Most of the year, São Paulo is 4 hours ahead of San Francisco. During Jan 1–Mar 7, Nov 1–Dec 31, São Paulo is 5 hours ahead of San Francisco.
| San Francisco | São Paulo Most of the year | São Paulo Jan 1–Mar 7, Nov 1–Dec 31 |
|---|---|---|
| 12 AM | 4 AM | 5 AM |
| 1 AM | 5 AM | 6 AM |
| 2 AM | 6 AM | 7 AM |
| 3 AM | 7 AM | 8 AM |
| 4 AM | 8 AM | 9 AM |
| 5 AM | 9 AM | 10 AM |
| 6 AM | 10 AM | 11 AM |
| 7 AM | 11 AM | 12 PM |
| 8 AM | 12 PM | 1 PM |
| 9 AM | 1 PM | 2 PM |
| 10 AM | 2 PM | 3 PM |
| 11 AM | 3 PM | 4 PM |
| 12 PM | 4 PM | 5 PM |
| 1 PM | 5 PM | 6 PM |
| 2 PM | 6 PM | 7 PM |
| 3 PM | 7 PM | 8 PM |
| 4 PM | 8 PM | 9 PM |
| 5 PM | 9 PM | 10 PM |
| 6 PM | 10 PM | 11 PM |
| 7 PM | 11 PM | 12 AMnext day |
| 8 PM | 12 AMnext day | 1 AMnext day |
| 9 PM | 1 AMnext day | 2 AMnext day |
| 10 PM | 2 AMnext day | 3 AMnext day |
| 11 PM | 3 AMnext day | 4 AMnext day |
San Francisco observes daylight saving time from Mar 8, 2026 to Nov 1, 2026, when clocks move forward one hour.
São Paulo does not observe daylight saving time (DST), so its offset stays the same all year.
Most of the year, São Paulo is 4 hours ahead of San Francisco. During Jan 1–Mar 7, Nov 1–Dec 31, São Paulo is 5 hours ahead of San Francisco.
San Francisco observes daylight saving time from Mar 8, 2026 to Nov 1, 2026, when clocks move forward one hour. São Paulo does not observe daylight saving time (DST), so its offset stays the same all year.
Most of the year: Both cities are in business hours at San Francisco 9 AM–2 PM (São Paulo 1 PM–6 PM). Jan 1–Mar 7, Nov 1–Dec 31: Both cities are in business hours at San Francisco 9 AM–1 PM (São Paulo 2 PM–6 PM).