HST to AKST Converter
Convert time between Hawaii Standard Time (HST) and Alaska Standard Time (AKST)
Hawaii Standard Time (HST)
Alaska Standard Time (AKST)
Time Difference
Alaska Standard Time (AKST) is 0 hours ahead of Hawaii Standard Time (HST)
Select Date
Select Time
Quick Reference
| HST | AKST |
|---|---|
| 16:00 | 17:00 |
| 18:00 | 19:00 |
| 20:00 | 21:00 |
| 22:00 | 23:00 |
| 00:00 | 01:00 |
| 02:00 | 03:00 |
| 04:00 | 05:00 |
| 06:00 | 07:00 |
| 08:00 | 09:00 |
| 10:00 | 11:00 |
| 12:00 | 13:00 |
| 14:00 | 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 HST to AKST Time Conversion
Converting time between Hawaii Standard Time (HST) and Alaska Standard Time (AKST) is important for coordinating between Hawaii and Alaska during standard time. HST is UTC-10 year-round, while AKST is UTC-9 (observed November to March). AKST is only 1 hour ahead of HST, making this one of the closest timezone relationships for Hawaii.
This conversion is vital for businesses coordinating between Hawaii and Alaska. Whether you're scheduling meetings between Honolulu and Anchorage, managing distributed teams across the Pacific, or planning travel between Hawaiian and Alaskan destinations, our accurate IANA-based converter ensures precise timezone calculations. The minimal 1-hour difference makes Hawaii-Alaska coordination one of the easiest among mainland US coordination challenges.
Common Use Cases for HST to AKST Conversion
Business & Work
- Scheduling calls between Hawaii and Alaska during standard time
- Coordinating between Hawaii and Alaska headquarters
- Managing business operations across Hawaii and Alaska regions
- Planning conference calls between Hawaii and Alaska teams
Personal & Travel
- Scheduling video calls with family and friends in Alaska
- Planning travel between Hawaii and Alaska destinations
- Coordinating vacation time across regions during winter months
- Arranging online meetings with Alaska-based colleagues
Time Zone Information
Hawaii Standard Time (HST)
- UTC Offset: UTC-10
- IANA Timezone: Pacific/Honolulu
- Daylight Saving: No daylight saving time observed
- Major Cities: Honolulu, Hilo, Maui, Kauai, Big Island
- Coverage: State of Hawaii
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, Palmer
- Coverage: State of Alaska
Quick Reference: HST to AKST
Remember: AKST is 1 hour ahead of HST during standard time (November-March). When daylight saving begins and AKST becomes AKDT (UTC-8), the difference increases to 2 hours. Hawaii does not observe daylight saving time, so HST remains constant year-round.
Frequently Asked Questions
What is the time difference between HST and AKST?
Hawaii Standard Time (HST) is UTC-10, while Alaska Standard Time (AKST) is UTC-9. AKST is 1 hour ahead of HST. This means when it's 8:00 AM in HST, it's 9:00 AM the same day in AKST.
Does Hawaii observe daylight saving time?
No, Hawaii does not observe daylight saving time. Hawaii Standard Time (HST) remains UTC-10 year-round. However, Alaska observes daylight saving time, transitioning from AKST (UTC-9) to AKDT (UTC-8). This means the time difference varies between 1 hour (when AKST is active, November-March) and 2 hours (when AKDT is active, March-November).
How does HST to AKST differ from HST to AKDT?
AKDT (Alaska Daylight Time) is 1 hour ahead of AKST (Alaska Standard Time). When AKDT is active (March-November), the difference between HST and AKDT is 2 hours. When AKST is active (November-March), the difference between HST and AKST is 1 hour. AKDT is used during daylight saving time in Alaska.
What major cities are in HST and AKST timezones?
HST covers Hawaii cities including Honolulu, Hilo, Maui, Kauai, and the Big Island. AKST covers major Alaska cities like Anchorage, Juneau, Fairbanks, Ketchikan, and Palmer. These regions represent Hawaii and Alaska during standard time (November-March).
How do I convert HST to AKST manually?
To convert from HST to AKST, add 1 hour to the HST time. For example, if it's 9:00 AM HST, it would be 10:00 AM AKST the same day. Remember this conversion applies during standard time (November-March). When AKDT is active (March-November), add 2 hours instead.
What should I know about scheduling across HST and AKST?
Hawaii is only 1 hour behind Alaska during standard time, making coordination more feasible than with other mainland US regions. Morning AKST times (9-11 AM) correspond to early morning HST times (8-10 AM), and afternoon AKST (3-5 PM) corresponds to afternoon HST (2-4 PM). This close alignment makes Hawaii-Alaska coordination straightforward during business hours.
Pro Tips
- • AKST is always 1 hour ahead of HST during standard time (November-March). During daylight saving, AKDT is 2 hours ahead.
- • Hawaii does not observe daylight saving time, so HST is consistent year-round while AKST/AKDT changes twice annually.
- • Morning hours align well between HST and AKST, with only a 1-hour difference making scheduling easier than with East Coast regions.
- • Business hours overlap significantly - early morning AKST (8-10 AM) aligns with early morning HST (7-9 AM) for convenient meetings.
- • Use 24-hour time format when communicating across HST-AKST to eliminate AM/PM confusion in this relatively small time difference.
- • Tourism, logistics, and business between Hawaii and Alaska are easier to coordinate due to the minimal 1-2 hour time difference.