What is the time difference between London and St John's?

St John's is 3 hours 30 minutes behind London. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call St John's from London?

Between 12:30–18:00 in London, which is 09:00–14:30 in St John's. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does London observe daylight saving time?

Yes. London runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.

Does St John's observe daylight saving time?

Yes. St John's runs on UTC-3:30 in winter and UTC-2:30 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.

If it is midday in London, what time is it in St John's?

It is 08:30 in St John's, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do London and St John's use?

London uses Europe/London, currently UTC+1 (BST), and St John's uses America/St_Johns, currently UTC-2:30. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert London time to St John's time

St John's is 3 hours 30 minutes behind London right now, so midday in London lands in the morning in St John's.

Convert a time

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Date

Time

Converted time

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The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in London, and what the clock reads in St John's at that same moment.

London	St John's
00:00	20:30previous day
01:00	21:30previous day
02:00	22:30previous day
03:00	23:30previous day
04:00	00:30
05:00	01:30
06:00	02:30
07:00	03:30
08:00	04:30
09:00	05:30
10:00	06:30
11:00	07:30
12:00	08:30
13:00	09:30
14:00	10:30
15:00	11:30
16:00	12:30
17:00	13:30
18:00	14:30
19:00	15:30
20:00	16:30
21:00	17:30
22:00	18:30
23:00	19:30

Daylight saving time

London and St John's both observe daylight saving. Where their change dates differ, so does the gap between them for the weeks in between.

London

Observes daylight saving time

Standard: UTC+0
Daylight: UTC+1
Next change: 2026-10-25 −60m

St John's

Observes daylight saving time

Standard: UTC-3:30
Daylight: UTC-2:30
Next change: 2026-11-01 −60m

When you can actually talk

The window is 5 hours 30 minutes wide — 12:30–18:00 in London, 09:00–14:30 in St John's.

London 12:30–18:00St John's 09:00–14:30

Reference

The zone identifiers and offsets behind everything above.

	London	St John's
IANA zone	Europe/London	America/St_Johns
Abbreviation	BST	UTC-2:30
Standard offset	UTC+0	UTC-3:30
Daylight offset	UTC+1	UTC-2:30
Clock changes this year	2	2
Country	United Kingdom	Canada

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between London and St John's?: St John's is 3 hours 30 minutes behind London. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call St John's from London?: Between 12:30–18:00 in London, which is 09:00–14:30 in St John's. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does London observe daylight saving time?: Yes. London runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.
Does St John's observe daylight saving time?: Yes. St John's runs on UTC-3:30 in winter and UTC-2:30 in summer. The next change is on 2026-11-01, when clocks go back by 60 minutes.
If it is midday in London, what time is it in St John's?: It is 08:30 in St John's, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do London and St John's use?: London uses Europe/London, currently UTC+1 (BST), and St John's uses America/St_Johns, currently UTC-2:30. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.