Aleutian Time

Uniform Time

Time Zone Database Release 2026d

Hawaii-Aleutian Time covers all of Hawaii and the Aleutian Islands west of 169 degrees 30 minutes west longitude. Its standard offset is UTC-10:00, but daylight-saving practice differs between Hawaii and Alaska.

Hawaii Municipalities and Time Zones

Explore Hawaii

Census incorporated places in Hawaii

Time zones in Hawaii

What this directory counts in Hawaii

Need the municipality for a specific address?