AKDT to BST Converter
Convert time between Alaska Daylight Time (AKDT) and British Summer Time (BST)
Alaska Daylight Time (AKDT)
British Summer Time (BST)
Time Difference
British Summer Time (BST) is 0 hours ahead of Alaska Daylight Time (AKDT)
Select Date
Select Time
Quick Reference
| AKDT | BST |
|---|---|
| 18:00 | 03:00 |
| 20:00 | 05:00 |
| 22:00 | 07:00 |
| 00:00 | 09:00 |
| 02:00 | 11:00 |
| 04:00 | 13:00 |
| 06:00 | 15:00 |
| 08:00 | 17:00 |
| 10:00 | 19:00 |
| 12:00 | 21:00 |
| 14:00 | 23:00 |
| 16:00 | 01:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About AKDT to BST Time Conversion
Converting time between Alaska Daylight Time (AKDT) and British Summer Time (BST) bridges Anchorage and Fairbanks with London, Manchester, and the rest of the UK. AKDT is UTC-8 while BST is UTC+1, placing BST 9 hours ahead of AKDT during overlapping daylight saving periods.
This converter uses the IANA timezone database to ensure accurate calculations through DST transitions in both regions. AKDT is in effect from March to November, and BST runs from the last Sunday in March until the last Sunday in October — an almost identical window. Use this converter for scheduling meetings, planning travel, or coordinating across these regions.
Common Use Cases for AKDT to BST Conversion
Business & Work
- Scheduling meetings between Alaska-based teams and UK partners
- Coordinating project deadlines across Alaska and the United Kingdom
- Planning conference calls between Anchorage and London during shared daylight saving periods
Personal & Travel
- Planning travel itineraries between Alaska and the UK
- Coordinating with family and friends in Britain from Alaska
- Scheduling virtual events for AKDT and BST audiences
Time Zone Information
Alaska Daylight Time (AKDT)
- UTC Offset: UTC-8
- IANA Timezone: America/Anchorage
- Daylight Saving: Second Sunday in March to First Sunday in November
- Major Cities: Anchorage, Fairbanks, Juneau, Sitka
- Coverage: Most of Alaska during daylight saving period
British Summer Time (BST)
- UTC Offset: UTC+1 (UTC+0 during GMT)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Manchester, Birmingham, Edinburgh, Glasgow, Cardiff
- Coverage: United Kingdom during daylight saving period
Quick Reference: AKDT to BST
Remember: BST is always 9 hours ahead of AKDT during overlapping daylight saving periods
Frequently Asked Questions
What is the time difference between AKDT and BST?
Alaska Daylight Time (AKDT) is UTC-8, while British Summer Time (BST) is UTC+1. BST is 9 hours ahead of AKDT. When it is 12:00 PM in Anchorage, it is 9:00 PM in London.
When does this AKDT to BST conversion apply?
AKDT runs from the second Sunday in March to the first Sunday in November. BST runs from the last Sunday in March until the last Sunday in October. The two windows overlap for most of the northern summer.
How does the time difference change throughout the year?
When Alaska reverts to AKST (UTC-9) in November and the UK reverts to GMT (UTC+0), the offset stays at 9 hours. Around DST transitions in late March and late October the offsets briefly diverge by an hour.
What are the best times for AKDT-BST business calls?
Morning in Anchorage (9:00 AM AKDT) is 6:00 PM in London — a strong morning for AKDT and a workable evening for BST. Most live overlap is at the edges of each working day; expect to schedule calls early or late.
Which countries/regions use BST timezone?
BST is observed throughout the United Kingdom, including London, Manchester, Birmingham, Edinburgh, Glasgow, and Cardiff. It is the daylight saving variant of Greenwich Mean Time (GMT).
Which countries/regions use AKDT timezone?
AKDT covers most of Alaska during daylight saving, including Anchorage, Fairbanks, Juneau, and Sitka. The Aleutian Islands use Hawaii-Aleutian Time and follow a different rule set.
Pro Tips
- • BST is 9 hours ahead of AKDT — add 9 hours to an Anchorage time to get the London time.
- • AKDT to BST conversions usually stay on the same calendar day, except for late afternoon Alaska times that cross into the next day in London.
- • Best meeting window: 8:00–10:00 AM AKDT overlaps with 5:00–7:00 PM BST.
- • When Alaska switches to AKST in November and the UK reverts to GMT, the 9-hour offset is preserved.
- • Use IANA identifiers (America/Anchorage and Europe/London) in calendar tools to handle DST transitions automatically.
- • In late March and late October, DST transitions in either region can briefly change the offset by an hour. Confirm before scheduling around those dates.