Time Difference: Adelaide vs Sydney
Sydney is 0.5 hours ahead of Adelaide.
Quick Reference
- Adelaide
- ACDT (GMT+10:30)
ACST starts on Apr 4, 2026
- Sydney
- AEDT (GMT+11)
AEST starts on Apr 4, 2026
Frequently Asked Questions
- What is the time difference between Adelaide and Sydney?
- Sydney is 0.5 hours ahead of Adelaide.
- When is the best time to call from Adelaide 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. Adelaide uses ACDT and Sydney uses AEDT.