Does Perth observe daylight saving time?

No. Perth stays on AWST (UTC+8) all year, so its clocks don't change.

Does San Francisco observe daylight saving time?

Yes. San Francisco is on PDT (UTC-7) now, and its clocks go back 1 hour on Sun, Nov 1, to PST (UTC-8).

What time is it in San Francisco when it's 9 AM in Perth?

6:00 PM in San Francisco, the day before (Sat, Oct 17, when it's Sun, Oct 18 in Perth).

Perth to San Francisco Meeting Planner

San Francisco is 15 hours behind Perth right now. Their working days don't overlap today.

Perth · Australia

9:40 AM

Sun, Oct 18 · AWST

San Francisco · United States

6:40 PM

Sat, Oct 17 · PDT · summer time

Best Meeting Times Between Perth and San Francisco

No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 10:00 AM in Perth, which is 7:00 PM in San Francisco; consider splitting into two shorter meetings or shifting someone's hours.

Who's meeting

2 of 4 places

PerthOrganizerAustralia ·9:40AMnow
San FranciscoUnited States ·· summer time6:40PMYesterday · now

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Add up to 4 places by city, country, time zone or abbreviation, like Tokyo, India or JST. Press "/" to jump here.

Date in Perth

Working hours, everywhere

Best times to meet

Sunday, October 18, 2026, in Perth time.

10:00AMBest · GoodWorking hours in Perth (10:00); just outside working hours in San Francisco (19:00, previous day).
9:00AMOption 2 · GoodWorking hours in Perth (09:00); just outside working hours in San Francisco (18:00, previous day).
7:00AMOption 3 · GoodWorking hours in San Francisco (16:00, previous day); just outside working hours in Perth (07:00).

The whole day

Pick any slot in the Fit row, or use the arrow keys there, to make it the meeting time.

Each column is a one-hour slot of the first place's day. The Fit row grades how well the slot suits everyone; each row shows the local time and whether it's working hours there.
Fit
PerthAWST
San FranciscoPDT
UTC	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15

Working hours (09–17)Just outside (07–09, 17–20)Late evening (20–23)NightFit: optimal, good, possible, poor

Your meeting

Perth10:00 AM AWSTSun, Oct 18
San Francisco7:00 PM PDTSat, Oct 17
UTC2026-10-18 02:00 UTC

What will it cost? Try the meeting cost calculator.

Time difference between Perth and San Francisco

San Francisco is 15 hours behind Perth right now: San Francisco is on PDT (UTC-7) and Perth on AWST (UTC+8). That changes on Sun, Nov 1, when clocks go back in San Francisco: then San Francisco is 16 hours behind Perth.

Time difference between Perth and San Francisco over the next 12 months
From	Difference	Why
Now	San Francisco 15 hours behind	—
Sun, Nov 1	San Francisco 16 hours behind	Clocks go back in San Francisco
Sun, Mar 14, 2027	San Francisco 15 hours behind	Clocks go forward in San Francisco

Perth is on Australian Western Standard Time. San Francisco is on Pacific Standard Time.

Frequently Asked Questions: Perth & San Francisco Scheduling

What is the time difference between Perth and San Francisco?: San Francisco is 15 hours behind Perth right now: San Francisco is on PDT (UTC-7) and Perth on AWST (UTC+8). That changes on Sun, Nov 1, when clocks go back in San Francisco: then San Francisco is 16 hours behind Perth.
What is the best time to schedule a meeting between Perth and San Francisco?: No time falls inside working hours (9 AM to 5 PM) in both cities. The closest is 10:00 AM in Perth, which is 7:00 PM in San Francisco; consider splitting into two shorter meetings or shifting someone's hours.
Does Perth observe daylight saving time?: No. Perth stays on AWST (UTC+8) all year, so its clocks don't change.
Does San Francisco observe daylight saving time?: Yes. San Francisco is on PDT (UTC-7) now, and its clocks go back 1 hour on Sun, Nov 1, to PST (UTC-8).
What time is it in San Francisco when it's 9 AM in Perth?: 6:00 PM in San Francisco, the day before (Sat, Oct 17, when it's Sun, Oct 18 in Perth).

Or see every city pair, or plan with more places in the meeting planner.