Time Difference: Adelaide vs San Francisco
Adelaide
4:11:50 PM ACST
Thursday, May 14, 2026
16h 30m
16h 30m
San Francisco
11:41:50 PM PDT
Wednesday, May 13, 2026
San Francisco is 16.5 hours behind Adelaide.
Quick Reference
- Adelaide
- ACST (GMT+9:30)
ACDT starts on Oct 3, 2026
- San Francisco
- PDT (GMT-7)
PST starts on Nov 1, 2026
Frequently Asked Questions
- What is the time difference between Adelaide and San Francisco?
- San Francisco is 16.5 hours behind Adelaide.
- When is the best time to call from Adelaide to San Francisco?
- 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 ACST and San Francisco uses PDT.