What is the time difference between Reykjavík and London?

London is 1 hour ahead of Reykjavík. 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 London from Reykjavík?

Between 09:00–17:00 in Reykjavík, which is 10:00–18:00 in London. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does Reykjavík observe daylight saving time?

No. Reykjavík stays on UTC+0 all year, so its clocks never move.

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.

If it is midday in Reykjavík, what time is it in London?

It is 13:00 in London, 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 Reykjavík and London use?

Reykjavík uses Atlantic/Reykjavik, currently UTC+0 (GMT), and London uses Europe/London, currently UTC+1 (BST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert Reykjavík time to London time

London is 1 hour ahead of Reykjavík right now, so midday in Reykjavík lands in the afternoon in London.

Convert a time

From

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 Reykjavík, and what the clock reads in London at that same moment.

Reykjavík	London
00:00	01:00
01:00	02:00
02:00	03:00
03:00	04:00
04:00	05:00
05:00	06:00
06:00	07:00
07:00	08:00
08:00	09:00
09:00	10:00
10:00	11:00
11:00	12:00
12:00	13:00
13:00	14:00
14:00	15:00
15:00	16:00
16:00	17:00
17:00	18:00
18:00	19:00
19:00	20:00
20:00	21:00
21:00	22:00
22:00	23:00
23:00	00:00next day

Daylight saving time

London changes its clocks; Reykjavík does not. The difference between them therefore shifts by an hour twice a year.

Reykjavík

Does not observe daylight saving time

Standard: UTC+0

London

Observes daylight saving time

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

When you can actually talk

You have 8 hours of shared working time: 09:00–17:00 in Reykjavík, which is 10:00–18:00 in London.

Reykjavík 09:00–17:00London 10:00–18:00

Reference

The zone identifiers and offsets behind everything above.

	Reykjavík	London
IANA zone	Atlantic/Reykjavik	Europe/London
Abbreviation	GMT	BST
Standard offset	UTC+0	UTC+0
Daylight offset	—	UTC+1
Clock changes this year	0	2
Country	Iceland	United Kingdom

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

Common questions

What is the time difference between Reykjavík and London?: London is 1 hour ahead of Reykjavík. 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 London from Reykjavík?: Between 09:00–17:00 in Reykjavík, which is 10:00–18:00 in London. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Reykjavík observe daylight saving time?: No. Reykjavík stays on UTC+0 all year, so its clocks never move.
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.
If it is midday in Reykjavík, what time is it in London?: It is 13:00 in London, 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 Reykjavík and London use?: Reykjavík uses Atlantic/Reykjavik, currently UTC+0 (GMT), and London uses Europe/London, currently UTC+1 (BST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.