KST to United Kingdom time conversion
United Kingdom is 8 hours behind KST. After the next clock change (): United Kingdom is 9 hours behind KST.
Time difference with your location
KST is 9 hours ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in KST to convert it to United Kingdom on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · KST → United Kingdom
This table converts each hour in KST to United Kingdom on 2026-10-22.
- Working hours
- Outside working hours
- Night hours
| KST | United Kingdom | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 16:004:00 PM -1 day | |
| 01:001:00 AM | 17:005:00 PM -1 day | |
| 02:002:00 AM | 18:006:00 PM -1 day | |
| 03:003:00 AM | 19:007:00 PM -1 day | |
| 04:004:00 AM | 20:008:00 PM -1 day | |
| 05:005:00 AM | 21:009:00 PM -1 day | |
| 06:006:00 AM | 22:0010:00 PM -1 day | |
| 07:007:00 AM | 23:0011:00 PM -1 day | |
| 08:008:00 AM | 00:0012:00 AM | |
| 09:009:00 AM | 01:001:00 AM | |
| 10:0010:00 AM | 02:002:00 AM | |
| 11:0011:00 AM | 03:003:00 AM | |
| 12:0012:00 PM | 04:004:00 AM | |
| 13:001:00 PM | 05:005:00 AM | |
| 14:002:00 PM | 06:006:00 AM | |
| 15:003:00 PM | 07:007:00 AM | |
| 16:004:00 PM | 08:008:00 AM | ✓ |
| 17:005:00 PM | 09:009:00 AM | ✓ |
| 18:006:00 PM | 10:0010:00 AM | |
| 19:007:00 PM | 11:0011:00 AM | |
| 20:008:00 PM | 12:0012:00 PM | |
| 21:009:00 PM | 13:001:00 PM | |
| 22:0010:00 PM | 14:002:00 PM | |
| 23:0011:00 PM | 15:003:00 PM |
Quick conversion examples
These examples use KST (UTC+9) and United Kingdom (UTC+1); choosing a date applies the local clock changes.
Conversion formula: United Kingdom = KST − 8h · KST − 9h.
| KST | United Kingdom |
|---|---|
| 6:00 AM KST | = 10:00 PM United Kingdom (-1 day) |
| 7:00 AM KST | = 11:00 PM United Kingdom (-1 day) |
| 8:00 AM KST | = 12:00 AM United Kingdom |
| 9:00 AM KST | = 1:00 AM United Kingdom |
| 10:00 AM KST | = 2:00 AM United Kingdom |
| 12:00 PM KST | = 4:00 AM United Kingdom |
| 3:00 PM KST | = 7:00 AM United Kingdom |
| 5:00 PM KST | = 9:00 AM United Kingdom |
| 6:00 PM KST | = 10:00 AM United Kingdom |
| 8:00 PM KST | = 12:00 PM United Kingdom |
Overlapping meeting hours
The 08:00–18:00 working day in KST and United Kingdom overlaps for 2 hours on 2026-10-22.
- Shared working hours
- 16:00–18:00 KST · 08:00–10:00 United Kingdom
Clock changes on both sides, 2026–2028
KST and United Kingdom have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | KST | United Kingdom |
|---|---|---|
| 2026 | No clock changes; UTC+9 all year. | · 01:00 → 02:00 · 02:00 → 01:00 |
| 2027 | No clock changes; UTC+9 all year. | · 01:00 → 02:00 · 02:00 → 01:00 |
| 2028 | No clock changes; UTC+9 all year. | · 01:00 → 02:00 · 02:00 → 01:00 |
At the start of 2026, United Kingdom is 9 hours behind KST. The difference changes during the following periods.
- From 2026-03-29 10:00 KST until 2026-10-25 10:00 KST, United Kingdom is 8 hours behind KST.
- From 2027-03-28 10:00 KST until 2027-10-31 10:00 KST, United Kingdom is 8 hours behind KST.
- From 2028-03-26 10:00 KST until 2028-10-29 10:00 KST, United Kingdom is 8 hours behind KST.
Frequently asked questions
What time is 9 AM KST in United Kingdom?
9:00 AM KST = 1:00 AM United Kingdom, using UTC+9 and UTC+1. Choose a date above for the seasonal local time.
Does the time difference between KST and United Kingdom change during the year?
Yes. During 2026–2028: United Kingdom is 9 hours behind KST; United Kingdom is 8 hours behind KST. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in United Kingdom?
Read the United Kingdom clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between KST and United Kingdom?
The shared 08:00–18:00 working window is 16:00–18:00 KST / 08:00–10:00 United Kingdom, a total of 2 hours.
What is the time difference between KST and United Kingdom now?
Right now, United Kingdom is 8 hours behind KST. Conversion formula: United Kingdom = KST − 8h · KST − 9h.