GMT to AKST Converter
Convert time between Greenwich Mean Time (GMT) and Alaska Standard Time (AKST)
Greenwich Mean Time (GMT)
Alaska Standard Time (AKST)
Time Difference
Alaska Standard Time (AKST) is 0 hours ahead of Greenwich Mean Time (GMT)
Select Date
Select Time
Quick Reference
| GMT | AKST |
|---|---|
| 02:00 | 17:00 |
| 04:00 | 19:00 |
| 06:00 | 21:00 |
| 08:00 | 23:00 |
| 10:00 | 01:00 |
| 12:00 | 03:00 |
| 14:00 | 05:00 |
| 16:00 | 07:00 |
| 18:00 | 09:00 |
| 20:00 | 11:00 |
| 22:00 | 13:00 |
| 00:00 | 15:00 |
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
Related Time Zone Conversions
About GMT to AKST Time Conversion
Converting time from Greenwich Mean Time (GMT) to Alaska Standard Time (AKST) is essential for UK to Alaska coordination. GMT is UTC+0, while AKST is UTC-9, making AKST 9 hours behind GMT.
This conversion is crucial for international business operations between the United Kingdom and Alaska, including major industries like oil and gas, research, and telecommunications. The significant time difference makes scheduling challenging, requiring careful planning for any coordination between these regions.
Common Use Cases for GMT to AKST Conversion
Business & Work
- Scheduling UK to Alaska business meetings and calls
- Coordinating London and Anchorage oil and gas operations
- Managing international research and development projects
- Planning conference calls with distributed teams
Personal & Travel
- Planning travel from UK to Alaska
- Coordinating with Alaska family and friends from UK
- Scheduling virtual events and online meetings for UK-Alaska audiences
- Arranging online classes or training sessions
Time Zone Information
Greenwich Mean Time (GMT)
- UTC Offset: UTC+0 (UTC+1 during BST)
- IANA Timezone: Europe/London
- Daylight Saving: Last Sunday in March to Last Sunday in October
- Major Cities: London, Edinburgh, Cardiff, Belfast, Dublin
- Coverage: United Kingdom and Ireland
Alaska Standard Time (AKST)
- UTC Offset: UTC-9 (UTC-8 during AKDT)
- IANA Timezone: America/Anchorage
- Daylight Saving: Second Sunday in March to First Sunday in November
- Major Cities: Anchorage, Juneau, Fairbanks, Ketchikan
- Coverage: Most of Alaska
Quick Reference: GMT to AKST
Remember: AKST is always 9 hours behind GMT. This conversion applies when Alaska observes AKST (November to March). During AKDT (March to November), the difference becomes 8 hours.
Frequently Asked Questions
What is the time difference between GMT and AKST?
Greenwich Mean Time (GMT) is UTC+0, while Alaska Standard Time (AKST) is UTC-9. This means GMT is 9 hours ahead of AKST. When it's 12:00 PM (noon) in London (GMT), it's 3:00 AM in Anchorage (AKST).
Does Alaska use AKST year-round?
No, Alaska switches between AKST (UTC-9) in winter and AKDT (Alaska Daylight Time, UTC-8) in summer. AKDT is active from the second Sunday in March to the first Sunday in November. This means when Alaska observes AKDT, the time difference to GMT becomes only 8 hours instead of 9.
Does the UK use GMT year-round?
No, the UK switches between GMT (UTC+0) in winter and BST (British Summer Time, UTC+1) in summer. BST is active from the last Sunday in March to the last Sunday in October. This means when the UK observes BST, the time difference to AKST becomes 10 hours instead of 9.
When do GMT and AKST transitions occur?
GMT and AKST transition at different times. The UK transitions on the last Sunday in March and October, while Alaska transitions on the second Sunday in March and first Sunday in November. These different transition dates mean the offset between GMT and AKST can vary throughout the year, ranging from 8 to 10 hours.
What are the best times to schedule calls between UK and Alaska?
The large 9-hour time difference makes scheduling challenging. Evening in the UK (5-7 PM GMT) overlaps with early morning in Alaska (8-10 AM AKST). For optimal business hours overlap, schedule meetings between 4-6 PM UK time (7-9 AM AKST) or early morning UK time (6-8 AM GMT, 9-11 PM AKST previous day).
Why is GMT to AKST conversion important?
GMT to AKST conversion is essential for coordinating between the United Kingdom and Alaska, which includes major cities like Anchorage, Juneau, and Fairbanks. This conversion is vital for oil and gas operations, research collaborations, and personal communications between these regions.
Pro Tips
- • The 9-hour difference is significant - 12 PM in London equals 3 AM in Alaska! This makes real-time communication very challenging.
- • UK and Alaska transition on different dates, so the offset can be 8, 9, or 10 hours depending on the time of year.
- • For better UK-Alaska meetings, consider scheduling in late UK afternoon (4-6 PM GMT) for early Alaska morning (7-9 AM AKST).
- • Remember that Alaska observes AKDT (8-hour difference) from March to November, not AKST (9-hour difference).
- • Early morning UK time (6-8 AM GMT) works as evening/night for Alaska (9-11 PM AKST previous day) - useful for international teams.
- • For 24/7 operations with UK-Alaska teams, split-shift scheduling across both time zones is essential for continuous coverage.
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