Time difference between Honolulu and Seoul: 19 hours
Honolulu
United States (Hawaii) · UTC-10
--:--:--
Seoul
South Korea · UTC+9
--:--:--
Honolulu is 19 hours behind Seoul
Best time for a call or meeting
Honolulu 14:00–18:00 = Seoul 09:00–13:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Seoul
Hour-by-hour conversion
| Honolulu | Seoul |
|---|---|
| 00:00 | 19:00 |
| 01:00 | 20:00 |
| 02:00 | 21:00 |
| 03:00 | 22:00 |
| 04:00 | 23:00 |
| 05:00 | 00:00 |
| 06:00 | 01:00 |
| 07:00 | 02:00 |
| 08:00 | 03:00 |
| 09:00 | 04:00 |
| 10:00 | 05:00 |
| 11:00 | 06:00 |
| 12:00 | 07:00 |
| 13:00 | 08:00 |
| 14:00 | 09:00 |
| 15:00 | 10:00 |
| 16:00 | 11:00 |
| 17:00 | 12:00 |
| 18:00 | 13:00 |
| 19:00 | 14:00 |
| 20:00 | 15:00 |
| 21:00 | 16:00 |
| 22:00 | 17:00 |
| 23:00 | 18:00 |
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 Honolulu and Seoul?
Honolulu is 19 hours behind Seoul. When it is 12:00 noon in Honolulu, it is 07:00 (next day) in Seoul.
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?
Honolulu 14:00–18:00 = Seoul 09:00–13:00. Both cities are within business hours (9:00–18:00).
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