World Time ZonesTime difference: Seoul and Honolulu
Last updated:
Difference now−19 hHonolulu is 19 h behind Seoul
Time in Honolulu04:10UTC−10
Time in Seoul23:10UTC+9
Changes per year0same all year
Weekday 9–18 overlap4 h
Difference by month (2026, 1st of each month)
| Month | Difference |
|---|---|
| Jan | −19 h |
| Feb | −19 h |
| Mar | −19 h |
| Apr | −19 h |
| May | −19 h |
| Jun | −19 h |
| Jul | −19 h |
| Aug | −19 h |
| Sep | −19 h |
| Oct | −19 h |
| Nov | −19 h |
| Dec | −19 h |
Days in 2026 at each difference
365 d
Seoul → Honolulu conversion (today)
| Seoul | Honolulu |
|---|---|
| 00:00 | 05:00 (-1 d) |
| 01:00 | 06:00 (-1 d) |
| 02:00 | 07:00 (-1 d) |
| 03:00 | 08:00 (-1 d) |
| 04:00 | 09:00 (-1 d) |
| 05:00 | 10:00 (-1 d) |
| 06:00 | 11:00 (-1 d) |
| 07:00 | 12:00 (-1 d) |
| 08:00 | 13:00 (-1 d) |
| 09:00 | 14:00 (-1 d) |
| 10:00 | 15:00 (-1 d) |
| 11:00 | 16:00 (-1 d) |
| 12:00 | 17:00 (-1 d) |
| 13:00 | 18:00 (-1 d) |
| 14:00 | 19:00 (-1 d) |
| 15:00 | 20:00 (-1 d) |
| 16:00 | 21:00 (-1 d) |
| 17:00 | 22:00 (-1 d) |
| 18:00 | 23:00 (-1 d) |
| 19:00 | 00:00 |
| 20:00 | 01:00 |
| 21:00 | 02:00 |
| 22:00 | 03:00 |
| 23:00 | 04:00 |
Overlapping office hours today (09–18 local)
09:00 Seoul = 14:00 Honolulu, 10:00 Seoul = 15:00 Honolulu, 11:00 Seoul = 16:00 Honolulu, 12:00 Seoul = 17:00 Honolulu
Clock changes 2026–2027
Neither place changes its clocks in 2026–2027.
Calculated from the IANA Time Zone Database; governments can change their rules.
About this page
Honolulu is 19 h behind Seoul.