Hawaii to California time conversion
California is 3 hours ahead of Hawaii. After the next clock change (): California is 2 hours ahead of Hawaii.
Time difference with your location
Hawaii is 10 hours behind UTC. Compare with your local time →
Choose a date and time
Choose the local time in Hawaii to convert it to California on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · Hawaii → California
This table converts each hour in Hawaii to California on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| Hawaii | California | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 03:003:00 AM | |
| 01:001:00 AM | 04:004:00 AM | |
| 02:002:00 AM | 05:005:00 AM | |
| 03:003:00 AM | 06:006:00 AM | |
| 04:004:00 AM | 07:007:00 AM | |
| 05:005:00 AM | 08:008:00 AM | |
| 06:006:00 AM | 09:009:00 AM | |
| 07:007:00 AM | 10:0010:00 AM | |
| 08:008:00 AM | 11:0011:00 AM | ✓ |
| 09:009:00 AM | 12:0012:00 PM | ✓ |
| 10:0010:00 AM | 13:001:00 PM | ✓ |
| 11:0011:00 AM | 14:002:00 PM | ✓ |
| 12:0012:00 PM | 15:003:00 PM | ✓ |
| 13:001:00 PM | 16:004:00 PM | ✓ |
| 14:002:00 PM | 17:005:00 PM | ✓ |
| 15:003:00 PM | 18:006:00 PM | |
| 16:004:00 PM | 19:007:00 PM | |
| 17:005:00 PM | 20:008:00 PM | |
| 18:006:00 PM | 21:009:00 PM | |
| 19:007:00 PM | 22:0010:00 PM | |
| 20:008:00 PM | 23:0011:00 PM | |
| 21:009:00 PM | 00:0012:00 AM +1 day | |
| 22:0010:00 PM | 01:001:00 AM +1 day | |
| 23:0011:00 PM | 02:002:00 AM +1 day |
Quick conversion examples
These examples convert local times in Hawaii to California on 2026-10-21.
Conversion formula: California = Hawaii + 3h · Hawaii + 2h.
| Hawaii | California |
|---|---|
| 6:00 AM Hawaii | = 9:00 AM California |
| 7:00 AM Hawaii | = 10:00 AM California |
| 8:00 AM Hawaii | = 11:00 AM California |
| 9:00 AM Hawaii | = 12:00 PM California |
| 10:00 AM Hawaii | = 1:00 PM California |
| 12:00 PM Hawaii | = 3:00 PM California |
| 3:00 PM Hawaii | = 6:00 PM California |
| 5:00 PM Hawaii | = 8:00 PM California |
| 6:00 PM Hawaii | = 9:00 PM California |
| 8:00 PM Hawaii | = 11:00 PM California |
Overlapping meeting hours
The 08:00–18:00 working day in Hawaii and California overlaps for 7 hours on 2026-10-21.
- Shared working hours
- 08:00–15:00 Hawaii · 11:00–18:00 California
Clock changes on both sides, 2026–2028
Hawaii and California have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | Hawaii | California |
|---|---|---|
| 2026 | No clock changes; UTC-10 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2027 | No clock changes; UTC-10 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
| 2028 | No clock changes; UTC-10 all year. | · 02:00 → 03:00 · 02:00 → 01:00 |
At the start of 2026, California is 2 hours ahead of Hawaii. The difference changes during the following periods.
- From 2026-03-08 00:00 Hawaii until 2026-10-31 23:00 Hawaii, California is 3 hours ahead of Hawaii.
- From 2027-03-14 00:00 Hawaii until 2027-11-06 23:00 Hawaii, California is 3 hours ahead of Hawaii.
- From 2028-03-12 00:00 Hawaii until 2028-11-04 23:00 Hawaii, California is 3 hours ahead of Hawaii.
Frequently asked questions
What time is 9 AM Hawaii in California?
9:00 AM Hawaii = 12:00 PM California, using UTC-10 and UTC-7. Choose a date above for the seasonal local time.
Does the time difference between Hawaii and California change during the year?
Yes. During 2026–2028: California is 2 hours ahead of Hawaii; California is 3 hours ahead of Hawaii. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in California?
Read the California clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between Hawaii and California?
The shared 08:00–18:00 working window is 08:00–15:00 Hawaii / 11:00–18:00 California, a total of 7 hours.
What is the time difference between Hawaii and California now?
Right now, California is 3 hours ahead of Hawaii. Conversion formula: California = Hawaii + 3h · Hawaii + 2h.