BST to HST Converter
Understanding BST and HST Time Zones
British Summer Time (BST)
British Summer Time is observed in undefined and uses the offset UTC+1. Major cities in this time zone include London, Edinburgh, Manchester. This time zone covers parts of Europe and/or Africa, home to major financial and cultural centers.
Hawaii Standard Time (HST)
Hawaii Standard Time operates at UTC-10, covering undefined. Key cities include Honolulu, Maui. The 11-hour backward offset from BST means that when professionals in London start their workday at 9:00 AM, it is already 10:00 PM in Honolulu.
BST is also commonly referred to as UK summer time, London summer time, England time. HST is also known as Hawaii Time, Honolulu time, Hawaiian time. So if you are searching for UK summer time to Hawaii Time, this is the same conversion as BST to HST.
Complete BST to HST Conversion Table
The table below shows every two-hour increment converted from British Summer Time to Hawaii Standard Time. Business hours (9 AM – 5 PM) are highlighted for easy scheduling reference.
| BST (British Summer Time) | HST (Hawaii Standard Time) |
|---|---|
| 12:00 AM (00:00) | 1:00 PM (13:00) (previous day) |
| 2:00 AM (02:00) | 3:00 PM (15:00) (previous day) |
| 4:00 AM (04:00) | 5:00 PM (17:00) (previous day) |
| 6:00 AM (06:00) | 7:00 PM (19:00) (previous day) |
| 8:00 AM (08:00) | 9:00 PM (21:00) (previous day) |
| 10:00 AM (10:00) | 11:00 PM (23:00) (previous day) |
| 12:00 PM (12:00) | 1:00 AM (01:00) |
| 2:00 PM (14:00) | 3:00 AM (03:00) |
| 4:00 PM (16:00) | 5:00 AM (05:00) |
| 6:00 PM (18:00) | 7:00 AM (07:00) |
| 8:00 PM (20:00) | 9:00 AM (09:00) |
| 10:00 PM (22:00) | 11:00 AM (11:00) |
Times shown in 12-hour and 24-hour format. Last updated 2026-03-09.
Scheduling Between BST and HST
Remote teams spanning London and Honolulu often adopt asynchronous practices to bridge the 11-hour gap. Tools like Slack, Loom, and Notion reduce the need for real-time overlap while keeping projects moving forward.
The large 11-hour gap between BST and HST means that finding overlapping working hours requires compromise from at least one side. Consider adopting asynchronous workflows — recorded video updates, shared documents, and time-zone-aware project management tools — to supplement the limited real-time overlap.
Travel Between London and Honolulu
When arriving in Honolulu from London, immediately set all devices to local time. Exposure to natural daylight at the destination helps reset your circadian rhythm. Westbound travelers should seek afternoon light.
Medical experts recommend allowing approximately one day of adjustment per hour of time difference. For the 11-hour shift between BST and HST, plan for roughly one week of gradual adjustment for optimal performance.
Daylight Saving Time Considerations
Keep in mind that DST transition dates differ between regions. The US changes clocks in March and November, Europe in March and October, and Australia in April and October. This can cause temporary shifts in conversion results.
For the BST to HST conversion specifically: BST (UTC+1) observes DST, while HST (UTC-10) does not observe DST. This means the offset between them changes by one hour seasonally — the usual 11-hour gap becomes 10 or 12 hours during DST transitions.
Related Time Zone Conversions
References & Resources
Frequently Asked Questions
BST (British Summer Time) is 11 hours ahead of HST (Hawaii Standard Time). BST is UTC+1 and HST is UTC-10.
When it is 12:00 PM (noon) in BST, it is 1:00 AM in HST.
The best overlap for business hours is approximately 10:00 PM to 6:00 AM HST, which corresponds to 9:00 AM to 5:00 PM in BST. Given the large gap, consider alternating between early and late meeting times.
Keep in mind that DST transition dates differ between regions. The US changes clocks in March and November, Europe in March and October, and Australia in April and October. This can cause temporary shifts in conversion results.