AKDT to GMT Converter
Convert time between Alaska Daylight Time (AKDT) and Greenwich Mean Time (GMT)
Alaska Daylight Time (AKDT)
Greenwich Mean Time (GMT)
Time Difference
Greenwich Mean Time (GMT) is 0 hours ahead of Alaska Daylight Time (AKDT)
Select Date
Select Time
Quick Reference
| AKDT | GMT |
|---|---|
| 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 GMT Time Conversion
Converting time between Alaska Daylight Time (AKDT) and Greenwich Mean Time (GMT) bridges Anchorage and Fairbanks with London, Reykjavik, Lisbon, and other GMT-aligned regions. AKDT is UTC-8 while GMT is UTC+0, placing GMT 8 hours ahead of AKDT.
GMT is the UK's winter standard time and is widely used as a reference timezone (UTC≈GMT). When the UK switches to BST (UTC+1) in summer, the offset to AKDT becomes 9 hours. For most of the year, when AKDT is active, the UK is on BST, so the AKDT-GMT pairing applies in brief DST-transition windows or when working with regions like Iceland that stay on GMT year-round.
Common Use Cases for AKDT to GMT Conversion
Business & Work
- Coordinating with Iceland or Portugal-based teams from Alaska
- Working with UTC-aligned global systems and logs
- Planning meetings near DST transitions between Alaska and the UK
Personal & Travel
- Planning travel during DST transition periods
- Coordinating with family and friends in Iceland or Portugal
- Understanding GMT as a reference for global event scheduling
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
Greenwich Mean Time (GMT)
- UTC Offset: UTC+0 (UTC+1 during BST)
- IANA Timezone: Europe/London
- Daylight Saving: UK switches to BST from last Sunday in March to last Sunday in October; Iceland and Portugal stay on GMT year-round
- Major Cities: London, Reykjavik, Lisbon, Dublin (DST varies), Casablanca
- Coverage: United Kingdom in winter, plus Iceland year-round and several other Atlantic-aligned regions
Quick Reference: AKDT to GMT
Remember: GMT is 8 hours ahead of AKDT. For most of the year the UK is on BST instead — see the AKDT-BST page.
Frequently Asked Questions
What is the time difference between AKDT and GMT?
Alaska Daylight Time (AKDT) is UTC-8, while Greenwich Mean Time (GMT) is UTC+0. GMT is 8 hours ahead of AKDT. When it is 12:00 PM in Anchorage, it is 8:00 PM GMT.
When does this AKDT to GMT conversion apply?
AKDT runs from the second Sunday in March to the first Sunday in November. GMT is the UK's winter standard time and is also used year-round in Iceland and parts of West Africa. The AKDT-GMT pairing is most relevant for those year-round GMT regions.
How does the time difference change throughout the year?
For most of the year when AKDT is active, the UK is on BST (UTC+1) — see the AKDT-BST page. The AKDT-GMT 8-hour offset applies in brief DST-transition windows for the UK, and year-round for Iceland.
What are the best times for AKDT-GMT business calls?
Morning in Anchorage (9:00 AM AKDT) is 5:00 PM GMT — a workable late afternoon for European partners and a strong morning for AKDT.
Which countries/regions use GMT timezone?
GMT is the UK's winter standard, plus year-round in Iceland, Portugal (mainland follows BST/WEST), and parts of West Africa including Ghana and Senegal. UTC is closely aligned with GMT and used as a reference for global timestamps.
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
- • GMT is 8 hours ahead of AKDT — add 8 hours to an Anchorage time to get the GMT time.
- • When working with the UK during Alaska's DST window, the UK is on BST not GMT — see the AKDT-BST page.
- • Best meeting window: 8:00–10:00 AM AKDT overlaps with 4:00–6:00 PM GMT.
- • GMT is the practical equivalent of UTC for timestamp coordination — most server logs use UTC, which aligns with GMT year-round.
- • Use IANA identifiers (America/Anchorage and Europe/London or Atlantic/Reykjavik) in calendar tools to handle DST automatically.
- • Late afternoon and evening AKDT calls cross into the next calendar day in GMT regions. Confirm the date when scheduling.