What is BST in HST?
Hawaii Standard Time is 11 hours behind
British Time is on UTC+1:00 and Hawaii Standard Time is on UTC−10:00 right now. British Time is on daylight saving, so its clocks read BST. The gap changes during the year — see below.
- Time in London
- 3:56 am
- Time in Honolulu
- 4:56 pm
- Difference
- −11 h
- Next clock change
- October 25, 2026
Convert a time
HST — Hawaii Standard Time
4:00 pm
Tue, the previous day
When the difference changes
British Time and Hawaii Standard 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, 2026Hawaii Standard Time is 11 hours behind
- October 25, 2026 – March 28, 2027Hawaii Standard Time is 10 hours behind
- March 28, 2027 – onwardsHawaii Standard Time is 11 hours behind
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
British Time
Clocks go back one hour at 2am local time, becoming GMT.
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
BST to HST conversion table
Every hour of Wednesday, September 23, 2026, converted from British Time to Hawaii Standard Time. 11 of the 24 hours fall on a different calendar day in Honolulu, which is marked.
- 12:00 am BST
- 1:00 pm HST−1 day
- 1:00 am BST
- 2:00 pm HST−1 day
- 2:00 am BST
- 3:00 pm HST−1 day
- 3:00 am BST
- 4:00 pm HST−1 day
- 4:00 am BST
- 5:00 pm HST−1 day
- 5:00 am BST
- 6:00 pm HST−1 day
- 6:00 am BST
- 7:00 pm HST−1 day
- 7:00 am BST
- 8:00 pm HST−1 day
- 8:00 am BST
- 9:00 pm HST−1 day
- 9:00 am BST
- 10:00 pm HST−1 day
- 10:00 am BST
- 11:00 pm HST−1 day
- 11:00 am BST
- 12:00 am HST
- 12:00 pm BST
- 1:00 am HST
- 1:00 pm BST
- 2:00 am HST
- 2:00 pm BST
- 3:00 am HST
- 3:00 pm BST
- 4:00 am HST
- 4:00 pm BST
- 5:00 am HST
- 5:00 pm BST
- 6:00 am HST
- 6:00 pm BST
- 7:00 am HST
- 7:00 pm BST
- 8:00 am HST
- 8:00 pm BST
- 9:00 am HST
- 9:00 pm BST
- 10:00 am HST
- 10:00 pm BST
- 11:00 am HST
- 11:00 pm BST
- 12:00 pm HST
Scheduling between the two
There is no overlap between a nine-to-six working day in London and one in Honolulu — the gap is too wide. A call has to sit early or late for one side. Early morning in London is the usual compromise, since that is late afternoon or evening in Honolulu.
A note on BST: it can also mean Bangladesh Standard Time (UTC+6). This page means British Summer Time.
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.
Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving