Time difference between Guam and Hawaii: 20 hours
Guam
UTC+10
--:--:--
Hawaii
UTC-10
--:--:--
Guam is 20 hours ahead of Hawaii
Best time for a call or meeting
Guam 09:00–14:00 = Hawaii 13:00–18:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Hawaii
Hour-by-hour conversion
| Guam | Hawaii |
|---|---|
| 00:00 | 04:00 |
| 01:00 | 05:00 |
| 02:00 | 06:00 |
| 03:00 | 07:00 |
| 04:00 | 08:00 |
| 05:00 | 09:00 |
| 06:00 | 10:00 |
| 07:00 | 11:00 |
| 08:00 | 12:00 |
| 09:00 | 13:00 |
| 10:00 | 14:00 |
| 11:00 | 15:00 |
| 12:00 | 16:00 |
| 13:00 | 17:00 |
| 14:00 | 18:00 |
| 15:00 | 19:00 |
| 16:00 | 20:00 |
| 17:00 | 21:00 |
| 18:00 | 22:00 |
| 19:00 | 23:00 |
| 20:00 | 00:00 |
| 21:00 | 01:00 |
| 22:00 | 02:00 |
| 23:00 | 03:00 |
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 Guam and Hawaii?
Guam is 20 hours ahead of Hawaii. When it is 12:00 noon in Guam, it is 16:00 (previous day) in Hawaii.
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?
Guam 09:00–14:00 = Hawaii 13:00–18:00. Both cities are within business hours (9:00–18:00).
Other countries & regions
Guam - JapanGuam - South KoreaGuam - ChinaGuam - TaiwanGuam - Hong KongGuam - SingaporeGuam - ThailandGuam - VietnamGuam - PhilippinesGuam - CambodiaGuam - MalaysiaGuam - IndonesiaGuam - BaliGuam - IndiaGuam - UAEGuam - Saudi ArabiaGuam - TurkeyGuam - United KingdomGuam - FranceGuam - GermanyGuam - ItalyGuam - SpainGuam - PortugalGuam - NetherlandsGuam - SwitzerlandGuam - SwedenGuam - PolandGuam - GreeceGuam - FinlandGuam - RussiaGuam - EgyptGuam - South AfricaGuam - United StatesGuam - CanadaGuam - MexicoGuam - BrazilGuam - ArgentinaGuam - ChileGuam - PeruGuam - ColombiaGuam - AustraliaGuam - New Zealand