Late Seoul, earlier London
Seoul evenings correspond to the middle of London’s day. London’s seasonal clock change shifts the local UK time while Seoul stays on the same offset in these examples. If you anchor a call to London time, warn Seoul participants that their displayed hour may move.
Seoul, KR: Asia/Seoul (city ID: seoul).
London, GB: Europe/London (city ID: london).
Does the difference change?
The destination-minus-source differences sampled on the 15th of each month in 2027 are −9h, −8h. These are dated examples, not a promise of fixed offsets or a complete historical range. A different reference date may have different rules.
| Source date | Seoul | London |
|---|---|---|
| 2027-01-16 | 10:00 Korean Standard Time | 2027-01-16 · 01:00 Same day · Greenwich Mean Time |
| 2027-07-16 | 10:00 Korean Standard Time | 2027-07-16 · 02:00 Same day · British Summer Time |
Daylight-saving rules depend on the city and date. When a local hour is missing or repeated, the converter rejects it or asks which occurrence you mean. Rules can change politically; reconfirm far-future meetings.