Time Difference Between Hawaii Time and London
As of 31 August 2026, London is 11 hours ahead of Hawaii Time. That number is not constant. Over the course of a year, because of daylight saving changes, London, United Kingdom ranges from 10 hours ahead to 11 hours ahead relative to Hawaii Time, United States. The calculator below is always up to date.
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Hawaii Time, United States
12:34
Mon, Aug 31, 2026
UTC-10 · HST · Pacific/Honolulu
London, United Kingdom
+11h23:34
Mon, Aug 31, 2026
UTC+1 · Europe/London
London is 11 hours ahead of Hawaii Time.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Hawaii Time | Monday, August 31, 2026 | HSTPacific/Honolulu | UTC-10 | Not observed |
| London | Monday, August 31, 2026 | Europe/London | UTC+1 | Active now |
Hawaii Time: Covers Hawaii. Stays at UTC-10 all year — Hawaii does not observe daylight saving time.
Hour by hour: Hawaii Time to London
Every hour of today in Hawaii Time and what it is in London. Highlighted rows fall inside London working hours (09:00–18:00).
| Hawaii Time | London |
|---|---|
| 00:00 | 11:00 |
| 01:00 | 12:00 |
| 02:00 | 13:00 |
| 03:00 | 14:00 |
| 04:00 | 15:00 |
| 05:00 | 16:00 |
| 06:00 | 17:00 |
| 07:00 | 18:00 |
| 08:00 | 19:00 |
| 09:00 | 20:00 |
| 10:00 | 21:00 |
| 11:00 | 22:00 |
| Hawaii Time | London |
|---|---|
| 12:00 | 23:00 |
| 13:00 | 00:00next day |
| 14:00 | 01:00next day |
| 15:00 | 02:00next day |
| 16:00 | 03:00next day |
| 17:00 | 04:00next day |
| 18:00 | 05:00next day |
| 19:00 | 06:00next day |
| 20:00 | 07:00next day |
| 21:00 | 08:00next day |
| 22:00 | 09:00next day |
| 23:00 | 10:00next day |
Best time to call or meet
Overlapping working hours
No overlap
Standard working hours in Hawaii Time and London never overlap. Someone has to start early or finish late — the calling window below is the practical compromise.
Reasonable calling hours
08:00–10:00 in Hawaii Time (19:00–21:00 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 10 hours ahead of Hawaii Time — instead of 11 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.
Hawaii Time and London: common questions
What is the time difference between Hawaii Time and London?
As of 31 August 2026, London is 11 hours ahead of Hawaii Time. The gap is not fixed: across the year, London ranges from 10 hours ahead to 11 hours ahead relative to Hawaii Time, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Hawaii Time, what time is it in London?
It is 08:00 PM in London, United Kingdom. Use the time field in the calculator above to check any other hour.
Is London ahead of or behind Hawaii Time?
London is ahead of Hawaii Time by 11 hours at the moment. In practical terms, the working day in London starts and ends earlier in Hawaii Time terms.
Do Hawaii Time and London observe daylight saving time?
London changes its clocks twice a year; Hawaii Time does not. The difference therefore shifts by an hour when London switches: across the year, London ranges from 10 hours ahead to 11 hours ahead relative to Hawaii Time.
What is the best time to call London from Hawaii Time?
Standard working hours in Hawaii Time and London do not overlap at all, so one side has to take the call outside office hours. Early morning in Hawaii Time or late evening is usually the least disruptive option.
Related comparisons
Local dates shown for Hawaii Time, United States (UTC-10) and London, United Kingdom (UTC+1) were generated on Monday, August 31, 2026 UTC and refresh in your browser.