Time difference between London and Seoul
Seoul is 8 hours ahead of London. When it's 9:00 in London, it's 17:00 in Seoul.
Seoul is 8 hours ahead of London.
On Tuesday, 6 October 2026, 09:00 in London is 17:00 in Seoul. London is UTC+1; Seoul is UTC+9.
The gap through 2026
- 1 Jan – 29 MarSeoul is 9 hours ahead of London.
- 29 Mar – 25 OctSeoul is 8 hours ahead of London.
- 25 Oct – 31 DecSeoul is 9 hours ahead of London.
- London moves its clocks forward on 29 March (UTC → UTC+1).
- London moves its clocks back on 25 October (UTC+1 → UTC).
London to Seoul, hour by hour
On Tuesday 6 October.
| London | Seoul |
|---|---|
| 07:00 Early morning | 15:00 Working hours |
| 08:00 Early morning | 16:00 Working hours |
| 09:00 Working hours | 17:00 Evening |
| 10:00 Working hours | 18:00 Evening |
| 11:00 Working hours | 19:00 Evening |
| 12:00 Working hours | 20:00 Evening |
| 13:00 Working hours | 21:00 Evening |
| 14:00 Working hours | 22:00 Sleeping hours |
| 15:00 Working hours | 23:00 Sleeping hours |
| 16:00 Working hours | 00:00+1 Sleeping hours |
| 17:00 Evening | 01:00+1 Sleeping hours |
| 18:00 Evening | 02:00+1 Sleeping hours |
| 19:00 Evening | 03:00+1 Sleeping hours |
| 20:00 Evening | 04:00+1 Sleeping hours |
| 21:00 Evening | 05:00+1 Sleeping hours |
| 22:00 Sleeping hours | 06:00+1 Sleeping hours |
Daylight saving in 2026
- London moves its clocks forward on Sunday 29 March (UTC → UTC+1).
- London moves its clocks back on Sunday 25 October (UTC+1 → UTC).
- 1 Jan – 29 MarSeoul is 9 hours ahead of London.
- 29 Mar – 25 OctSeoul is 8 hours ahead of London.
- 25 Oct – 31 DecSeoul is 9 hours ahead of London.
Best times for a call
Working hours (09:00–17:00) in London and Seoul don't overlap, so any call is early or late for someone.
- London 07:00Early morningSeoul 15:00Working hours
- London 08:00Early morningSeoul 16:00Working hours
- London 09:00Working hoursSeoul 17:00Evening
More time differences for London and Seoul
- New York and London
- Los Angeles and London
- Chicago and London
- Toronto and London
- London and Paris
- London and Berlin
- London and Dubai
- London and Karachi
- London and Mumbai
- London and Singapore
- London and Tokyo
- London and Sydney
- New York and Seoul
- Los Angeles and Seoul
- Chicago and Seoul
- Paris and Seoul
- Berlin and Seoul
- London and Beijing
- London and Shanghai
- London and Hong Kong
- London and Kuala Lumpur
- London and Jakarta
- London and Manila
- London and Bangkok
- London and Ho Chi Minh City
- London and Delhi
- London and Bengaluru
- London and Lahore
- London and Dhaka
- London and Colombo
- London and Abu Dhabi
- London and Riyadh
How the time difference calculator works
The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.
Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.
Examples
- London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
- Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.
Good for
- Knowing when a colleague's day starts
- Setting expectations for replies across time zones
- Planning travel and jet lag
Frequently asked questions
- What time is it in Seoul when it's 9 AM in London?
- 5:00 PM — as of 6 October 2026. Seoul is 8 hours ahead of London.
- Does the time difference between London and Seoul change?
- Yes. In 2026 it's 9 hours or 8 hours, depending on the date, because only London changes its clocks.
- What's the best time for a call between London and Seoul?
- There's no hour when both cities are in working hours (09:00–17:00). The fairest is around 07:00 in London (15:00 in Seoul).
- What time zones are London and Seoul in?
- London uses Europe/London (UTC+1 today); Seoul uses Asia/Seoul (UTC+9 today).
Related tools
- Time Zone ConverterConvert a time between cities and time zones, with daylight saving handled and a clear sign of whether it's a reasonable hour for everyone..
- Meeting Time FinderFind the best meeting time for people in different time zones.
- Date CalculatorAdd or subtract days, weeks, months or years from a date, or count the days, weeks and months between two dates..
- Working Hours CalculatorCalculate working hours per day, week, month and year from your shifts, breaks and working week — Monday–Friday, Sunday–Thursday or your own..
See everyone's local time as you schedule
Daykite converts every time in your calendar, so nobody gets an invite at 3 a.m.