The time difference between San Antonio and Shanghai is 13 hours. When it is 12:00 noon in San Antonio, it is 01:00 in Shanghai. San Antonio uses the America/Chicago time zone (UTC-5), while Shanghai uses Asia/Shanghai (UTC+8).
| Detail | San Antonio | Shanghai |
|---|---|---|
| Time Zone ID | America/Chicago | Asia/Shanghai |
| UTC Offset | UTC-5 | UTC+8 |
| Abbreviation | CDT | CST |
| DST Active | Yes — currently observing | No |
| Country | United States | China |
| Region | North America | Asia |
With a 13 hours gap, there is no standard business-hours overlap between San Antonio and Shanghai. One party will need to adjust their schedule. Early mornings in Shanghai 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 Shanghai time. Rows highlighted in green indicate overlapping business hours in both cities.
| San Antonio | Shanghai | |
|---|---|---|
| 00:00 | 13:00 | Night |
| 01:00 | 14:00 | Night |
| 02:00 | 15:00 | Night |
| 03:00 | 16:00 | Night |
| 04:00 | 17:00 | Night |
| 05:00 | 18:00 | Night |
| 06:00 | 19:00 | |
| 07:00 | 20:00 | |
| 08:00 | 21:00 | |
| 09:00 | 22:00 | |
| 10:00 | 23:00 | |
| 11:00 | 00:00 (+1 day) | |
| 12:00 | 01:00 (+1 day) | |
| 13:00 | 02:00 (+1 day) | |
| 14:00 | 03:00 (+1 day) | |
| 15:00 | 04:00 (+1 day) | |
| 16:00 | 05:00 (+1 day) | |
| 17:00 | 06:00 (+1 day) | |
| 18:00 | 07:00 (+1 day) | |
| 19:00 | 08:00 (+1 day) | |
| 20:00 | 09:00 (+1 day) | |
| 21:00 | 10:00 (+1 day) | |
| 22:00 | 11:00 (+1 day) | Night |
| 23:00 | 12:00 (+1 day) | Night |
San Antonio is currently observing daylight saving time, while Shanghai is on standard time. When San Antonio switches back to standard time, the difference between these two cities will shift by 1 hour.
The time difference is 13 hours. Shanghai is 13 hours ahead of San Antonio.
Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.
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 13 hours to San Antonio time to get Shanghai 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.