San Francisco zone
PDT (GMT-7)
Sao Paulo zone
GMT-3 (GMT-3)
Difference
4 hours ahead of San Francisco
Business overlap
4h (9-5 windows)
Working hours overlap
Each cell is one hour in San Francisco. Filled cells mark when 9 AM – 5 PM in San Francisco and Sao Paulo both apply.
4 hours per day
- San Francisco
- GMT-7
- Sao Paulo
- GMT-3
- Difference
- +4h
- Business overlap
- 4h
Hour-by-hour conversion
Each row shows the matching local time in Sao Paulo for an hour in San Francisco.
| San Francisco | Sao Paulo | Day | Window |
|---|---|---|---|
| 12:00 AM | 4:00 AM | same day | — |
| 1:00 AM | 5:00 AM | same day | — |
| 2:00 AM | 6:00 AM | same day | — |
| 3:00 AM | 7:00 AM | same day | — |
| 4:00 AM | 8:00 AM | same day | — |
| 5:00 AM | 9:00 AM | same day | — |
| 6:00 AM | 10:00 AM | same day | — |
| 7:00 AM | 11:00 AM | same day | — |
| 8:00 AM | 12:00 PM | same day | — |
| 9:00 AM | 1:00 PM | same day | Both 9-5 |
| 10:00 AM | 2:00 PM | same day | Both 9-5 |
| 11:00 AM | 3:00 PM | same day | Both 9-5 |
| 12:00 PM | 4:00 PM | same day | Both 9-5 |
| 1:00 PM | 5:00 PM | same day | — |
| 2:00 PM | 6:00 PM | same day | — |
| 3:00 PM | 7:00 PM | same day | — |
| 4:00 PM | 8:00 PM | same day | — |
| 5:00 PM | 9:00 PM | same day | — |
| 6:00 PM | 10:00 PM | same day | — |
| 7:00 PM | 11:00 PM | same day | — |
| 8:00 PM | 12:00 AM | next day | — |
| 9:00 PM | 1:00 AM | next day | — |
| 10:00 PM | 2:00 AM | next day | — |
| 11:00 PM | 3:00 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 1:00 PM in San Francisco time. That gives you 4 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting San Francisco time to Sao Paulo time
San Francisco follows the America/Los_Angeles time zone (currently PDT, GMT-7), while Sao Paulo follows America/Sao_Paulo (currently GMT-3, GMT-3). Sao Paulo is 4 hours ahead of San Francisco right now.
San Francisco observes daylight saving time, while Sao Paulo does not. The offset between the two cities changes by one hour at the daylight saving transitions.
Daylight saving transitions in 2026
San Francisco
- Spring forward · Sunday, March 8, 2026
- Fall back · Sunday, November 1, 2026
Sao Paulo
Does not observe daylight saving time.
Reverse this conversion
Sao Paulo to San Francisco
Open the converter
Plan a meeting between San Francisco and Sao Paulo
More conversions from San Francisco
Frequently asked questions
- How many hours is San Francisco from Sao Paulo?
- Sao Paulo is 4 hours ahead of San Francisco right now.
- What time is 9:00 AM San Francisco in Sao Paulo?
- 9:00 AM in San Francisco is 1:00 PM in Sao Paulo.
- What time is 5:00 PM San Francisco in Sao Paulo?
- 5:00 PM in San Francisco is 9:00 PM in Sao Paulo.
- When do San Francisco and Sao Paulo business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 4 hours, roughly from 9:00 AM to 1:00 PM in San Francisco time.
- Does daylight saving time change the difference between San Francisco and Sao Paulo?
- San Francisco observes daylight saving time while Sao Paulo does not, so the offset between them changes by one hour twice a year.
Local time page
Time in San Francisco
Local time page
Time in Sao Paulo