What is the time difference between Phoenix and London?

London is 8 hours ahead of Phoenix. 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 Phoenix?

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

Does Phoenix observe daylight saving time?

No. Phoenix stays on UTC-7 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 Phoenix, what time is it in London?

It is 20:00 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 Phoenix and London use?

Phoenix uses America/Phoenix, currently UTC-7 (MST), 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 Phoenix time to London time

Right now London runs 8 hours ahead of Phoenix. That gap is not fixed: it moves when either city changes its clocks.

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

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

Daylight saving time

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

Phoenix

Does not observe daylight saving time

Standard: UTC-7

London

Observes daylight saving time

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

When you can actually talk

You have 1 hour of shared working time: 09:00–10:00 in Phoenix, which is 17:00–18:00 in London.

Phoenix 09:00–10:00London 17:00–18:00

Reference

The zone identifiers and offsets behind everything above.

	Phoenix	London
IANA zone	America/Phoenix	Europe/London
Abbreviation	MST	BST
Standard offset	UTC-7	UTC+0
Daylight offset	—	UTC+1
Clock changes this year	0	2
Country	United States	United Kingdom

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

Common questions

What is the time difference between Phoenix and London?: London is 8 hours ahead of Phoenix. 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 Phoenix?: Between 09:00–10:00 in Phoenix, which is 17:00–18:00 in London. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does Phoenix observe daylight saving time?: No. Phoenix stays on UTC-7 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 Phoenix, what time is it in London?: It is 20:00 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 Phoenix and London use?: Phoenix uses America/Phoenix, currently UTC-7 (MST), and London uses Europe/London, currently UTC+1 (BST). Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.