What is the time difference between London and Warsaw?

Warsaw is 1 hour ahead of 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 Warsaw from London?

Between 09:00–17:00 in London, which is 10:00–18:00 in Warsaw. 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 Warsaw observe daylight saving time?

Yes. Warsaw runs on UTC+1 in winter and UTC+2 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.

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

It is 13:00 in Warsaw, 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 Warsaw use?

London uses Europe/London, currently UTC+1 (BST), and Warsaw uses Europe/Warsaw, currently UTC+2 (CEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert London time to Warsaw time

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

Convert a time

From

Date

Time

Converted time

—

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

The whole day mapped across: read down the left for London, across for Warsaw.

London	Warsaw
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 and Warsaw 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

Warsaw

Observes daylight saving time

Standard: UTC+1
Daylight: UTC+2
Next change: 2026-10-25 −60m

When you can actually talk

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

London 09:00–17:00Warsaw 10:00–18:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	London	Warsaw
IANA zone	Europe/London	Europe/Warsaw
Abbreviation	BST	CEST
Standard offset	UTC+0	UTC+1
Daylight offset	UTC+1	UTC+2
Clock changes this year	2	2
Country	United Kingdom	Poland

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

Common questions

What is the time difference between London and Warsaw?: Warsaw is 1 hour ahead of 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 Warsaw from London?: Between 09:00–17:00 in London, which is 10:00–18:00 in Warsaw. 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 Warsaw observe daylight saving time?: Yes. Warsaw runs on UTC+1 in winter and UTC+2 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.
If it is midday in London, what time is it in Warsaw?: It is 13:00 in Warsaw, 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 Warsaw use?: London uses Europe/London, currently UTC+1 (BST), and Warsaw uses Europe/Warsaw, currently UTC+2 (CEST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.