Time Difference: San Francisco vs Sydney
Sydney is 18 hours ahead of San Francisco.
Quick Reference
- San Francisco
- PDT (GMT-7)
PST starts on Nov 1, 2026
- Sydney
- AEDT (GMT+11)
AEST starts on Apr 4, 2026
Frequently Asked Questions
- What is the time difference between San Francisco and Sydney?
- Sydney is 18 hours ahead of San Francisco.
- When is the best time to call from San Francisco 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. San Francisco uses PDT and Sydney uses AEDT.