Mexico City to San Diego Time Difference
San Diego is 1 hour behind Mexico City. When it's 06:58:12 AM in Mexico City, it's 05:58:12 AM in San Diego.
How Many Hours Behind Is San Diego From Mexico City?
San Diego is 1 hour behind Mexico City. So Mexico City is 1 hour ahead of San Diego looking the other way — the same gap, described from the other end.
In practice that means a working day in Mexico City starts when it is already 8:00 AM in San Diego. The gap is not fixed all year: it becomes 2 hours on Sunday, November 1, 2026, when San Diego changes its clocks.
Best Time to Call Mexico City and San Diego
Both cities are inside normal business hours between 10:00 AM and 5:00 PM in Mexico City — that's 9:00 AM to 4:00 PM in San Diego. That's a 7-hour window, so a call fits comfortably in either side's working day.
both at work Mexico City only San Diego only neither — hours shown along the strip are Mexico City local time.
Convert a Specific Time
Pick any date and time in Mexico City to see the exact equivalent in San Diego.
Common Times Converted
Mexico City time on the left, San Diego time on the right.
Mexico City to San Diego: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Mexico City. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Mexico City | San Diego | 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 | Mexico City 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 Diego 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 Mexico City – San Diego Time Difference
Mexico City runs on America/Mexico_City, currently CST (UTC-6:00). San Diego runs on America/Los_Angeles, currently PDT (UTC-7:00). The gap of 1 hour is simply the distance between those two offsets.
San Diego observes Daylight Saving Time and Mexico City 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 Diego 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.
Mexico City today
San Diego today
Frequently Asked Questions
What is the time difference between Mexico City and San Diego?
San Diego is currently 1 hour behind Mexico City. That gap becomes 2 hours on Sunday, November 1, 2026, when San Diego changes its clocks.
How many hours behind is San Diego from Mexico City?
San Diego is 1 hour behind Mexico City. Looking at it the other way, Mexico City is 1 hour ahead of San Diego.
What time is it in San Diego when it is 9:00 AM in Mexico City?
When it is 9:00 AM in Mexico City, it is 8:00 AM in San Diego.
Is San Diego ahead of or behind Mexico City?
San Diego is 1 hour behind Mexico City. Mexico City reaches each point in the day first, so San Diego is still getting started while the Mexico City working day is finishing.
What is the best time to call between Mexico City and San Diego?
Between 10:00 AM and 5:00 PM Mexico City time, which is 9:00 AM to 4:00 PM in San Diego. Both cities are inside normal business hours during that window.
Does the time difference between Mexico City and San Diego change during the year?
Yes. San Diego observes Daylight Saving Time and Mexico City 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 Mexico City and San Diego in?
Mexico City uses the America/Mexico_City time zone, currently CST (UTC-6:00). San Diego uses America/Los_Angeles, currently PDT (UTC-7:00).