London to Puerto Rico time converter

Puerto Rico is 5 hours behind London. When it is 9:00 AM in London, it is 4:00 AM in Puerto Rico.

London BST

Wednesday, October 21, 2026

Puerto Rico AST

Wednesday, October 21, 2026

London
United Kingdom
Wed, Oct 21
BSTUTC+1
Puerto Rico
Wed, Oct 21
ASTUTC-4-5h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Puerto Rico conversion table

Every hour of today in London and the matching time in Puerto Rico. Light rows are typical working hours (9:00–18:00).

LondonPuerto Rico
12:00 AM7:00 PM−1 day
1:00 AM8:00 PM−1 day
2:00 AM9:00 PM−1 day
3:00 AM10:00 PM−1 day
4:00 AM11:00 PM−1 day
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Best time to call or meet

Both sides are at work from 2:00 PM – 6:00 PM in London (9:00 AM – 1:00 PM in Puerto Rico).

Daylight saving time and the difference

The difference changes during the year because London and Puerto Rico switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -5h
  • Oct 25, 2026 – Mar 28, 2027: -4h
  • Mar 28, 2027 – Oct 21, 2027: -5h

More conversions

Puerto Rico to LondonLondon to New YorkLondon to Los AngelesLondon to ChicagoLondon to TorontoLondon to São PauloLondon to ParisLondon to BerlinLondon to MoscowLondon to DubaiLondon to New DelhiLondon to BangkokLondon to Singapore
New York to Puerto RicoLos Angeles to Puerto RicoChicago to Puerto RicoToronto to Puerto RicoSão Paulo to Puerto RicoParis to Puerto RicoBerlin to Puerto RicoMoscow to Puerto RicoDubai to Puerto RicoNew Delhi to Puerto RicoBangkok to Puerto RicoSingapore to Puerto Rico

Questions and answers

What is the time difference between London and Puerto Rico?

Puerto Rico is 5 hours behind London.

What time is it in Puerto Rico when it is 9 AM in London?

When it is 9:00 AM in London, it is 4:00 AM in Puerto Rico.

When is the best time to call Puerto Rico from London?

Both sides are at work from 2:00 PM – 6:00 PM in London (9:00 AM – 1:00 PM in Puerto Rico).

Does the time difference between London and Puerto Rico change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.