San José to London Time Difference
London is 7 hours ahead of San José. When it's 08:20:17 AM in San José, it's 03:20:17 PM in London.
How Many Hours Ahead Is London From San José?
London is 7 hours ahead of San José. So San José is 7 hours behind London 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 4:00 PM in London. The gap is not fixed all year: it becomes 6 hours on Sunday, October 25, 2026, when London changes its clocks.
Best Time to Call San José and London
Both cities are inside normal business hours between 9:00 AM and 10:00 AM in San José — that's 4:00 PM to 5:00 PM in London. That's a 1-hour window, so a call fits comfortably in either side's working day.
both at work San José only London 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 London.
Common Times Converted
San José time on the left, London time on the right.
San José to London: 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 | London | Working hours |
|---|---|---|
| 12:00 AM | 7:00 AM | — |
| 1:00 AM | 8:00 AM | — |
| 2:00 AM | 9:00 AM | London only |
| 3:00 AM | 10:00 AM | London only |
| 4:00 AM | 11:00 AM | London only |
| 5:00 AM | 12:00 PM | London only |
| 6:00 AM | 1:00 PM | London only |
| 7:00 AM | 2:00 PM | London only |
| 8:00 AM | 3:00 PM | London only |
| 9:00 AM | 4:00 PM | Both cities |
| 10:00 AM | 5:00 PM | San José only |
| 11:00 AM | 6:00 PM | San José only |
| 12:00 PM | 7:00 PM | San José only |
| 1:00 PM | 8:00 PM | San José only |
| 2:00 PM | 9:00 PM | San José only |
| 3:00 PM | 10:00 PM | San José only |
| 4:00 PM | 11:00 PM | San José only |
| 5:00 PM | 12:00 AM next day | — |
| 6:00 PM | 1:00 AM next day | — |
| 7:00 PM | 2:00 AM next day | — |
| 8:00 PM | 3:00 AM next day | — |
| 9:00 PM | 4:00 AM next day | — |
| 10:00 PM | 5:00 AM next day | — |
| 11:00 PM | 6:00 AM next day | — |
Understanding the San José – London Time Difference
San José runs on America/Costa_Rica, currently CST (UTC-6:00). London runs on Europe/London, currently BST (UTC+1:00). The gap of 7 hours is simply the distance between those two offsets.
London 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, October 25, 2026, when London adjusts its clocks and the difference becomes 6 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in the United Kingdom.
San José today
London today
Frequently Asked Questions
What is the time difference between San José and London?
London is currently 7 hours ahead of San José. That gap becomes 6 hours on Sunday, October 25, 2026, when London changes its clocks.
How many hours ahead is London from San José?
London is 7 hours ahead of San José. Looking at it the other way, San José is 7 hours behind London.
What time is it in London when it is 9:00 AM in San José?
When it is 9:00 AM in San José, it is 4:00 PM in London.
Is London ahead of or behind San José?
London is 7 hours ahead of San José. London reaches each point in the day first, so its working day is already finishing while San José is still getting started.
What is the best time to call between San José and London?
Between 9:00 AM and 10:00 AM San José time, which is 4:00 PM to 5:00 PM in London. Both cities are inside normal business hours during that window.
Does the time difference between San José and London change during the year?
Yes. London observes Daylight Saving Time and San José does not, so the gap between them shifts during the year. It changes to 6 hours on Sunday, October 25, 2026.
What time zones are San José and London in?
San José uses the America/Costa_Rica time zone, currently CST (UTC-6:00). London uses Europe/London, currently BST (UTC+1:00).