JST to Anchorage
-17hJST
JSTSOURCEAnchorage
AKDTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and AKDT on the World Map
The map below highlights the JST (Japan Standard Time) and AKDT (Alaska Standard Time) timezone regions across the globe.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
About Anchorage
WikipediaAnchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
Moose occasionally wander through the city streets.
Comparing Time Zones: JST and Anchorage
JST runs on Japan Standard Time (JST) at UTC+09:00. Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, also currently on daylight saving time. That puts JST 17 hours behind Anchorage — a difference of -17h at the current offsets.
In practice, when it is 9:00 AM in JST it is 4:00 PM in Anchorage on the previous day. Midnight in JST is 7:00 AM in Anchorage.Anchorage observes daylight saving time while JST does not, so the gap narrows or widens by an hour part of the year.
JST to Anchorage time conversion table
| JST (JST) | Anchorage (AKDT) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | previous day |
| 6:00 AM | 1:00 PM | previous day |
| 7:00 AM | 2:00 PM | previous day |
| 8:00 AM | 3:00 PM | previous day |
| 9:00 AM | 4:00 PM | previous day |
| 12:00 PM | 7:00 PM | previous day |
| 3:00 PM | 10:00 PM | previous day |
| 5:00 PM | 12:00 AM | same day |
| 6:00 PM | 1:00 AM | same day |
| 9:00 PM | 4:00 AM | same day |
Why people convert JST to Anchorage time
- Scheduling a call from JST to Anchorage: a 10:00 AM start in JST lands at 5:00 PM in Anchorage the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -17h gap: JST and Anchorage have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Anchorage is 4:00 PM in JST.
- Watching a live event or market open: JST viewers need 4:00 PM in Anchorage to catch a 9:00 AM start there, and 5:00 PM if the event is anchored to JST.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -17h gap is not.
- With a -17h gap there is no shared 9-to-5 window, so alternate the early start: one week JST takes the early slot, the next week Anchorage does.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
Best time to call between JST and Anchorage
With a -17h offset there is no overlap inside a normal 9 AM – 5 PM day. Anchorage opens at 9:00 AM AKDT, which is 4:00 PM in JST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
JST and Anchorage have no shared working hours because of the -17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
JST is 17 hours behind Anchorage (JST UTC+09:00 → AKDT UTC-08:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
JST
Does not observe DST
Anchorage
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between JST and Anchorage?
JST (JST, UTC+09:00) is 17 hours behind Anchorage (AKDT, UTC-08:00). The gap is currently -17h.
How do I convert JST time to Anchorage time?
Add -17h to JST local time. For example, 9:00 AM in JST is 4:00 PM in Anchorage (previous day).
What time is it in Anchorage right now?
Anchorage uses AKDT at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -17h offset from JST.
What is the best time to call Anchorage from JST?
There is no shared working-hours window because of the -17h gap. The closest option is 1:00 PM in JST, which is 8:00 PM in Anchorage.
Which is behind, JST or Anchorage?
JST is 17 hours behind Anchorage. When it is 12:00 PM in JST it is 7:00 PM in Anchorage.
Do JST and Anchorage use different time zones?
JST uses JST at UTC+09:00, while Anchorage (USA) uses AKDT at UTC-08:00. The IANA identifiers are Asia/Tokyo and America/Anchorage.
Does daylight saving time affect the JST–Anchorage difference?
Yes at the moment: Anchorage is on daylight saving time and JST is not, so the -17h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share JST's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, JST's zone?
JST is used in Japan.
Is there a day difference between JST and Anchorage?
Sometimes. The -17h gap is large enough that 8:00 PM or later in JST already falls on the in Anchorage.
What is the time difference between JST and Anchorage?
Anchorage is -17h from JST.
What timezone is JST in?
JST operates on its local timezone.
What timezone is Anchorage in?
Anchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
What are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the AKST timezone?
Major cities in the AKST timezone include Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
What is the UTC offset for AKST?
Alaska Standard Time (AKST) is at UTC-09:00. During daylight saving time, it shifts to AKDT.
What should I know about the AKST timezone?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
When is it midnight in JST, what time is it in Anchorage?
When it is 12:00 AM (midnight) in JST (JST), it is -17h later in Anchorage (AKST).
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