Best Time to Meet Between San Francisco and Sydney

Time difference between San Francisco and Sydney

San Francisco and Sydney are 17h apart. When it's 9 AM in San Francisco, it's already 2:00 AM in Sydney — meaning Sydney's working day is well underway before San Francisco's morning has properly started.

The 1h of overlapping business hours is your synchronous window. Use it for decisions, code reviews, and anything that genuinely requires two people to think together. Push everything else — status updates, documentation questions, non-blocking feedback — into async channels so you're not burning your shared window on things that could be an email.

Recurring calendar invites for San Francisco–Sydney meetings need a DST audit every year. If one city's clocks change before the other's, there's a window — sometimes three weeks, sometimes five — where the same calendar slot lands an hour earlier or later than intended. Always schedule with explicit timezone labels, not just clock times.

The bigger risk isn't the 17h gap — it's that the 1h overlap creates a false sense of availability. Both sides are reachable at the same time, so meetings proliferate. The most effective San Francisco–Sydney teams treat their overlap window as a protected resource: one synchronized meeting per day maximum, async-first for everything else.