Time Difference: Houston vs Sydney
Houston
3:58:15 AM CDT
Sunday, October 25, 2026
16h
16h
Sydney
7:58:15 PM AEDT
Sunday, October 25, 2026
Sydney is 16 hours ahead of Houston.
Quick Reference
- Houston
- CDT (GMT-5)
CST starts on Nov 1, 2026
- Sydney
- AEDT (GMT+11)
AEST starts on Apr 3, 2027
Frequently Asked Questions
- What is the time difference between Houston and Sydney?
- Sydney is 16 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 CDT and Sydney uses AEDT.