Time difference between South Korea and Guam: 1 hour
South Korea
UTC+9
--:--:--
Guam
UTC+10
--:--:--
South Korea is 1 hour behind Guam
Best time for a call or meeting
South Korea 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
| South Korea | 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 South Korea and Guam?
South Korea is 1 hour behind Guam. When it is 12:00 noon in South Korea, 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?
South Korea 09:00–17:00 = Guam 10:00–18:00. Both cities are within business hours (9:00–18:00).
Other countries & regions
South Korea - JapanSouth Korea - ChinaSouth Korea - TaiwanSouth Korea - Hong KongSouth Korea - SingaporeSouth Korea - ThailandSouth Korea - VietnamSouth Korea - PhilippinesSouth Korea - CambodiaSouth Korea - MalaysiaSouth Korea - IndonesiaSouth Korea - BaliSouth Korea - IndiaSouth Korea - UAESouth Korea - Saudi ArabiaSouth Korea - TurkeySouth Korea - HawaiiSouth Korea - United KingdomSouth Korea - FranceSouth Korea - GermanySouth Korea - ItalySouth Korea - SpainSouth Korea - PortugalSouth Korea - NetherlandsSouth Korea - SwitzerlandSouth Korea - SwedenSouth Korea - PolandSouth Korea - GreeceSouth Korea - FinlandSouth Korea - RussiaSouth Korea - EgyptSouth Korea - South AfricaSouth Korea - United StatesSouth Korea - CanadaSouth Korea - MexicoSouth Korea - BrazilSouth Korea - ArgentinaSouth Korea - ChileSouth Korea - PeruSouth Korea - ColombiaSouth Korea - AustraliaSouth Korea - New Zealand