San Antonio to Sydney Time Difference
Sydney is 15 hours ahead of San Antonio. When it is noon in San Antonio, it is 03:00 in Sydney.
Chicago (UTC-5) → Sydney (UTC+10)
🕐 Interactive Time Explorer
When it's 06:00 in San Antonio, it's 21:00 in Sydney
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
San Antonio & Sydney◐ Extended Hours (5 hours)
✈️ Travel Information
Distance
13,526 km
Est. Flight Time
~16.9h
Time Difference
+15h
Work Hours Overlap
0h
None
🔴 Office Closed
No overlap available
No overlap
⏰ Quick Conversion
06:00
San Antonio
21:00
Sydney
09:00
San Antonio
00:00
Sydney (+1)
12:00
San Antonio
03:00
Sydney (+1)
15:00
San Antonio
06:00
Sydney (+1)
18:00
San Antonio
09:00
Sydney (+1)
21:00
San Antonio
12:00
Sydney (+1)
00:00
San Antonio
15:00
Sydney
03:00
San Antonio
18:00
Sydney
Frequently Asked Questions
How many hours is San Antonio behind Sydney?
Sydney is 15 hours ahead of San Antonio. When it is 12:00 noon in San Antonio, it is 03:00 in Sydney. San Antonio operates on America/Chicago (UTC-5), while Sydney uses Australia/Sydney (UTC+10).
What is the best time to call Sydney from San Antonio?
Standard business hours (9 AM–5 PM) do not overlap between San Antonio and Sydney due to the 15 hours difference. Consider early morning or late evening calls, or use async communication.
Does the San Antonio to Sydney time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between San Antonio and Sydney
The distance between San Antonio and Sydney is approximately 13,526 km. A direct flight typically takes around 16.9 hours. Your arrival clock will show local Sydney time — use our Flight Time Calculator to predict exact arrival times.