Shared clock, distinct locations
Seoul and Tokyo have the same local time in the reference examples. Keep both cities in a meeting plan when their preferred work windows differ: sharing an offset does not establish shared availability. Date and weekday labels still matter when exporting a late-evening meeting to other participants.
Seoul, KR: Asia/Seoul (city ID: seoul).
Tokyo, JP: Asia/Tokyo (city ID: tokyo).
Does the difference change?
The destination-minus-source differences sampled on the 15th of each month in 2027 are +0h. 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 | Tokyo |
|---|---|---|
| 2027-01-16 | 10:00 Korean Standard Time | 2027-01-16 · 10:00 Same day · Japan Standard Time |
| 2027-07-16 | 10:00 Korean Standard Time | 2027-07-16 · 10:00 Same day · Japan Standard 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.