San Antonio to Tokyo Time Difference
Tokyo is 14 hours ahead of San Antonio. When it's 07:57:40 AM in San Antonio, it's 09:57:40 PM in Tokyo.
How Many Hours Ahead Is Tokyo From San Antonio?
Tokyo is 14 hours ahead of San Antonio. So San Antonio is 14 hours behind Tokyo looking the other way — the same gap, described from the other end.
In practice that means a working day in San Antonio starts when it is already 11:00 PM in Tokyo. 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 San Antonio and Tokyo
Standard 9-to-5 hours in San Antonio and Tokyo never overlap, so someone has to take the call outside their working day. The most workable window is 5:00 PM to 10:00 PM in San Antonio, which is 7:00 AM to 12:00 PM in Tokyo.
both at work San Antonio only Tokyo only neither — hours shown along the strip are San Antonio local time.
Convert a Specific Time
Pick any date and time in San Antonio to see the exact equivalent in Tokyo.
Common Times Converted
San Antonio time on the left, Tokyo time on the right.
San Antonio to Tokyo: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in San Antonio. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| San Antonio | Tokyo | Working hours |
|---|---|---|
| 12:00 AM | 2:00 PM | Tokyo only |
| 1:00 AM | 3:00 PM | Tokyo only |
| 2:00 AM | 4:00 PM | Tokyo only |
| 3:00 AM | 5:00 PM | — |
| 4:00 AM | 6:00 PM | — |
| 5:00 AM | 7:00 PM | — |
| 6:00 AM | 8:00 PM | — |
| 7:00 AM | 9:00 PM | — |
| 8:00 AM | 10:00 PM | — |
| 9:00 AM | 11:00 PM | San Antonio only |
| 10:00 AM | 12:00 AM next day | San Antonio only |
| 11:00 AM | 1:00 AM next day | San Antonio only |
| 12:00 PM | 2:00 AM next day | San Antonio only |
| 1:00 PM | 3:00 AM next day | San Antonio only |
| 2:00 PM | 4:00 AM next day | San Antonio only |
| 3:00 PM | 5:00 AM next day | San Antonio only |
| 4:00 PM | 6:00 AM next day | San Antonio only |
| 5:00 PM | 7:00 AM next day | — |
| 6:00 PM | 8:00 AM next day | — |
| 7:00 PM | 9:00 AM next day | Tokyo only |
| 8:00 PM | 10:00 AM next day | Tokyo only |
| 9:00 PM | 11:00 AM next day | Tokyo only |
| 10:00 PM | 12:00 PM next day | Tokyo only |
| 11:00 PM | 1:00 PM next day | Tokyo only |
Understanding the San Antonio – Tokyo Time Difference
San Antonio runs on America/Chicago, currently CDT (UTC-5:00). Tokyo runs on Asia/Tokyo, currently JST (UTC+9:00). 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 the United States · Daylight Saving Time in Japan.
San Antonio today
Tokyo today
Frequently Asked Questions
What is the time difference between San Antonio and Tokyo?
Tokyo is currently 14 hours ahead of San Antonio. That gap becomes 15 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
How many hours ahead is Tokyo from San Antonio?
Tokyo is 14 hours ahead of San Antonio. Looking at it the other way, San Antonio is 14 hours behind Tokyo.
What time is it in Tokyo when it is 9:00 AM in San Antonio?
When it is 9:00 AM in San Antonio, it is 11:00 PM in Tokyo.
Is Tokyo ahead of or behind San Antonio?
Tokyo is 14 hours ahead of San Antonio. Tokyo reaches each point in the day first, so its working day is already finishing while San Antonio is still getting started.
What is the best time to call between San Antonio and Tokyo?
Standard business hours in San Antonio and Tokyo do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 5:00 PM to 10:00 PM in San Antonio, which is 7:00 AM to 12:00 PM in Tokyo.
Does the time difference between San Antonio and Tokyo 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 San Antonio and Tokyo in?
San Antonio uses the America/Chicago time zone, currently CDT (UTC-5:00). Tokyo uses Asia/Tokyo, currently JST (UTC+9:00).