Sydney is 18-19 hours ahead of San Francisco. San Francisco uses Pacific Time (PST/PDT, UTC-8/-7) while Sydney uses Australian Eastern Time (AEST/AEDT, UTC+10/+11). When it's 12:00 PM in San Francisco, it's around 7:00 AM the next day in Sydney.
Both cities observe daylight saving time but in opposite seasons (summer vs winter), which causes the difference to vary throughout the year.
Best calling time: 2:00 PM - 6:00 PM San Francisco time. This corresponds to 9:00 AM - 1:00 PM the next day in Sydney, catching morning business hours.
San Francisco and Sydney are both iconic waterfront cities known for their distinctive bridges. The Bay Bridge and Golden Gate rival the Sydney Harbour Bridge as engineering marvels and city landmarks.