London to San Juan
Converting a fixed time. Europe/London → America/Puerto_Rico · 6,758 km (4,197 miles) apart
Clocks go back 1 hour on Sunday, 25th October 2026, at 1:59 am local time (1:00 am after the change).
Clocks here do not change — this zone stays on the same offset all year.
Convert a specific time minutes work, not just whole hours
Hour by hour
| London | San Juan | 24h | Good to call? |
|---|---|---|---|
| 12am | 7pm Wed | 00:00 → 19:00 | asleep in London |
| 1am | 8pm Wed | 01:00 → 20:00 | asleep in London |
| 2am | 9pm Wed | 02:00 → 21:00 | asleep in London |
| 3am | 10pm Wed | 03:00 → 22:00 | asleep in San Juan |
| 4am now | 11pm Wed | 04:00 → 23:00 | asleep in San Juan |
| 5am | 12am | 05:00 → 00:00 | asleep in San Juan |
| 6am | 1am | 06:00 → 01:00 | asleep in San Juan |
| 7am | 2am | 07:00 → 02:00 | asleep in San Juan |
| 8am | 3am | 08:00 → 03:00 | asleep in San Juan |
| 9am | 4am | 09:00 → 04:00 | asleep in San Juan |
| 10am | 5am | 10:00 → 05:00 | asleep in San Juan |
| 11am | 6am | 11:00 → 06:00 | asleep in San Juan |
| 12pm | 7am | 12:00 → 07:00 | awake, not at work |
| 1pm | 8am | 13:00 → 08:00 | awake, not at work |
| 2pm | 9am | 14:00 → 09:00 | both at work |
| 3pm | 10am | 15:00 → 10:00 | both at work |
| 4pm | 11am | 16:00 → 11:00 | both at work |
| 5pm | 12pm | 17:00 → 12:00 | awake, not at work |
| 6pm | 1pm | 18:00 → 13:00 | awake, not at work |
| 7pm | 2pm | 19:00 → 14:00 | awake, not at work |
| 8pm | 3pm | 20:00 → 15:00 | awake, not at work |
| 9pm | 4pm | 21:00 → 16:00 | awake, not at work |
| 10pm | 5pm | 22:00 → 17:00 | asleep in London |
| 11pm | 6pm | 23:00 → 18:00 | asleep in London |
Call times
Both places are at work between 2pm and 17:00 in London — 9am to 11am at the other end.
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Questions people ask
What time is it in San Juan when it is 5:00 pm in London?
12:00 pm in San Juan the same day.
How many hours ahead is San Juan of London?
San Juan is 5 hours behind London. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between London and San Juan?
Both places are at work between 2pm and 17:00 in London — 9am to 11am at the other end.
When does the difference between London and San Juan change?
London: Clocks go back 1 hour on Sunday, 25th October 2026, at 1:59 am local time (1:00 am after the change). San Juan does not change its clocks, so the gap shifts by an hour on that date.