Bangkok to San Antonio Time Difference
San Antonio is 12 hours behind Bangkok. When it's 11:29:56 PM in Bangkok, it's 11:29:56 AM in San Antonio.
How Many Hours Behind Is San Antonio From Bangkok?
San Antonio is 12 hours behind Bangkok. So Bangkok is 12 hours ahead of San Antonio looking the other way — the same gap, described from the other end.
In practice that means a working day in Bangkok starts when it is already 9:00 PM the previous day in San Antonio. The gap is not fixed all year: it becomes 13 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
Best Time to Call Bangkok and San Antonio
Standard 9-to-5 hours in Bangkok and San Antonio never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 10:00 AM in Bangkok, which is 7:00 PM to 10:00 PM in San Antonio.
both at work Bangkok only San Antonio only neither — hours shown along the strip are Bangkok local time.
Convert a Specific Time
Pick any date and time in Bangkok to see the exact equivalent in San Antonio.
Common Times Converted
Bangkok time on the left, San Antonio time on the right.
Bangkok to San Antonio: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Bangkok. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Bangkok | San Antonio | Working hours |
|---|---|---|
| 12:00 AM | 12:00 PM prev day | San Antonio only |
| 1:00 AM | 1:00 PM prev day | San Antonio only |
| 2:00 AM | 2:00 PM prev day | San Antonio only |
| 3:00 AM | 3:00 PM prev day | San Antonio only |
| 4:00 AM | 4:00 PM prev day | San Antonio only |
| 5:00 AM | 5:00 PM prev day | — |
| 6:00 AM | 6:00 PM prev day | — |
| 7:00 AM | 7:00 PM prev day | — |
| 8:00 AM | 8:00 PM prev day | — |
| 9:00 AM | 9:00 PM prev day | Bangkok only |
| 10:00 AM | 10:00 PM prev day | Bangkok only |
| 11:00 AM | 11:00 PM prev day | Bangkok only |
| 12:00 PM | 12:00 AM | Bangkok only |
| 1:00 PM | 1:00 AM | Bangkok only |
| 2:00 PM | 2:00 AM | Bangkok only |
| 3:00 PM | 3:00 AM | Bangkok only |
| 4:00 PM | 4:00 AM | Bangkok only |
| 5:00 PM | 5:00 AM | — |
| 6:00 PM | 6:00 AM | — |
| 7:00 PM | 7:00 AM | — |
| 8:00 PM | 8:00 AM | — |
| 9:00 PM | 9:00 AM | San Antonio only |
| 10:00 PM | 10:00 AM | San Antonio only |
| 11:00 PM | 11:00 AM | San Antonio only |
Understanding the Bangkok – San Antonio Time Difference
Bangkok runs on Asia/Bangkok, currently UTC+7:00. San Antonio runs on America/Chicago, currently CDT (UTC-5:00). The gap of 12 hours is simply the distance between those two offsets.
San Antonio observes Daylight Saving Time and Bangkok does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when San Antonio adjusts its clocks and the difference becomes 13 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in the United States.
Bangkok today
San Antonio today
Frequently Asked Questions
What is the time difference between Bangkok and San Antonio?
San Antonio is currently 12 hours behind Bangkok. That gap becomes 13 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
How many hours behind is San Antonio from Bangkok?
San Antonio is 12 hours behind Bangkok. Looking at it the other way, Bangkok is 12 hours ahead of San Antonio.
What time is it in San Antonio when it is 9:00 AM in Bangkok?
When it is 9:00 AM in Bangkok, it is 9:00 PM the previous day in San Antonio.
Is San Antonio ahead of or behind Bangkok?
San Antonio is 12 hours behind Bangkok. Bangkok reaches each point in the day first, so San Antonio is still getting started while the Bangkok working day is finishing.
What is the best time to call between Bangkok and San Antonio?
Standard business hours in Bangkok and San Antonio do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 7:00 AM to 10:00 AM in Bangkok, which is 7:00 PM to 10:00 PM in San Antonio.
Does the time difference between Bangkok and San Antonio change during the year?
Yes. San Antonio observes Daylight Saving Time and Bangkok does not, so the gap between them shifts during the year. It changes to 13 hours on Sunday, November 1, 2026.
What time zones are Bangkok and San Antonio in?
Bangkok uses the Asia/Bangkok time zone, currently UTC+7:00. San Antonio uses America/Chicago, currently CDT (UTC-5:00).