Tokyo to San Antonio Time Difference
San Antonio is 14 hours behind Tokyo. When it's 12:08:57 AM in Tokyo, it's 10:08:57 AM in San Antonio.
How Many Hours Behind Is San Antonio From Tokyo?
San Antonio is 14 hours behind Tokyo. So Tokyo is 14 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 Tokyo starts when it is already 7:00 PM the previous day in San Antonio. The gap is not fixed all year: it becomes 15 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
Best Time to Call Tokyo and San Antonio
Standard 9-to-5 hours in Tokyo 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 12:00 PM in Tokyo, which is 5:00 PM to 10:00 PM in San Antonio.
both at work Tokyo only San Antonio only neither — hours shown along the strip are Tokyo local time.
Convert a Specific Time
Pick any date and time in Tokyo to see the exact equivalent in San Antonio.
Common Times Converted
Tokyo time on the left, San Antonio time on the right.
Tokyo to San Antonio: Full 24-Hour Conversion Table
Based on today, Monday, October 12, 2026 in Tokyo. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Tokyo | San Antonio | Working hours |
|---|---|---|
| 12:00 AM | 10:00 AM prev day | San Antonio only |
| 1:00 AM | 11:00 AM prev day | San Antonio only |
| 2:00 AM | 12:00 PM prev day | San Antonio only |
| 3:00 AM | 1:00 PM prev day | San Antonio only |
| 4:00 AM | 2:00 PM prev day | San Antonio only |
| 5:00 AM | 3:00 PM prev day | San Antonio only |
| 6:00 AM | 4:00 PM prev day | San Antonio only |
| 7:00 AM | 5:00 PM prev day | — |
| 8:00 AM | 6:00 PM prev day | — |
| 9:00 AM | 7:00 PM prev day | Tokyo only |
| 10:00 AM | 8:00 PM prev day | Tokyo only |
| 11:00 AM | 9:00 PM prev day | Tokyo only |
| 12:00 PM | 10:00 PM prev day | Tokyo only |
| 1:00 PM | 11:00 PM prev day | Tokyo only |
| 2:00 PM | 12:00 AM | Tokyo only |
| 3:00 PM | 1:00 AM | Tokyo only |
| 4:00 PM | 2:00 AM | Tokyo only |
| 5:00 PM | 3:00 AM | — |
| 6:00 PM | 4:00 AM | — |
| 7:00 PM | 5:00 AM | — |
| 8:00 PM | 6:00 AM | — |
| 9:00 PM | 7:00 AM | — |
| 10:00 PM | 8:00 AM | — |
| 11:00 PM | 9:00 AM | San Antonio only |
Understanding the Tokyo – San Antonio Time Difference
Tokyo runs on Asia/Tokyo, currently JST (UTC+9:00). San Antonio runs on America/Chicago, currently CDT (UTC-5:00). The gap of 14 hours is simply the distance between those two offsets.
San Antonio observes Daylight Saving Time and Tokyo 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 15 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Japan · Daylight Saving Time in the United States.
Tokyo today
San Antonio today
Frequently Asked Questions
What is the time difference between Tokyo and San Antonio?
San Antonio is currently 14 hours behind Tokyo. That gap becomes 15 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
How many hours behind is San Antonio from Tokyo?
San Antonio is 14 hours behind Tokyo. Looking at it the other way, Tokyo is 14 hours ahead of San Antonio.
What time is it in San Antonio when it is 9:00 AM in Tokyo?
When it is 9:00 AM in Tokyo, it is 7:00 PM the previous day in San Antonio.
Is San Antonio ahead of or behind Tokyo?
San Antonio is 14 hours behind Tokyo. Tokyo reaches each point in the day first, so San Antonio is still getting started while the Tokyo working day is finishing.
What is the best time to call between Tokyo and San Antonio?
Standard business hours in Tokyo 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 12:00 PM in Tokyo, which is 5:00 PM to 10:00 PM in San Antonio.
Does the time difference between Tokyo and San Antonio change during the year?
Yes. San Antonio observes Daylight Saving Time and Tokyo does not, so the gap between them shifts during the year. It changes to 15 hours on Sunday, November 1, 2026.
What time zones are Tokyo and San Antonio in?
Tokyo uses the Asia/Tokyo time zone, currently JST (UTC+9:00). San Antonio uses America/Chicago, currently CDT (UTC-5:00).