Honolulu zone
HST (GMT-10)
UTC zone
UTC (GMT-0)
Difference
10 hours ahead of Honolulu
Business overlap
No 9-5 overlap
Working hours overlap
Each cell is one hour in Honolulu. Filled cells mark when 9 AM – 5 PM in Honolulu and UTC both apply.
0 hours per day
- Honolulu
- GMT-10
- UTC
- GMT-0
- Difference
- +10h
- Business overlap
- 0h
Hour-by-hour conversion
Each row shows the matching local time in UTC for an hour in Honolulu.
| Honolulu | UTC | Day | Window |
|---|---|---|---|
| 12:00 AM | 10:00 AM | same day | — |
| 1:00 AM | 11:00 AM | same day | — |
| 2:00 AM | 12:00 PM | same day | — |
| 3:00 AM | 1:00 PM | same day | — |
| 4:00 AM | 2:00 PM | same day | — |
| 5:00 AM | 3:00 PM | same day | — |
| 6:00 AM | 4:00 PM | same day | — |
| 7:00 AM | 5:00 PM | same day | — |
| 8:00 AM | 6:00 PM | same day | — |
| 9:00 AM | 7:00 PM | same day | — |
| 10:00 AM | 8:00 PM | same day | — |
| 11:00 AM | 9:00 PM | same day | — |
| 12:00 PM | 10:00 PM | same day | — |
| 1:00 PM | 11:00 PM | same day | — |
| 2:00 PM | 12:00 AM | next day | — |
| 3:00 PM | 1:00 AM | next day | — |
| 4:00 PM | 2:00 AM | next day | — |
| 5:00 PM | 3:00 AM | next day | — |
| 6:00 PM | 4:00 AM | next day | — |
| 7:00 PM | 5:00 AM | next day | — |
| 8:00 PM | 6:00 AM | next day | — |
| 9:00 PM | 7:00 AM | next day | — |
| 10:00 PM | 8:00 AM | next day | — |
| 11:00 PM | 9:00 AM | next day | — |
Best meeting windows
Standard 9 AM – 5 PM hours in Honolulu and UTC do not overlap. Plan calls for early Honolulu morning or late Honolulu evening, and rotate the burden between sides.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Honolulu time to UTC time
Honolulu follows the Pacific/Honolulu time zone (currently HST, GMT-10), while UTC follows UTC (currently UTC, GMT-0). UTC is 10 hours ahead of Honolulu right now.
Neither city observes daylight saving time, so the offset between them is the same all year.
Reverse this conversion
UTC to Honolulu
Open the converter
Plan a meeting between Honolulu and UTC
More conversions from Honolulu
Frequently asked questions
- How many hours is Honolulu from UTC?
- UTC is 10 hours ahead of Honolulu right now.
- What time is 9:00 AM Honolulu in UTC?
- 9:00 AM in Honolulu is 7:00 PM in UTC.
- What time is 5:00 PM Honolulu in UTC?
- 5:00 PM in Honolulu is 3:00 AM (next day) in UTC.
- When do Honolulu and UTC business hours overlap?
- Standard 9 AM - 5 PM working hours in Honolulu and UTC do not overlap. You will need an early or late call.
- Does daylight saving time change the difference between Honolulu and UTC?
- Neither Honolulu nor UTC observes daylight saving time, so the offset between them is constant year-round.
Local time page
Time in Honolulu
Local time page
Time in UTC