The time difference between San Antonio and Seoul is 15 hours. When it is 12:00 noon in San Antonio, it is 03:00 in Seoul. San Antonio uses the America/Chicago time zone (UTC-6), while Seoul uses Asia/Seoul (UTC+9).
| Detail | San Antonio | Seoul |
|---|---|---|
| Time Zone ID | America/Chicago | Asia/Seoul |
| UTC Offset | UTC-6 | UTC+9 |
| Abbreviation | CST | KST |
| DST Active | No | No |
| Country | United States | South Korea |
| Region | North America | Asia |
With a 15 hours gap, there is no standard business-hours overlap between San Antonio and Seoul. One party will need to adjust their schedule. Early mornings in Seoul or late evenings in San Antonio tend to be the most practical compromise.
Use this table to quickly convert any hour from San Antonio time to Seoul time. Rows highlighted in green indicate overlapping business hours in both cities.
| San Antonio | Seoul | |
|---|---|---|
| 00:00 | 15:00 | Night |
| 01:00 | 16:00 | Night |
| 02:00 | 17:00 | Night |
| 03:00 | 18:00 | Night |
| 04:00 | 19:00 | Night |
| 05:00 | 20:00 | Night |
| 06:00 | 21:00 | |
| 07:00 | 22:00 | |
| 08:00 | 23:00 | |
| 09:00 | 00:00 (+1 day) | |
| 10:00 | 01:00 (+1 day) | |
| 11:00 | 02:00 (+1 day) | |
| 12:00 | 03:00 (+1 day) | |
| 13:00 | 04:00 (+1 day) | |
| 14:00 | 05:00 (+1 day) | |
| 15:00 | 06:00 (+1 day) | |
| 16:00 | 07:00 (+1 day) | |
| 17:00 | 08:00 (+1 day) | |
| 18:00 | 09:00 (+1 day) | |
| 19:00 | 10:00 (+1 day) | |
| 20:00 | 11:00 (+1 day) | |
| 21:00 | 12:00 (+1 day) | |
| 22:00 | 13:00 (+1 day) | Night |
| 23:00 | 14:00 (+1 day) | Night |
Neither San Antonio nor Seoul is currently observing daylight saving time. If either city observes DST, the time difference will change by 1 hour when DST begins or ends. Always double-check before scheduling across these time zones during March–April and October–November.
The time difference is 15 hours. Seoul is 15 hours ahead of San Antonio.
It can. If either San Antonio or Seoul observes daylight saving time, the gap will shift by 1 hour during the transition periods (typically March–April and October–November).
There is no ideal window during standard business hours. Consider scheduling at the edges — early morning for the city that is ahead and late afternoon for the city that is behind.
Add 15 hours to San Antonio time to get Seoul time. Use the hour-by-hour table above for a quick reference.
For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.