Honolulu is currently 11 hours behind London. Convert time between Honolulu and London, see the exact difference, and find the best hours for calls and meetings.
Honolulu uses Hawaii-Aleutian Standard Time. London uses British Summer Time. Honolulu time is 11 hours behind London. So, when it is 12:00 AM in Honolulu, it is 11:00 AM in London.
Common Honolulu times and their London equivalents.
| Honolulu Time | London Time |
|---|---|
| 12:00 AM Honolulu | 11:00 AM London |
| 1:00 AM Honolulu | 12:00 PM London |
| 2:00 AM Honolulu | 1:00 PM London |
| 3:00 AM Honolulu | 2:00 PM London |
| 4:00 AM Honolulu | 3:00 PM London |
| 5:00 AM Honolulu | 4:00 PM London |
| 6:00 AM Honolulu | 5:00 PM London |
| 7:00 AM Honolulu | 6:00 PM London |
| 8:00 AM Honolulu | 7:00 PM London |
| 9:00 AM Honolulu | 8:00 PM London |
| 10:00 AM Honolulu | 9:00 PM London |
| 11:00 AM Honolulu | 10:00 PM London |
| 12:00 PM Honolulu | 11:00 PM London |
| 1:00 PM Honolulu | 12:00 AM London |
| 2:00 PM Honolulu | 1:00 AM London |
| 3:00 PM Honolulu | 2:00 AM London |
| 4:00 PM Honolulu | 3:00 AM London |
| 5:00 PM Honolulu | 4:00 AM London |
| 6:00 PM Honolulu | 5:00 AM London |
| 7:00 PM Honolulu | 6:00 AM London |
| 8:00 PM Honolulu | 7:00 AM London |
| 9:00 PM Honolulu | 8:00 AM London |
| 10:00 PM Honolulu | 9:00 AM London |
| 11:00 PM Honolulu | 10:00 AM London |
Honolulu uses Hawaii-Aleutian Standard Time (HST, UTC−10). No Daylight Saving Time is observed — the offset is fixed year-round.
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
Both Honolulu and London may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | Honolulu | London | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | HST (UTC−10) | GMT (UTC+0) | 10 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | HST (UTC−10) | GMT (UTC+0) | 10 hours |
| Late Mar – Oct current | Both on summer / daylight time | HST (UTC−10) | GMT+1 (UTC+1) | 11 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | HST (UTC−10) | GMT (UTC+0) | 10 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
Honolulu is currently 11 hours behind London. Honolulu uses Hawaii-Aleutian Standard Time (UTC−10) and London uses British Summer Time (UTC+1).
Honolulu and London have no standard 9 am–6 pm business-hour overlap. Consider scheduling during early morning or late evening, or use a rotating schedule to share the inconvenience.
When it is 9:00 AM in Honolulu, it is 8:00 pm in London. Honolulu is 11 hours behind London.
When it is 5:00 PM in London, it is 6:00 am in Honolulu.
London observes Daylight Saving Time but Honolulu does not. This means the offset between the two cities changes by one hour when London transitions its clocks. Always verify the current offset when scheduling meetings near DST transition dates.