Time difference between Japan and Guam: 1 hour
Japan
UTC+9
--:--:--
Guam
UTC+10
--:--:--
Japan is 1 hour behind Guam
Best time for a call or meeting
Japan 09:00–17:00 = Guam 10:00–18:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Guam
Hour-by-hour conversion
| Japan | Guam |
|---|---|
| 00:00 | 01:00 |
| 01:00 | 02:00 |
| 02:00 | 03:00 |
| 03:00 | 04:00 |
| 04:00 | 05:00 |
| 05:00 | 06:00 |
| 06:00 | 07:00 |
| 07:00 | 08:00 |
| 08:00 | 09:00 |
| 09:00 | 10:00 |
| 10:00 | 11:00 |
| 11:00 | 12:00 |
| 12:00 | 13:00 |
| 13:00 | 14:00 |
| 14:00 | 15:00 |
| 15:00 | 16:00 |
| 16:00 | 17:00 |
| 17:00 | 18:00 |
| 18:00 | 19:00 |
| 19:00 | 20:00 |
| 20:00 | 21:00 |
| 21:00 | 22:00 |
| 22:00 | 23:00 |
| 23:00 | 00:00 |
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 Japan and Guam?
Japan is 1 hour behind Guam. When it is 12:00 noon in Japan, it is 13:00 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?
Japan 09:00–17:00 = Guam 10:00–18:00. Both cities are within business hours (9:00–18:00).
Other countries & regions
Japan - South KoreaJapan - ChinaJapan - TaiwanJapan - Hong KongJapan - SingaporeJapan - ThailandJapan - VietnamJapan - PhilippinesJapan - CambodiaJapan - MalaysiaJapan - IndonesiaJapan - BaliJapan - IndiaJapan - UAEJapan - Saudi ArabiaJapan - TurkeyJapan - HawaiiJapan - United KingdomJapan - FranceJapan - GermanyJapan - ItalyJapan - SpainJapan - PortugalJapan - NetherlandsJapan - SwitzerlandJapan - SwedenJapan - PolandJapan - GreeceJapan - FinlandJapan - RussiaJapan - EgyptJapan - South AfricaJapan - United StatesJapan - CanadaJapan - MexicoJapan - BrazilJapan - ArgentinaJapan - ChileJapan - PeruJapan - ColombiaJapan - AustraliaJapan - New Zealand