AKDT to AKST Converter
Convert time between Alaska Daylight Time (AKDT) and Alaska Standard Time (AKST)
Alaska Daylight Time (AKDT)
Alaska Standard Time (AKST)
Time Difference
Alaska Standard Time (AKST) is 0 hours ahead of Alaska Daylight Time (AKDT)
Select Date
Select Time
Quick Reference
| AKDT | AKST |
|---|---|
| 18:00 | 18:00 |
| 20:00 | 20:00 |
| 22:00 | 22:00 |
| 00:00 | 00:00 |
| 02:00 | 02:00 |
| 04:00 | 04:00 |
| 06:00 | 06:00 |
| 08:00 | 08:00 |
| 10:00 | 10:00 |
| 12:00 | 12:00 |
| 14:00 | 14:00 |
| 16:00 | 16:00 |
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 AKST Time Conversion
Converting time between Alaska Daylight Time (AKDT) and Alaska Standard Time (AKST) is a same-region conversion: both apply to most of Alaska, just at different times of year. AKDT is UTC-8 (used from the second Sunday in March to the first Sunday in November), while AKST is UTC-9 (used the rest of the year). AKST is 1 hour behind AKDT.
This converter is most useful for understanding the DST transition itself, scheduling events that span the changeover dates, or comparing winter and summer schedules in Alaska. In practice, only one of AKDT or AKST is in effect at any given moment in Alaska — they are not observed simultaneously. The converter treats them as if both were active for hypothetical scheduling and DST planning purposes.
Common Use Cases for AKDT to AKST Conversion
Business & Work
- Comparing summer (AKDT) and winter (AKST) operating hours in Alaska
- Planning DST transition cutovers for Alaska-based teams
- Scheduling recurring events that span the spring-forward or fall-back transitions
Personal & Travel
- Understanding when DST begins and ends in Alaska
- Planning travel and remembering which offset applies in a given month
- Coordinating with Alaska-based contacts whose local clock changes seasonally
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
Alaska Standard Time (AKST)
- UTC Offset: UTC-9
- IANA Timezone: America/Anchorage
- Daylight Saving: First Sunday in November to Second Sunday in March (winter standard time)
- Major Cities: Anchorage, Fairbanks, Juneau, Sitka
- Coverage: Most of Alaska outside daylight saving period
Quick Reference: AKDT to AKST
Remember: AKST is always 1 hour behind AKDT. In practice only one is active at a time in Alaska.
Frequently Asked Questions
What is the time difference between AKDT and AKST?
Alaska Daylight Time (AKDT) is UTC-8, while Alaska Standard Time (AKST) is UTC-9. AKST is 1 hour behind AKDT. When the clock reads 12:00 PM AKDT, the same physical moment in AKST notation would be 11:00 AM.
When does each timezone apply in Alaska?
AKDT applies from the second Sunday in March to the first Sunday in November (the daylight saving period). AKST applies the rest of the year — from the first Sunday in November to the second Sunday in March. Only one is in effect at any given moment.
Are AKDT and AKST observed at the same time?
No. They are the same timezone (America/Anchorage) at different times of the year. The state shifts forward to AKDT in spring and back to AKST in fall. This converter is useful for comparing summer and winter schedules or planning DST transitions.
When does Alaska switch between AKDT and AKST?
Alaska springs forward to AKDT on the second Sunday of March (clocks jump from 2:00 AM to 3:00 AM) and falls back to AKST on the first Sunday of November (clocks roll back from 2:00 AM to 1:00 AM).
Which cities use AKDT and AKST?
Both apply to most of Alaska, including Anchorage, Fairbanks, Juneau, Sitka, and Ketchikan. AKDT in summer, AKST in winter. The Aleutian Islands use Hawaii-Aleutian Time (HAST/HADT) instead.
How do I plan recurring meetings across the AKDT-AKST switch?
Use the IANA timezone America/Anchorage in calendar tools. The system will automatically apply AKDT or AKST based on the date, keeping your meetings at the same local time year-round.
Pro Tips
- • AKST is 1 hour behind AKDT — subtract 1 hour from an AKDT time to express it as AKST notation.
- • AKDT and AKST never coexist. Alaska uses AKDT March-November and AKST the rest of the year.
- • For recurring events, always use America/Anchorage as the IANA identifier so DST transitions handle themselves.
- • During the spring-forward transition, the hour from 2:00–3:00 AM AKST does not exist locally. Plan around it.
- • During the fall-back transition, the hour from 1:00–2:00 AM AKDT happens twice (once as AKDT, once as AKST). Be explicit when scheduling.
- • When converting fixed offsets (e.g., AKDT 4 PM to AKST 4 PM), remember they refer to different physical moments in the year.