Time difference
Time difference between Perth and San Francisco
Find the best time to schedule a call or meeting.
San Francisco is currently 15 hours behind Perth.
Perth • GMT+8
10:52 PM
Thursday, Jun 18
San Francisco • PDT
7:52 AM
Thursday, Jun 18
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Best times to meet
Standard 9 AM – 5 PM hours in Perth and San Francisco do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Perth, or a 6–8 PM meeting in San Francisco.
Quick conversion table
| Perth | San Francisco |
|---|---|
| 8 AM | 5:00 PM (prev day) |
| 12 PM | 9:00 PM (prev day) |
| 3 PM | 12:00 AM |
| 5 PM | 2:00 AM |
| 9 PM | 6:00 AM |
Daylight saving
Heads up: the gap will widen to 16 hours around November 5, when one of the cities shifts for daylight saving. Double-check meeting times scheduled across that date.
Frequently asked questions
- How many hours ahead is San Francisco than Perth?
- San Francisco is 15 hours behind Perth.
- What time is 9 AM in Perth in San Francisco?
- 9:00 AM in Perth is 6:00 PM the previous day in San Francisco.
- Do Perth and San Francisco observe daylight saving?
- Heads up: the gap will widen to 16 hours around November 5, when one of the cities shifts for daylight saving. Double-check meeting times scheduled across that date.
- When is the best time to call San Francisco from Perth?
- Perth and San Francisco business hours don't overlap. The closest options are early mornings in Perth or late evenings, when one side stretches outside 9–5.