Monterrey to San Francisco Time Difference
San Francisco is 1 hour behind Monterrey. When it's 07:34:10 AM in Monterrey, it's 06:34:10 AM in San Francisco.
How Many Hours Behind Is San Francisco From Monterrey?
San Francisco is 1 hour behind Monterrey. So Monterrey is 1 hour ahead of San Francisco looking the other way — the same gap, described from the other end.
In practice that means a working day in Monterrey starts when it is already 8:00 AM in San Francisco. The gap is not fixed all year: it becomes 2 hours on Sunday, November 1, 2026, when San Francisco changes its clocks.
Best Time to Call Monterrey and San Francisco
Both cities are inside normal business hours between 10:00 AM and 5:00 PM in Monterrey — that's 9:00 AM to 4:00 PM in San Francisco. That's a 7-hour window, so a call fits comfortably in either side's working day.
both at work Monterrey only San Francisco only neither — hours shown along the strip are Monterrey local time.
Convert a Specific Time
Pick any date and time in Monterrey to see the exact equivalent in San Francisco.
Common Times Converted
Monterrey time on the left, San Francisco time on the right.
Monterrey to San Francisco: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Monterrey. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Monterrey | San Francisco | Working hours |
|---|---|---|
| 12:00 AM | 11:00 PM prev day | — |
| 1:00 AM | 12:00 AM | — |
| 2:00 AM | 1:00 AM | — |
| 3:00 AM | 2:00 AM | — |
| 4:00 AM | 3:00 AM | — |
| 5:00 AM | 4:00 AM | — |
| 6:00 AM | 5:00 AM | — |
| 7:00 AM | 6:00 AM | — |
| 8:00 AM | 7:00 AM | — |
| 9:00 AM | 8:00 AM | Monterrey only |
| 10:00 AM | 9:00 AM | Both cities |
| 11:00 AM | 10:00 AM | Both cities |
| 12:00 PM | 11:00 AM | Both cities |
| 1:00 PM | 12:00 PM | Both cities |
| 2:00 PM | 1:00 PM | Both cities |
| 3:00 PM | 2:00 PM | Both cities |
| 4:00 PM | 3:00 PM | Both cities |
| 5:00 PM | 4:00 PM | San Francisco only |
| 6:00 PM | 5:00 PM | — |
| 7:00 PM | 6:00 PM | — |
| 8:00 PM | 7:00 PM | — |
| 9:00 PM | 8:00 PM | — |
| 10:00 PM | 9:00 PM | — |
| 11:00 PM | 10:00 PM | — |
Understanding the Monterrey – San Francisco Time Difference
Monterrey runs on America/Monterrey, currently CST (UTC-6:00). San Francisco runs on America/Los_Angeles, currently PDT (UTC-7:00). The gap of 1 hour is simply the distance between those two offsets.
San Francisco observes Daylight Saving Time and Monterrey does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when San Francisco adjusts its clocks and the difference becomes 2 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Mexico · Daylight Saving Time in the United States.
Monterrey today
San Francisco today
Frequently Asked Questions
What is the time difference between Monterrey and San Francisco?
San Francisco is currently 1 hour behind Monterrey. That gap becomes 2 hours on Sunday, November 1, 2026, when San Francisco changes its clocks.
How many hours behind is San Francisco from Monterrey?
San Francisco is 1 hour behind Monterrey. Looking at it the other way, Monterrey is 1 hour ahead of San Francisco.
What time is it in San Francisco when it is 9:00 AM in Monterrey?
When it is 9:00 AM in Monterrey, it is 8:00 AM in San Francisco.
Is San Francisco ahead of or behind Monterrey?
San Francisco is 1 hour behind Monterrey. Monterrey reaches each point in the day first, so San Francisco is still getting started while the Monterrey working day is finishing.
What is the best time to call between Monterrey and San Francisco?
Between 10:00 AM and 5:00 PM Monterrey time, which is 9:00 AM to 4:00 PM in San Francisco. Both cities are inside normal business hours during that window.
Does the time difference between Monterrey and San Francisco change during the year?
Yes. San Francisco observes Daylight Saving Time and Monterrey does not, so the gap between them shifts during the year. It changes to 2 hours on Sunday, November 1, 2026.
What time zones are Monterrey and San Francisco in?
Monterrey uses the America/Monterrey time zone, currently CST (UTC-6:00). San Francisco uses America/Los_Angeles, currently PDT (UTC-7:00).