Seoul to Guam Time Difference
🇰🇷 Seoul is currently 1 hour ahead of 🇬🇺 Guam.
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Atin 🇰🇷 Seoul→it will be—in 🇬🇺 Guam
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Difference
+1h
Business overlap
8h
Distance
3,210 km
Approx. flight
3.8h
Hour-by-Hour: Seoul to Guam
| 🇰🇷 Seoul | 🇬🇺 Guam | Note |
|---|---|---|
| 12:00 AM | 1:00 AM | |
| 1:00 AM | 2:00 AM | |
| 2:00 AM | 3:00 AM | |
| 3:00 AM | 4:00 AM | |
| 4:00 AM | 5:00 AM | |
| 5:00 AM | 6:00 AM | |
| 6:00 AM | 7:00 AM | |
| 7:00 AM | 8:00 AM | |
| 8:00 AM | 9:00 AM | |
| 9:00 AM | 10:00 AM | |
| 10:00 AM | 11:00 AM | |
| 11:00 AM | 12:00 PM | |
| 12:00 PM | 1:00 PM | |
| 1:00 PM | 2:00 PM | |
| 2:00 PM | 3:00 PM | |
| 3:00 PM | 4:00 PM | |
| 4:00 PM | 5:00 PM | |
| 5:00 PM | 6:00 PM | |
| 6:00 PM | 7:00 PM | |
| 7:00 PM | 8:00 PM | |
| 8:00 PM | 9:00 PM | |
| 9:00 PM | 10:00 PM | |
| 10:00 PM | 11:00 PM | |
| 11:00 PM | 12:00 AM(next day) | Next day |
Daylight Saving Time (DST)
Neither Seoul nor Guam observes Daylight Saving Time. The time difference is always 1 hour ahead.
Best Meeting Times
There are 8 overlapping business hours between Seoul and Guam (9 AM – 6 PM in each city).
🇰🇷 Seoul
9:00 AM – 5:00 PM
🇬🇺 Guam
10:00 AM – 6:00 PM
Frequently Asked Questions
What is the time difference between Seoul and Guam?
The time difference between Seoul and Guam is currently 1 hour ahead. Seoul uses GMT+9 (UTC+9), while Guam uses GMT+10 (UTC+10).
When it's noon in Seoul, what time is it in Guam?
When it's 12:00 PM (noon) in Seoul, it is 1:00 PM in Guam. Use our calculator above to convert any other time.
Does the time difference between Seoul and Guam change?
No. The time difference between Seoul and Guam is always 1 hour ahead — neither city observes Daylight Saving Time, so the offset never changes.
What are the best times to schedule a call between Seoul and Guam?
The best time to call is between 9:00 AM and 5:00 PM in Seoul (which is 10:00 AM – 6:00 PM in Guam). This 8-hour window falls within business hours in both cities.
Is Seoul ahead or behind Guam?
Seoul is currently 1 hour behind Guam.
What time zone is Seoul in?
Seoul is in the Asia/Seoul time zone, currently using GMT+9 (UTC+9). Seoul does not observe Daylight Saving Time.
What time is midnight in Seoul in Guam?
When it is midnight (12:00 AM) in Seoul, it is 1:00 AM in Guam.