Time in BST and HDT
The time difference between British Summer Time (BST) and Hawaii–Aleutian Daylight Time (HDT) is 10 hours. Hawaii–Aleutian Daylight Time is 10 hours behind British Summer Time.
This means 9am BST is 11pm HDT (previous day) and 5pm BST is 7am HDT.
British Summer Time
- The current local time in BST is 2:11 pm (July 3, 2026)
- BST time zone offset is UTC+01:00
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 10:11 pm (July 3, 2026)
- HDT time zone offset is UTC-09:00
How to convert British Summer Time to Hawaii–Aleutian Daylight Time?
Subtract 10 hours from British Summer Time to get Hawaii–Aleutian Daylight Time.
Time in BST
00:00
Time in HDT
00:00
Use the slider above to convert British Summer Time to Hawaii–Aleutian Daylight Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| BST | HDT |
|---|---|
| 12am | 2pm |
| 1am | 3pm |
| 2am | 4pm |
| 3am | 5pm |
| 4am | 6pm |
| 5am | 7pm |
| 6am | 8pm |
| 7am | 9pm |
| 8am | 10pm |
| 9am | 11pm |
| 10am | 12am |
| 11am | 1am |
| 12pm | 2am |
| 1pm | 3am |
| 2pm | 4am |
| 3pm | 5am |
| 4pm | 6am |
| 5pm | 7am |
| 6pm | 8am |
| 7pm | 9am |
| 8pm | 10am |
| 9pm | 11am |
| 10pm | 12pm |
| 11pm | 1pm |