PST to ART: US West Coast–Argentina time difference and best meeting times
San Francisco to Buenos Aires time · PST/PDT to ART
San Francisco and Buenos Aires share 4h of 9-to-5 working time for most of the year: 09:00–13:00 in San Francisco = 13:00–17:00 in Buenos Aires.
Buenos Aires is several hours ahead of San Francisco, so the Argentine afternoon meets the Californian morning.
Time difference
Buenos Aires is 4h ahead of San Francisco
Most of the year; see below for other dates.
Shared working hours
4h
09:00–13:00 in San Francisco = 13:00–17:00 in Buenos Aires
Fairest 1-hour meeting
09:00 in San Francisco = 13:00 in Buenos Aires
San Francisco stays within 09:00–17:00, Buenos Aires stays within 09:00–17:00.
How the gap changes in 2027
- 14 Mar – 6 Nov (238 days): Buenos Aires is 4h ahead of San Francisco. Shared hours: 09:00–13:00 in San Francisco = 13:00–17:00 in Buenos Aires.
- 1 Jan – 13 Mar, 7 Nov – 31 Dec (127 days): Buenos Aires is 5h ahead of San Francisco. Shared hours: 09:00–12:00 in San Francisco = 14:00–17:00 in Buenos Aires.
- San Francisco:
- UTC−8 standard, UTC−7 daylight saving
- Buenos Aires:
- UTC−3 all year (no daylight saving)
- 14 Mar: San Francisco clocks go forward 1h
- 7 Nov: San Francisco clocks go back 1h
Hour-by-hour: San Francisco to Buenos Aires
Working hours are 09:00–17:00; night is 23:00–07:00.
| San Francisco | Buenos Aires14 Mar – 6 Nov | Buenos Aires1 Jan – 13 Mar, 7 Nov – 31 Dec |
|---|---|---|
| 00:00 | 04:00 | 05:00 |
| 01:00 | 05:00 | 06:00 |
| 02:00 | 06:00 | 07:00 |
| 03:00 | 07:00 | 08:00 |
| 04:00 | 08:00 | 09:00 |
| 05:00 | 09:00 | 10:00 |
| 06:00 | 10:00 | 11:00 |
| 07:00 | 11:00 | 12:00 |
| 08:00 | 12:00 | 13:00 |
| 09:00 | 13:00 | 14:00 |
| 10:00 | 14:00 | 15:00 |
| 11:00 | 15:00 | 16:00 |
| 12:00 | 16:00 | 17:00 |
| 13:00 | 17:00 | 18:00 |
| 14:00 | 18:00 | 19:00 |
| 15:00 | 19:00 | 20:00 |
| 16:00 | 20:00 | 21:00 |
| 17:00 | 21:00 | 22:00 |
| 18:00 | 22:00 | 23:00 |
| 19:00 | 23:00 | 00:00 (next day) |
| 20:00 | 00:00 (next day) | 01:00 (next day) |
| 21:00 | 01:00 (next day) | 02:00 (next day) |
| 22:00 | 02:00 (next day) | 03:00 (next day) |
| 23:00 | 03:00 (next day) | 04:00 (next day) |
Tips for US West Coast and Argentina teams
- Argentina doesn't use daylight saving time, so the gap moves by an hour whenever San Francisco changes its clocks. Recurring meetings set in one place's time will shift for the other.
- There's enough shared time for a daily meeting. Booking it in the middle of the window leaves room for follow-ups on both sides.
Based on 09:00–17:00 working days in San Francisco and Buenos Aires, using 2027 clock-change dates. Real schedules vary, so confirm with your team.