Time difference between Hawaii and Guam: 20 hours
Hawaii
UTC-10
--:--:--
Guam
UTC+10
--:--:--
Hawaii is 20 hours behind Guam
Best time for a call or meeting
Hawaii 13:00–18:00 = Guam 09:00–14:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Guam
Hour-by-hour conversion
| Hawaii | Guam |
|---|---|
| 00:00 | 20:00 |
| 01:00 | 21:00 |
| 02:00 | 22:00 |
| 03:00 | 23:00 |
| 04:00 | 00:00 |
| 05:00 | 01:00 |
| 06:00 | 02:00 |
| 07:00 | 03:00 |
| 08:00 | 04:00 |
| 09:00 | 05:00 |
| 10:00 | 06:00 |
| 11:00 | 07:00 |
| 12:00 | 08:00 |
| 13:00 | 09:00 |
| 14:00 | 10:00 |
| 15:00 | 11:00 |
| 16:00 | 12:00 |
| 17:00 | 13:00 |
| 18:00 | 14:00 |
| 19:00 | 15:00 |
| 20:00 | 16:00 |
| 21:00 | 17:00 |
| 22:00 | 18:00 |
| 23:00 | 19:00 |
Business hours 9–18 Waking hours 7–22 Night / early morning
Daylight saving time can change the difference by season. Shown values reflect the current offset.
Frequently asked questions
How many hours is the time difference between Hawaii and Guam?
Hawaii is 20 hours behind Guam. When it is 12:00 noon in Hawaii, it is 08:00 (next day) in Guam.
Does daylight saving time affect the difference?
No. Neither place observes daylight saving time, so the difference stays the same all year.
What is the best time for a call or meeting?
Hawaii 13:00–18:00 = Guam 09:00–14:00. Both cities are within business hours (9:00–18:00).
Other countries & regions
Hawaii - JapanHawaii - South KoreaHawaii - ChinaHawaii - TaiwanHawaii - Hong KongHawaii - SingaporeHawaii - ThailandHawaii - VietnamHawaii - PhilippinesHawaii - CambodiaHawaii - MalaysiaHawaii - IndonesiaHawaii - BaliHawaii - IndiaHawaii - UAEHawaii - Saudi ArabiaHawaii - TurkeyHawaii - United KingdomHawaii - FranceHawaii - GermanyHawaii - ItalyHawaii - SpainHawaii - PortugalHawaii - NetherlandsHawaii - SwitzerlandHawaii - SwedenHawaii - PolandHawaii - GreeceHawaii - FinlandHawaii - RussiaHawaii - EgyptHawaii - South AfricaHawaii - United StatesHawaii - CanadaHawaii - MexicoHawaii - BrazilHawaii - ArgentinaHawaii - ChileHawaii - PeruHawaii - ColombiaHawaii - AustraliaHawaii - New Zealand