San José to San Diego Time Difference
San Diego is 1 hour behind San José. When it's 08:20:19 AM in San José, it's 07:20:19 AM in San Diego.
How Many Hours Behind Is San Diego From San José?
San Diego is 1 hour behind San José. So San José 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 San José 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 San José and San Diego
Both cities are inside normal business hours between 10:00 AM and 5:00 PM in San José — 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 San José only San Diego only neither — hours shown along the strip are San José local time.
Convert a Specific Time
Pick any date and time in San José to see the exact equivalent in San Diego.
Common Times Converted
San José time on the left, San Diego time on the right.
San José to San Diego: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in San José. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| San José | 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 | San José 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 San José – San Diego Time Difference
San José runs on America/Costa_Rica, 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 San José 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 the United States.
San José today
San Diego today
Frequently Asked Questions
What is the time difference between San José and San Diego?
San Diego is currently 1 hour behind San José. That gap becomes 2 hours on Sunday, November 1, 2026, when San Diego changes its clocks.
How many hours behind is San Diego from San José?
San Diego is 1 hour behind San José. Looking at it the other way, San José is 1 hour ahead of San Diego.
What time is it in San Diego when it is 9:00 AM in San José?
When it is 9:00 AM in San José, it is 8:00 AM in San Diego.
Is San Diego ahead of or behind San José?
San Diego is 1 hour behind San José. San José reaches each point in the day first, so San Diego is still getting started while the San José working day is finishing.
What is the best time to call between San José and San Diego?
Between 10:00 AM and 5:00 PM San José 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 San José and San Diego change during the year?
Yes. San Diego observes Daylight Saving Time and San José 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 San José and San Diego in?
San José uses the America/Costa_Rica time zone, currently CST (UTC-6:00). San Diego uses America/Los_Angeles, currently PDT (UTC-7:00).