What is HST in BST?
British Time is 11 hours ahead
Hawaii Standard Time is on UTC−10:00 and British Time is on UTC+1:00 right now. British Time is on daylight saving, so its clocks read BST. The gap changes during the year — see below.
- Time in Honolulu
- 4:56 pm
- Time in London
- 3:56 am
- Difference
- +11 h
- Next clock change
- October 25, 2026
Convert a time
BST — British Time
3:00 am
Wed, the next day
When the difference changes
Hawaii Standard Time and British Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – October 25, 2026British Time is 11 hours ahead
- October 25, 2026 – March 28, 2027British Time is 10 hours ahead
- March 28, 2027 – onwardsBritish Time is 11 hours ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
British Time
Clocks go back one hour at 2am local time, becoming GMT.
HST to BST conversion table
Every hour of Tuesday, September 22, 2026, converted from Hawaii Standard Time to British Time. 11 of the 24 hours fall on a different calendar day in London, which is marked.
- 12:00 am HST
- 11:00 am BST
- 1:00 am HST
- 12:00 pm BST
- 2:00 am HST
- 1:00 pm BST
- 3:00 am HST
- 2:00 pm BST
- 4:00 am HST
- 3:00 pm BST
- 5:00 am HST
- 4:00 pm BST
- 6:00 am HST
- 5:00 pm BST
- 7:00 am HST
- 6:00 pm BST
- 8:00 am HST
- 7:00 pm BST
- 9:00 am HST
- 8:00 pm BST
- 10:00 am HST
- 9:00 pm BST
- 11:00 am HST
- 10:00 pm BST
- 12:00 pm HST
- 11:00 pm BST
- 1:00 pm HST
- 12:00 am BST+1 day
- 2:00 pm HST
- 1:00 am BST+1 day
- 3:00 pm HST
- 2:00 am BST+1 day
- 4:00 pm HST
- 3:00 am BST+1 day
- 5:00 pm HST
- 4:00 am BST+1 day
- 6:00 pm HST
- 5:00 am BST+1 day
- 7:00 pm HST
- 6:00 am BST+1 day
- 8:00 pm HST
- 7:00 am BST+1 day
- 9:00 pm HST
- 8:00 am BST+1 day
- 10:00 pm HST
- 9:00 am BST+1 day
- 11:00 pm HST
- 10:00 am BST+1 day
Scheduling between the two
There is no overlap between a nine-to-six working day in Honolulu and one in London — the gap is too wide. A call has to sit early or late for one side. Early morning in Honolulu is the usual compromise, since that is late afternoon or evening in London.
A note on BST: it can also mean Bangladesh Standard Time (UTC+6). This page means British Summer Time.
Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving
British Time (BST) is used in the whole United Kingdom. In winter the UK is on GMT; from late March to late October it is on BST, an hour ahead.