AKST to JST Converter

Category: Time Zone Converters

- June 28, 2025

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Alaska Standard Time (AKST)

UTC-9 • Anchorage, Fairbanks, Juneau

Conversion Settings

Configure your timezone conversion preferences

Auto Convert

Daylight Saving Aware

Show UTC Offset

Show Seconds

Japan Standard Time (JST)

UTC+9 • Tokyo, Osaka, Yokohama

--:--:--

Select a time to convert

Time Difference: --

UTC Offset (AKST): -09:00

UTC Offset (JST): +09:00

DST Status: --

AKST Time: --

JST Time: --

Time Format:

Current AKST: --:--:--

Current JST: --:--:--

🇺🇸 AKST is UTC-9 in winter and switches to AKDT (UTC-8) during summer. JST never observes daylight saving time and is always UTC+9.

AKST to JST Conversion Guide

What is AKST to JST Conversion?

AKST to JST conversion helps you translate time between Alaska Standard Time and Japan Standard Time zones. AKST is UTC-9 during winter months and switches to AKDT (UTC-8) during summer. JST is always UTC+9 and never changes for daylight saving time. The time difference varies between 18 hours (AKST to JST) and 17 hours (AKDT to JST) depending on the season.

Time Zone Information

Alaska Standard Time (AKST): Used in Alaska including Anchorage, Fairbanks, and Juneau. UTC-9 in winter, switches to AKDT (UTC-8) during summer daylight saving period.

Japan Standard Time (JST): Used throughout Japan including Tokyo, Osaka, and Yokohama. Always UTC+9 with no daylight saving time adjustments ever implemented.

Time Difference: JST is 18 hours ahead of AKST (winter) and 17 hours ahead of AKDT (summer). This creates nearly opposite times - when it's morning in Alaska, it's evening the next day in Japan.

Daylight Saving Time Impact

Alaska: Observes daylight saving time from March to November, switching between AKST (UTC-9) and AKDT (UTC-8)

Japan: Never observes daylight saving time - JST remains UTC+9 throughout the year

Variable Difference: The time difference changes from 18 hours (AKST to JST) to 17 hours (AKDT to JST) during Alaskan summer months

Common Conversion Examples

Business Hours (Winter)

AKST 9:00 AM → JST 4:00 AM (next day)

AKST 3:00 PM → JST 10:00 AM (next day)

Limited overlap for business meetings

Business Hours (Summer)

AKDT 9:00 AM → JST 3:00 AM (next day)

AKDT 4:00 PM → JST 10:00 AM (next day)

Slightly better overlap during AKDT

Meeting Planning

Best AKST Time: 3:00 PM - 6:00 PM

Converts to JST: 10:00 AM - 1:00 PM (next day)

Afternoon Alaska for morning Japan

Travel Planning

AKST Departure: 6:00 PM

JST Arrival: 1:00 PM (day after next)

Cross international date line

Conversion Tips & Best Practices

• JST is 18 hours ahead of AKST in winter, 17 hours ahead of AKDT in summer

• Japan never observes daylight saving time, keeping JST constant year-round

• Alaska observes daylight saving from second Sunday in March to first Sunday in November

• Business hours have minimal overlap - afternoon Alaska corresponds to next morning Japan

• Consider date changes when converting - JST is usually a day ahead for Alaska times

• Popular cities: Anchorage, Tokyo, Fairbanks, Osaka, Juneau, Yokohama

Convert Between Alaska and Japan Time

If you've ever had to plan a meeting between Anchorage and Tokyo, you know it’s not just a time zone issue—it’s a full-on date shift. That’s where this time converter comes in. It’s built to make back-and-forth scheduling across Alaska Standard Time (AKST) and Japan Standard Time (JST) a whole lot smoother. Whether you're organizing calls, flights, or deadlines, this tool takes the guesswork out of the equation.

Why this AKST-JST Converter is So Handy

There's an 18-hour time difference between Alaska and Japan in the winter. During summer, when Alaska flips to daylight saving time (AKDT), the gap narrows to 17 hours. That means if it's Monday morning in Anchorage, it’s already Tuesday in Tokyo. Trying to do the math every time? No thanks. This tool handles that for you, accurately and instantly.

People use it for all kinds of things. For example, a business team in Fairbanks might use it to line up with suppliers in Osaka. A traveler leaving Juneau might double-check arrival times in Yokohama. Or maybe a teacher in Tokyo is helping students understand time zones during a geography lesson. It works for all of that.

Here’s How to Use It

Step 1: Pick Your Starting Time

Start by entering a date and time. You can either type it in or let the tool use the current moment with a quick tap of the “Now” button.

Step 2: Choose the Input Time Zone

Pick whether your input time is in AKST (Alaska) or JST (Japan). Switching is as easy as hitting the “Swap” button.

Step 3: Adjust Optional Settings

Auto Convert: When checked, the tool updates results automatically as you change input values.
Daylight Saving Aware: This keeps the tool accurate during Alaska’s seasonal time shifts.
Show UTC Offset: Adds UTC offset values to your results.
Show Seconds: Displays the exact second, handy if you need precision.

Step 4: Hit Convert (If Needed)

If auto-convert isn’t on, press the "Convert Time" button manually. The new time pops up immediately, complete with formatted labels and time difference details.

Step 5: Reset or Format Anytime

The “Reset” button clears and reverts everything. You can also toggle between 12-hour and 24-hour clock formats using the format button at the bottom.

Little Extras That Make a Big Difference

The tool updates live current times for both AKST and JST in real time.
If you're not sure whether daylight saving is active, it shows you that too.
Time differences are shown clearly, whether it’s 17 or 18 hours, depending on the season.
The swap function automatically flips both the time zones and their labels, no extra work needed.

Where You Might Use This

Imagine you're a developer in Anchorage working remotely with a product manager in Tokyo. You're told to deploy a fix at 4 PM JST, and it's currently 8 PM the previous day in Alaska. Instead of second-guessing yourself or scrolling through search engines, you punch the numbers into this converter. Done. No confusion, no miscommunication. Everyone stays on track.

Keep Your Schedule in Sync Across Time Zones

This converter doesn’t just tell you what time it is somewhere else, it helps you plan across time zones without missing a beat. Whether you're setting up calls, adjusting travel, or just making sure you're not messaging someone at 3 AM, this tool keeps everything aligned. The difference between AKST and JST might span nearly a full day, but using this makes it feel like no big deal.