Perth & San Francisco: time difference and best time to meet
9–10 am in Perth.
5–6 pm in San Francisco, the day before.
Perth is 16 hours ahead of San Francisco today. One shared working hour, every working day. Book inside it and nobody starts early or stays late.
It’s 5:18 pm in Perth and 1:18 am in San Francisco.
A working day on both clocks · Perth time
Plan with people
Make it a board, and let them add their own hours
Your board
Bring these cities to your board
Your board already has you. Add Perth and San Francisco and invite someone in each, or start a new board for this meeting. Each person then adds their own hours.
Example board
- YYouNew YorkGood time
- SSamLondonsaid yes
- PPriyaBengaluruadded hours
Sam answered · 12:30 pm works
Best time to call San Francisco from Perth
Waking hours, 8 am–10 pm on each clock, overlap 8 am–2 pm in Perth, which is 4–10 pm the day before in San Francisco.
That’s for a call outside work: catching someone before or after their working day. For a work call, the meeting hours above fit inside both working days.
The year ahead
One clock change moves the meeting this year. Each step is a week when one side has changed and the other hasn’t, or a season when the gap swaps.
Both at workPerth 9 am–6 pmSan Francisco 9 am–6 pmFairest hourin Perth’s time
- Now until Sunday, March 14: Perth is 16 hours ahead of San Francisco. Shared hours: 9–10 am in Perth, 5–6 pm in San Francisco, the day before.
- From Sunday, March 14: Perth is 15 hours ahead of San Francisco. No shared hours; the fairest is 8:30–9:30 am in Perth, 5:30–6:30 pm in San Francisco, the day before.
Questions
What is the best time for a meeting between Perth and San Francisco?
9–10 am in Perth. 5–6 pm in San Francisco, the day before. That hour is where both working days, 9 am–6 pm, overlap, so a meeting there needs nobody to start early or stay late.
What is the time difference between Perth and San Francisco?
Perth is 16 hours ahead of San Francisco today.
When do the clocks change in Perth and San Francisco?
On Sunday, Mar 14 San Francisco turns its clocks forward, and the gap becomes 15 hours.
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