The short answer
12pm in British Summer Time is 1am in Hawaii Time.
British Summer Time is 11 hours ahead of Hawaii Time. It lands deep outside working hours in Hawaii Time — see the best time to meet below for a friendlier slot.
British Summer Time☀
12pm
Hawaii Time☾
1am
Right now
9:01amBST · UTC+01:00 · Mon, Jun 22
10:01pmHST · UTC-10:00 · Sun, Jun 21
Read across to convert
British Summer Time
BST · UTC+01:00
Hawaii Time
HST · UTC-10:00
Pinned12pmBritish Summer Time=1amHawaii Time
12amMon
1pmSun ·−1d
WORK1am
2pmSun ·−1d
WORK2am
3pmSun ·−1d
WORK3am
4pmSun ·−1d
WORK4am
5pmSun ·−1d
5am
6pmSun ·−1d
6am
7pmSun ·−1d
7am
8pmSun ·−1d
8am
9pmSun ·−1d
NOW
9am
WORK10pmSun ·−1d
10am
WORK11pmSun ·−1d
11am
WORK12amMon
PINNED
12pm
WORK1am
1pm
WORK2am
2pm
WORK3am
3pm
WORK4am
4pm
WORK5am
5pm
6am
6pm
7am
7pm
8am
8pm
9am
WORK9pm
10am
WORK10pm
11am
WORK11pm
12pm
WORKdaylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
British Summer Time
6pm–7pm
Hawaii Time
7am–8am
Popular conversions
Quick reference.
9amBritish Summer Time=10pmHawaii Time · prev day
12pmBritish Summer Time=1amHawaii Time
3pmBritish Summer Time=4amHawaii Time
5pmBritish Summer Time=6amHawaii Time
9pmBritish Summer Time=10amHawaii Time
In context
What each side covers.
British Summer Time
9:01amBST · UTC+01:00
Cities on this clock
Hawaii Time
10:01pmHST · UTC-10:00
US
Did you mean…? “BST” is shared by several places. This page shows British Summer Time (UK) — or switch to Bangladesh Standard Time.
Related converters
Other popular pairs.
Pacific Time
1:01am
India Standard Time
1:31pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
4:01am
Central European Time
10:01am
Eastern Time to Central Europe6 hours behind
India Standard Time
1:31pm
Eastern Standard Time
4:01am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
9:01am
India Standard Time
1:31pm
London to India4 hours 30 minutes behind
Pacific Standard Time
1:01am
Eastern Standard Time
4:01am
Pacific to Eastern Time3 hours behind
Central European Time
10:01am
India Standard Time
1:31pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between British Summer Time and Hawaii Time. Can't find what you need? Email [email protected].
- What is the time difference between British Summer Time and Hawaii Time?
- British Summer Time is 11 hours ahead of Hawaii Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 12pm in British Summer Time, what time is it in Hawaii Time?
- 12pm in British Summer Time is 1am in Hawaii Time. It lands deep outside working hours in Hawaii Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between British Summer Time and Hawaii Time?
- There's no comfortable 9-to-5 overlap between British Summer Time and Hawaii Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — BST and HST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.