Time difference between London and San Juan
World time board
London · United KingdomUTC+01:00
03:13 AMSUN 04.10.2026
Now 03:13 AM|Live
Drag or scroll · click an hour · ◀ ▶ by hour · 3 days of range
Work–
daydawn / dusknight
- Time difference
- London is 5 hours ahead
- Changes with DST
- Yes
- Day difference
- 1 day behind
- Typical workday overlap (9am–6pm)
- 4 hours
| London | San Juan |
|---|---|
| 00:00 | 19:00-1 |
| 01:00 | 20:00-1 |
| 02:00 | 21:00-1 |
| 03:00 | 22:00-1 |
| 04:00 | 23:00-1 |
| 05:00 | 00:00 |
| 06:00 | 01:00 |
| 07:00 | 02:00 |
| 08:00 | 03:00 |
| 09:00 | 04:00 |
| 10:00 | 05:00 |
| 11:00 | 06:00 |
| 12:00 | 07:00 |
| 13:00 | 08:00 |
| 14:00 | 09:00 |
| 15:00 | 10:00 |
| 16:00 | 11:00 |
| 17:00 | 12:00 |
| 18:00 | 13:00 |
| 19:00 | 14:00 |
| 20:00 | 15:00 |
| 21:00 | 16:00 |
| 22:00 | 17:00 |
| 23:00 | 18:00 |
How the time difference changes over the next 12 months
| Period | Difference |
|---|---|
| until October 25, 2026 | London is 5 hours ahead |
| October 25, 2026 – March 28, 2027 | London is 4 hours ahead |
| from March 28, 2027 | London is 5 hours ahead |
Only London changes its clocks, so the difference shifts twice a year.
Working hours
With a 9:00 AM–6:00 PM working day in both places, the shared hours are 2:00 PM–6:00 PM in London, which is 9:00 AM–1:00 PM in San Juan (4 hours a day).
From midnight to 5:00 AM in London, it is still the previous day in San Juan.
Frequently asked questions
- What is the time difference between London and San Juan?
- London is 5 hours ahead of San Juan. October 25, 2026 – March 28, 2027: London is 4 hours ahead of San Juan.
- Does the time difference between London and San Juan change during the year?
- Yes. Only London changes its clocks, so the difference shifts twice a year. October 25, 2026 – March 28, 2027: London is 4 hours ahead of San Juan.