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Time difference between San Francisco and Buenos Aires

Buenos Aires is 4 hours ahead of San Francisco

Right now

San Francisco
09:38
PDT · UTC-7
Buenos Aires
13:38
ART · UTC-3

Open this pair in the planner

Best time for a call between San Francisco and Buenos Aires

Hours highlighted in green work for everyone on the list.

  • 09:00 San Francisco 13:00 Buenos Aires
  • 10:00 San Francisco 14:00 Buenos Aires
  • 11:00 San Francisco 15:00 Buenos Aires

Hour by hour: San Francisco to Buenos Aires

Working hours are shaded. The rows marked with a star are the ones we recommend for a call.

San Francisco (reference) Buenos Aires
00:00 04:00
01:00 05:00
02:00 06:00
03:00 07:00
04:00 08:00
05:00 09:00
06:00 10:00
07:00 11:00
08:00 12:00
★ 09:00 13:00
★ 10:00 14:00
★ 11:00 15:00
12:00 16:00
13:00 17:00
14:00 18:00
15:00 19:00
16:00 20:00
17:00 21:00
18:00 22:00
19:00 23:00
20:00 00:00 (next day)
21:00 01:00 (next day)
22:00 02:00 (next day)
23:00 03:00 (next day)

Table built for August 26, 2026. The live values above update in your browser.

Daylight saving time

San Francisco changes its clocks and Buenos Aires does not, so the difference between them is not the same all year.

Frequently asked questions

What is the time difference between San Francisco and Buenos Aires?

Buenos Aires is 4 hours ahead of San Francisco

What is the best time to call between San Francisco and Buenos Aires?

The most convenient slot is 09:00 San Francisco / 13:00 Buenos Aires. That keeps the call inside working hours in both cities.

Does the difference between San Francisco and Buenos Aires change during the year?

San Francisco changes its clocks and Buenos Aires does not, so the difference between them is not the same all year.

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