AKST to Japan
+18hAKST
AKSTSOURCEJapan
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
AKST and JST on the World Map
The map below highlights the AKST (Alaska Standard Time) and JST (Japan Standard Time) timezone regions across the globe.
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.
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.
Everything You Need to Know About AKST and Japan Time
AKST runs on Alaska Standard Time (AKST) at UTC-09:00. Japan runs on Japan Standard Time (JST) at UTC+09:00. That puts AKST 18 hours ahead of Japan — a difference of +18h at the current offsets.
In practice, when it is 9:00 AM in AKST it is 3:00 AM in Japan on the next day. Midnight in AKST is 6:00 PM in Japan. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AKST to Japan time conversion table
| AKST (AKST) | Japan (JST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | same day |
| 6:00 AM | 12:00 AM | next day |
| 7:00 AM | 1:00 AM | next day |
| 8:00 AM | 2:00 AM | next day |
| 9:00 AM | 3:00 AM | next day |
| 12:00 PM | 6:00 AM | next day |
| 3:00 PM | 9:00 AM | next day |
| 5:00 PM | 11:00 AM | next day |
| 6:00 PM | 12:00 PM | next day |
| 9:00 PM | 3:00 PM | next day |
Why people convert AKST to Japan time
- Scheduling a call from AKST to Japan: a 10:00 AM start in AKST lands at 4:00 AM in Japan the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +18h gap: AKST and Japan 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 Japan is 3:00 AM in AKST.
- Keeping family and friends in sync: knowing that 8:00 PM in AKST is 2:00 PM in Japan makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AKST" is unambiguous; "3 PM" across a +18h gap is not.
- With a +18h gap there is no shared 9-to-5 window, so alternate the early start: one week AKST takes the early slot, the next week Japan does.
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).
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.
Best time to call between AKST and Japan
With a +18h offset there is no overlap inside a normal 9 AM – 5 PM day. Japan opens at 9:00 AM JST, which is 3:00 AM in AKST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AKST and Japan have no shared working hours because of the +18h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AKST is 18 hours ahead of Japan (AKST UTC-09:00 → JST UTC+09:00). 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
AKST
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
Japan
Does not observe DST
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 AKST and Japan?
AKST (AKST, UTC-09:00) is 18 hours ahead of Japan (JST, UTC+09:00). The gap is currently +18h.
How do I convert AKST time to Japan time?
Add +18h to AKST local time. For example, 9:00 AM in AKST is 3:00 AM in Japan (next day).
What time is it in Japan right now?
Japan uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +18h offset from AKST.
What is the best time to call Japan from AKST?
There is no shared working-hours window because of the +18h gap. The closest option is 1:00 PM in AKST, which is 7:00 AM in Japan.
Which is ahead, AKST or Japan?
AKST is 18 hours ahead of Japan. When it is 12:00 PM in AKST it is 6:00 AM in Japan.
Do AKST and Japan use different time zones?
AKST uses AKST at UTC-09:00, while Japan (Japan) uses JST at UTC+09:00. The IANA identifiers are America/Anchorage and Asia/Tokyo.
Does daylight saving time affect the AKST–Japan difference?
Neither zone observes daylight saving time, so the +18h offset between AKST and Japan is fixed all year.
Which other cities share AKST's time zone?
AKST also covers Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
Which countries use AKST, AKST's zone?
AKST is used in United States (Alaska).
Is there a day difference between AKST and Japan?
Sometimes. The +18h gap is large enough that 8:00 PM or later in AKST already falls on the next day in Japan.
What is the time difference between AKST and Japan?
Japan is +18h from AKST.
What timezone is AKST in?
AKST operates on its local timezone.
What timezone is Japan in?
Japan operates on its local timezone.
Which countries use AKST (Alaska Standard Time)?
AKST is used in United States (Alaska).
Does AKST observe daylight saving time?
Yes, AKST switches to AKDT during summer months.
What are some interesting facts about AKST?
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.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in AKST, what time is it in Japan?
When it is 12:00 AM (midnight) in AKST (AKST), it is +18h later in Japan (JST).
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See every conversion from AKST →·See every conversion from Japan →