Time Difference: Houston vs Sydney
Houston
9:29:26 AM CST
Friday, November 13, 2026
17h
17h
Sydney
2:29:26 AM AEDT
Saturday, November 14, 2026
Sydney is 17 hours ahead of Houston.
Quick Reference
- Houston
- CST (GMT-6)
CDT starts on Mar 14, 2027
- Sydney
- AEDT (GMT+11)
AEST starts on Apr 3, 2027
Frequently Asked Questions
- What is the time difference between Houston and Sydney?
- Sydney is 17 hours ahead of Houston.
- When is the best time to call from Houston to Sydney?
- The best time to call is during overlapping business hours (9 AM – 5 PM) in both cities. Use the interactive converter on this page to visually compare hours side by side.
- Does the time difference change with daylight saving time?
- The time difference may change when either city enters or exits daylight saving time. Houston uses CST and Sydney uses AEDT.