London to San Juan Time Difference
🇬🇧 London is currently 4 hours behind of 🇵🇷 San Juan. This difference varies between 5h and 4h due to Daylight Saving Time.
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Atin 🇬🇧 London→it will be—in 🇵🇷 San Juan
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Difference
-4h
Business overlap
5h
Distance
6,758 km
Approx. flight
8h
Hour-by-Hour: London to San Juan
| 🇬🇧 London | 🇵🇷 San Juan | Note |
|---|---|---|
| 12:00 AM | 8:00 PM(prev day) | Previous day |
| 1:00 AM | 9:00 PM(prev day) | Previous day |
| 2:00 AM | 10:00 PM(prev day) | Previous day |
| 3:00 AM | 11:00 PM(prev day) | Previous day |
| 4:00 AM | 12:00 AM | |
| 5:00 AM | 1:00 AM | |
| 6:00 AM | 2:00 AM | |
| 7:00 AM | 3:00 AM | |
| 8:00 AM | 4:00 AM | |
| 9:00 AM | 5:00 AM | |
| 10:00 AM | 6:00 AM | |
| 11:00 AM | 7:00 AM | |
| 12:00 PM | 8:00 AM | |
| 1:00 PM | 9:00 AM | |
| 2:00 PM | 10:00 AM | |
| 3:00 PM | 11:00 AM | |
| 4:00 PM | 12:00 PM | |
| 5:00 PM | 1:00 PM | |
| 6:00 PM | 2:00 PM | |
| 7:00 PM | 3:00 PM | |
| 8:00 PM | 4:00 PM | |
| 9:00 PM | 5:00 PM | |
| 10:00 PM | 6:00 PM | |
| 11:00 PM | 7:00 PM |
Daylight Saving Time (DST)
London observes Daylight Saving Time, while San Juan does not. This causes the time difference to shift between 5 hours behind and 4 hours behind depending on the season. Currently, London is 4 hours behind relative to San Juan.
Min difference
5h
Max difference
4h
Best Meeting Times
There are 5 overlapping business hours between London and San Juan (9 AM – 6 PM in each city).
🇬🇧 London
1:00 PM – 6:00 PM
🇵🇷 San Juan
9:00 AM – 2:00 PM
Frequently Asked Questions
What is the time difference between London and San Juan?
The time difference between London and San Juan is currently 4 hours behind. London uses GMT (UTC+0), while San Juan uses AST (UTC-4). This difference varies seasonally due to Daylight Saving Time, ranging from 5 hours behind to 4 hours behind.
When it's noon in London, what time is it in San Juan?
When it's 12:00 PM (noon) in London, it is 8:00 AM in San Juan. Use our calculator above to convert any other time.
Does the time difference between London and San Juan change?
Yes, the time difference changes throughout the year. Because London observes Daylight Saving Time, the offset shifts between 5 hours behind and 4 hours behind at different times of the year.
What are the best times to schedule a call between London and San Juan?
The best time to call is between 1:00 PM and 6:00 PM in London (which is 9:00 AM – 2:00 PM in San Juan). This 5-hour window falls within business hours in both cities.
Is London ahead or behind San Juan?
London is currently 4 hours ahead of San Juan.
What time zone is London in?
London is in the Europe/London time zone, currently using GMT (UTC+0). London observes Daylight Saving Time, so the offset changes twice a year.
What time is midnight in London in San Juan?
When it is midnight (12:00 AM) in London, it is 8:00 PM in San Juan.