San Antonio to Sydney Time Difference
Sydney is 16 hours ahead of San Antonio. When it's 07:57:09 AM in San Antonio, it's 11:57:09 PM in Sydney.
How Many Hours Ahead Is Sydney From San Antonio?
Sydney is 16 hours ahead of San Antonio. So San Antonio is 16 hours behind Sydney 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 1:00 AM the next day in Sydney. The gap is not fixed all year: it becomes 17 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
Best Time to Call San Antonio and Sydney
Standard 9-to-5 hours in San Antonio and Sydney never overlap, so someone has to take the call outside their working day. The most workable window is 3:00 PM to 10:00 PM in San Antonio, which is 7:00 AM to 2:00 PM in Sydney.
both at work San Antonio only Sydney 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 Sydney.
Common Times Converted
San Antonio time on the left, Sydney time on the right.
San Antonio to Sydney: 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 | Sydney | Working hours |
|---|---|---|
| 12:00 AM | 4:00 PM | Sydney only |
| 1:00 AM | 5:00 PM | — |
| 2:00 AM | 6:00 PM | — |
| 3:00 AM | 7:00 PM | — |
| 4:00 AM | 8:00 PM | — |
| 5:00 AM | 9:00 PM | — |
| 6:00 AM | 10:00 PM | — |
| 7:00 AM | 11:00 PM | — |
| 8:00 AM | 12:00 AM next day | — |
| 9:00 AM | 1:00 AM next day | San Antonio only |
| 10:00 AM | 2:00 AM next day | San Antonio only |
| 11:00 AM | 3:00 AM next day | San Antonio only |
| 12:00 PM | 4:00 AM next day | San Antonio only |
| 1:00 PM | 5:00 AM next day | San Antonio only |
| 2:00 PM | 6:00 AM next day | San Antonio only |
| 3:00 PM | 7:00 AM next day | San Antonio only |
| 4:00 PM | 8:00 AM next day | San Antonio only |
| 5:00 PM | 9:00 AM next day | Sydney only |
| 6:00 PM | 10:00 AM next day | Sydney only |
| 7:00 PM | 11:00 AM next day | Sydney only |
| 8:00 PM | 12:00 PM next day | Sydney only |
| 9:00 PM | 1:00 PM next day | Sydney only |
| 10:00 PM | 2:00 PM next day | Sydney only |
| 11:00 PM | 3:00 PM next day | Sydney only |
Understanding the San Antonio – Sydney Time Difference
San Antonio runs on America/Chicago, currently CDT (UTC-5:00). Sydney runs on Australia/Sydney, currently AEDT (UTC+11:00). The gap of 16 hours is simply the distance between those two offsets.
Both cities observe Daylight Saving Time, but they don't switch on the same date — so for a few weeks each year the gap between them is different again. The next shift is on Sunday, November 1, 2026, when San Antonio adjusts its clocks and the difference becomes 17 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in the United States · Daylight Saving Time in Australia.
San Antonio today
Sydney today
Frequently Asked Questions
What is the time difference between San Antonio and Sydney?
Sydney is currently 16 hours ahead of San Antonio. That gap becomes 17 hours on Sunday, November 1, 2026, when San Antonio changes its clocks.
How many hours ahead is Sydney from San Antonio?
Sydney is 16 hours ahead of San Antonio. Looking at it the other way, San Antonio is 16 hours behind Sydney.
What time is it in Sydney when it is 9:00 AM in San Antonio?
When it is 9:00 AM in San Antonio, it is 1:00 AM the next day in Sydney.
Is Sydney ahead of or behind San Antonio?
Sydney is 16 hours ahead of San Antonio. Sydney 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 Sydney?
Standard business hours in San Antonio and Sydney do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 3:00 PM to 10:00 PM in San Antonio, which is 7:00 AM to 2:00 PM in Sydney.
Does the time difference between San Antonio and Sydney change during the year?
Yes. Both cities observe Daylight Saving Time, and they do not always switch on the same date, so the gap between them shifts during the year. It changes to 17 hours on Sunday, November 1, 2026.
What time zones are San Antonio and Sydney in?
San Antonio uses the America/Chicago time zone, currently CDT (UTC-5:00). Sydney uses Australia/Sydney, currently AEDT (UTC+11:00).