Sydney is currently 17 hours ahead of San Francisco. Convert time between Sydney and San Francisco, see the exact difference, and find the best hours for calls and meetings.
Sydney uses Australian Eastern Standard Time. San Francisco uses Pacific Daylight Time. Sydney time is 17 hours ahead of San Francisco. So, when it is 12:00 AM in Sydney, it is 7:00 AM in San Francisco.
Common Sydney times and their San Francisco equivalents.
| Sydney Time | San Francisco Time |
|---|---|
| 12:00 AM Sydney | 7:00 AM San Francisco |
| 1:00 AM Sydney | 8:00 AM San Francisco |
| 2:00 AM Sydney | 9:00 AM San Francisco |
| 3:00 AM Sydney | 10:00 AM San Francisco |
| 4:00 AM Sydney | 11:00 AM San Francisco |
| 5:00 AM Sydney | 12:00 PM San Francisco |
| 6:00 AM Sydney | 1:00 PM San Francisco |
| 7:00 AM Sydney | 2:00 PM San Francisco |
| 8:00 AM Sydney | 3:00 PM San Francisco |
| 9:00 AM Sydney | 4:00 PM San Francisco |
| 10:00 AM Sydney | 5:00 PM San Francisco |
| 11:00 AM Sydney | 6:00 PM San Francisco |
| 12:00 PM Sydney | 7:00 PM San Francisco |
| 1:00 PM Sydney | 8:00 PM San Francisco |
| 2:00 PM Sydney | 9:00 PM San Francisco |
| 3:00 PM Sydney | 10:00 PM San Francisco |
| 4:00 PM Sydney | 11:00 PM San Francisco |
| 5:00 PM Sydney | 12:00 AM San Francisco |
| 6:00 PM Sydney | 1:00 AM San Francisco |
| 7:00 PM Sydney | 2:00 AM San Francisco |
| 8:00 PM Sydney | 3:00 AM San Francisco |
| 9:00 PM Sydney | 4:00 AM San Francisco |
| 10:00 PM Sydney | 5:00 AM San Francisco |
| 11:00 PM Sydney | 6:00 AM San Francisco |
Sydney uses Australian Eastern Standard Time (AEST, UTC+10) in winter and Australian Eastern Daylight Time (AEDT, UTC+11) in summer. Because Australia is in the Southern Hemisphere, its summer runs October–April — the opposite of the Northern Hemisphere. Clocks go forward on the first Sunday of October and back on the first Sunday of April.
Los Angeles and the US West Coast use Pacific Time — Pacific Standard Time (PST, UTC−8) in winter and Pacific Daylight Time (PDT, UTC−7) in summer. The transition follows the same US schedule: forward in March, back in November. Silicon Valley operates in this timezone, making PT a reference point for the tech industry.
Both Sydney and San Francisco may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Sydney | San Francisco | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT+11 (UTC+11) | PST (UTC−8) | 19 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT+11 (UTC+11) | PDT (UTC−7) | 18 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+10 (UTC+10) | PDT (UTC−7) | 17 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT+11 (UTC+11) | PST (UTC−8) | 19 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Sydney is currently 17 hours ahead of San Francisco. Sydney uses Australian Eastern Standard Time (UTC+10) and San Francisco uses Pacific Daylight Time (UTC−7).
Sydney and San Francisco have no standard 9 am–6 pm business-hour overlap. Consider scheduling during early morning or late evening, or use a rotating schedule to share the inconvenience.
When it is 9:00 AM in Sydney, it is 4:00 pm in San Francisco (previous day). Sydney is 17 hours ahead of San Francisco.
When it is 5:00 PM in San Francisco, it is 10:00 am in Sydney (next day).
Both Sydney and San Francisco observe Daylight Saving Time, but their transitions may not happen on the same date. During the brief 1–2 week windows in spring and autumn when only one zone has changed clocks, the offset between the two cities shifts by one hour. For most of the year the difference is 17 hours, but double-check the transition dates if you have a recurring meeting scheduled near those windows.