Time Difference Between United Kingdom and Hawaii Time
As of 31 August 2026, Hawaii Time is 11 hours behind United Kingdom. That number is not constant. Over the course of a year, because of daylight saving changes, Hawaii Time, United States ranges from 11 hours behind to 10 hours behind relative to London, United Kingdom. The calculator below is always up to date.
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London, United Kingdom
23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
Hawaii Time, United States
-11h12:34
Mon, Aug 31, 2026
UTC-10 · HST · Pacific/Honolulu
Hawaii Time is 11 hours behind United Kingdom.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| United Kingdom | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
| Hawaii Time | Monday, August 31, 2026 | HSTPacific/Honolulu | UTC-10 | Not observed |
Hawaii Time: Covers Hawaii. Stays at UTC-10 all year — Hawaii does not observe daylight saving time.
Hour by hour: United Kingdom to Hawaii Time
Every hour of today in United Kingdom and what it is in Hawaii Time. Highlighted rows fall inside Hawaii Time working hours (09:00–18:00).
| United Kingdom | Hawaii Time |
|---|---|
| 00:00 | 13:00prev day |
| 01:00 | 14:00prev day |
| 02:00 | 15:00prev day |
| 03:00 | 16:00prev day |
| 04:00 | 17:00prev day |
| 05:00 | 18:00prev day |
| 06:00 | 19:00prev day |
| 07:00 | 20:00prev day |
| 08:00 | 21:00prev day |
| 09:00 | 22:00prev day |
| 10:00 | 23:00prev day |
| 11:00 | 00:00 |
| United Kingdom | Hawaii Time |
|---|---|
| 12:00 | 01:00 |
| 13:00 | 02:00 |
| 14:00 | 03:00 |
| 15:00 | 04:00 |
| 16:00 | 05:00 |
| 17:00 | 06:00 |
| 18:00 | 07:00 |
| 19:00 | 08:00 |
| 20:00 | 09:00 |
| 21:00 | 10:00 |
| 22:00 | 11:00 |
| 23:00 | 12:00 |
Best time to call or meet
Overlapping working hours
No overlap
Standard working hours in United Kingdom and Hawaii Time never overlap. Someone has to start early or finish late — the calling window below is the practical compromise.
Reasonable calling hours
19:00–21:00 in United Kingdom (08:00–10:00 in Hawaii Time)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
United Kingdom puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, Hawaii Time is 10 hours behind United Kingdom — instead of 11 hours behind, 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.
United Kingdom and Hawaii Time: common questions
What is the time difference between United Kingdom and Hawaii Time?
As of 31 August 2026, Hawaii Time is 11 hours behind United Kingdom. The gap is not fixed: across the year, Hawaii Time ranges from 11 hours behind to 10 hours behind relative to United Kingdom, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in United Kingdom, what time is it in Hawaii Time?
It is 10:00 PM in Hawaii Time, United States. Use the time field in the calculator above to check any other hour.
Is Hawaii Time ahead of or behind United Kingdom?
Hawaii Time is behind United Kingdom by 11 hours at the moment. In practical terms, the working day in Hawaii Time starts and ends later in United Kingdom terms.
Do United Kingdom and Hawaii Time observe daylight saving time?
United Kingdom changes its clocks twice a year; Hawaii Time does not. The difference therefore shifts by an hour when United Kingdom switches: across the year, Hawaii Time ranges from 11 hours behind to 10 hours behind relative to United Kingdom.
What is the best time to call Hawaii Time from United Kingdom?
Standard working hours in United Kingdom and Hawaii Time do not overlap at all, so one side has to take the call outside office hours. Early morning in United Kingdom or late evening is usually the least disruptive option.
Related comparisons
Local dates shown for London, United Kingdom (UTC+1) and Hawaii Time, United States (UTC-10) were generated on Monday, August 31, 2026 UTC and refresh in your browser.