Sydney to San Antonio Time Difference
San Antonio is 15 hours behind Sydney. When it is noon in Sydney, it is 21:00 in San Antonio.
Sydney (UTC+10) → Chicago (UTC-5)
🕐 Interactive Time Explorer
When it's 03:00 in Sydney, it's 12:00 in San Antonio
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Sydney & San Antonio◐ 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
Sydney
15:00
San Antonio (-1)
09:00
Sydney
18:00
San Antonio (-1)
12:00
Sydney
21:00
San Antonio (-1)
15:00
Sydney
00:00
San Antonio
18:00
Sydney
03:00
San Antonio
21:00
Sydney
06:00
San Antonio
00:00
Sydney
09:00
San Antonio (-1)
03:00
Sydney
12:00
San Antonio (-1)
Frequently Asked Questions
How many hours is Sydney ahead of San Antonio?
San Antonio is 15 hours behind Sydney. When it is 12:00 noon in Sydney, it is 21:00 in San Antonio. Sydney operates on Australia/Sydney (UTC+10), while San Antonio uses America/Chicago (UTC-5).
What is the best time to call San Antonio from Sydney?
Standard business hours (9 AM–5 PM) do not overlap between Sydney and San Antonio due to the 15 hours difference. Consider early morning or late evening calls, or use async communication.
Does the Sydney to San Antonio 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 Sydney and San Antonio
The distance between Sydney and San Antonio is approximately 13,526 km. A direct flight typically takes around 16.9 hours. Your arrival clock will show local San Antonio time — use our Flight Time Calculator to predict exact arrival times.