Time Difference Between Arizona Time and London
As of 31 August 2026, London is 8 hours ahead of Arizona Time. That number is not constant. Over the course of a year, because of daylight saving changes, London, United Kingdom ranges from 7 hours ahead to 8 hours ahead relative to Arizona Time, United States. The calculator below is always up to date.
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Arizona Time, United States
15:34
Mon, Aug 31, 2026
UTC-7 · MST · America/Phoenix
London, United Kingdom
+8h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
London is 8 hours ahead of Arizona Time.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Arizona Time | Monday, August 31, 2026 | MSTAmerica/Phoenix | UTC-7 | Not observed |
| London | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
Arizona Time: Most of Arizona does not observe daylight saving time, so it stays at UTC-7 all year — the same clock as Mountain Standard Time in winter, but 1 hour behind Mountain Time in summer. The Navajo Nation in Arizona is the exception and does observe it.
Hour by hour: Arizona Time to London
Every hour of today in Arizona Time and what it is in London. Highlighted rows fall inside London working hours (09:00–18:00).
| Arizona Time | 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 |
| Arizona Time | London |
|---|---|
| 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 |
Best time to call or meet
Overlapping working hours
09:00–10:00 in Arizona Time (17:00–18:00 in London)
Both places are inside 09:00–18:00 for 1 hour a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
08:00–13:00 in Arizona Time (16:00–21:00 in London)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
London puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, London is 7 hours ahead of Arizona Time — instead of 8 hours ahead, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Arizona Time and London: common questions
What is the time difference between Arizona Time and London?
As of 31 August 2026, London is 8 hours ahead of Arizona Time. The gap is not fixed: across the year, London ranges from 7 hours ahead to 8 hours ahead relative to Arizona Time, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Arizona Time, what time is it in London?
It is 05:00 PM in London, United Kingdom. Use the time field in the calculator above to check any other hour.
Is London ahead of or behind Arizona Time?
London is ahead of Arizona Time by 8 hours at the moment. In practical terms, the working day in London starts and ends earlier in Arizona Time terms.
Do Arizona Time and London observe daylight saving time?
London changes its clocks twice a year; Arizona Time does not. The difference therefore shifts by an hour when London switches: across the year, London ranges from 7 hours ahead to 8 hours ahead relative to Arizona Time.
What is the best time to call London from Arizona Time?
Working hours overlap between 09:00 and 10:00 Arizona Time time, which is 17:00 to 18:00 in London. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Arizona Time, United States (UTC-7) and London, United Kingdom (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.