UTC to KST: UTC is 9 hours behind KST
Coordinated Universal Time is 9 hours behind Korea Standard Time, on every day of the year. It is 7:36 pm UTC in UTC and 4:36 am KST in Korea, which is already the next day there.
Convert a specific time from UTC to KST
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between UTC and KST?
Korea Standard Time is 9 hours ahead of Coordinated Universal Time. To go from UTC to KST you add 9 hours. That gap holds on all 365 days of 2026: neither zone moves its clocks.
UTC to KST conversion table
Every hour of Wednesday, September 23, 2026 in UTC, with the matching reading in Korea. 9 of the 24 hours land on a different calendar date in Korea, which is the part people get wrong when they schedule across this pair.
| UTC | UTC 24h | KST | KST 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 9:00 am | 09:00 | same day |
| 1:00 am | 01:00 | 10:00 am | 10:00 | same day |
| 2:00 am | 02:00 | 11:00 am | 11:00 | same day |
| 3:00 am | 03:00 | 12:00 pm | 12:00 | same day |
| 4:00 am | 04:00 | 1:00 pm | 13:00 | same day |
| 5:00 am | 05:00 | 2:00 pm | 14:00 | same day |
| 6:00 am | 06:00 | 3:00 pm | 15:00 | same day |
| 7:00 am | 07:00 | 4:00 pm | 16:00 | same day |
| 8:00 am | 08:00 | 5:00 pm | 17:00 | same day |
| 9:00 am | 09:00 | 6:00 pm | 18:00 | same day |
| 10:00 am | 10:00 | 7:00 pm | 19:00 | same day |
| 11:00 am | 11:00 | 8:00 pm | 20:00 | same day |
| 12:00 pm | 12:00 | 9:00 pm | 21:00 | same day |
| 1:00 pm | 13:00 | 10:00 pm | 22:00 | same day |
| 2:00 pm | 14:00 | 11:00 pm | 23:00 | same day |
| 3:00 pm | 15:00 | 12:00 am | 00:00 | the next day |
| 4:00 pm | 16:00 | 1:00 am | 01:00 | the next day |
| 5:00 pm | 17:00 | 2:00 am | 02:00 | the next day |
| 6:00 pm | 18:00 | 3:00 am | 03:00 | the next day |
| 7:00 pm | 19:00 | 4:00 am | 04:00 | the next day |
| 8:00 pm | 20:00 | 5:00 am | 05:00 | the next day |
| 9:00 pm | 21:00 | 6:00 am | 06:00 | the next day |
| 10:00 pm | 22:00 | 7:00 am | 07:00 | the next day |
| 11:00 pm | 23:00 | 8:00 am | 08:00 | the next day |
What are the best hours to schedule a call between UTC and KST?
No hour of the standard 9:00 am to 5:00 pm working day falls inside working hours on both sides. UTC and Korea are 9 hours apart, which is too far for an overlap, so somebody has to take a call outside their own working day. The least painful options are below, ranked by how close both sides sit to the middle of the afternoon.
| UTC | KST | Working hours | Note |
|---|---|---|---|
| 7:00 am | 4:00 pm | KST only | early morning in UTC, afternoon in Korea |
| 8:00 am | 5:00 pm | neither side | mid morning in UTC, evening in Korea |
| 9:00 am | 6:00 pm | UTC only | mid morning in UTC, evening in Korea |
Does daylight saving change UTC to KST?
Coordinated Universal Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Korea Standard Time does not move its clocks at all, so its UTC+9 offset holds every day of the year.
Is UTC ahead of or behind KST?
UTC is behind KST by 9 hours: when it is 12:00 pm in UTC, it is 9:00 pm in Korea. Neither Coordinated Universal Time nor Korea Standard Time observes daylight saving, so the abbreviations never change and the gap between them is fixed.
Coordinated Universal Time covers the reference all other zones are measured against. Korea Standard Time covers Seoul and South Korea. The identifiers behind them are Etc/UTC and Asia/Seoul, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is UTC in KST?
- UTC is 9 hours behind KST. 9:00 am UTC is 6:00 pm KST.
- How many hours ahead is KST of UTC?
- KST is 9 hours ahead of UTC.
- What time is it in Korea right now?
- 4:36 am KST on Thursday, September 24, 2026.
- When can UTC and Korea meet during working hours?
- There is no shared working hour. The closest fit is 7:00 am UTC, which is 4:00 pm KST.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so UTC and KST are the abbreviations genuinely in force today rather than a fixed assumption.
Other conversions
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