Time Difference Between Alaska Time and Japan
As of 31 August 2026, Japan is 17 hours ahead of Alaska Time. That number is not constant. Over the course of a year, because of daylight saving changes, Tokyo, Japan ranges from 17 hours ahead to 18 hours ahead relative to Alaska Time, United States. The calculator below is always up to date.
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Alaska Time, United States
14:34
Mon, Aug 31, 2026
UTC-8 · AKDT · America/Anchorage
Tokyo, Japan
+17h07:34
Tue, Sep 1, 2026
UTC+9 · Asia/Tokyo
Japan is 17 hours ahead of Alaska Time.
When it is 14:34 in Alaska Time, it is already the next day in Japan.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Alaska Time | Monday, August 31, 2026 | AKDTAmerica/Anchorage | UTC-8 | Active now |
| Japan | Tuesday, September 1, 2026 | Asia/Tokyo | UTC+9 | Not observed |
Alaska Time: Covers all of Alaska. Switches between AKST (UTC-9) and AKDT (UTC-8) with daylight saving.
Hour by hour: Alaska Time to Japan
Every hour of today in Alaska Time and what it is in Japan. Highlighted rows fall inside Japan working hours (09:00–18:00).
| Alaska Time | Japan |
|---|---|
| 00:00 | 17:00 |
| 01:00 | 18:00 |
| 02:00 | 19:00 |
| 03:00 | 20:00 |
| 04:00 | 21:00 |
| 05:00 | 22:00 |
| 06:00 | 23:00 |
| 07:00 | 00:00next day |
| 08:00 | 01:00next day |
| 09:00 | 02:00next day |
| 10:00 | 03:00next day |
| 11:00 | 04:00next day |
| Alaska Time | Japan |
|---|---|
| 12:00 | 05:00next day |
| 13:00 | 06:00next day |
| 14:00 | 07:00next day |
| 15:00 | 08:00next day |
| 16:00 | 09:00next day |
| 17:00 | 10:00next day |
| 18:00 | 11:00next day |
| 19:00 | 12:00next day |
| 20:00 | 13:00next day |
| 21:00 | 14:00next day |
| 22:00 | 15:00next day |
| 23:00 | 16:00next day |
Best time to call or meet
Overlapping working hours
16:00–18:00 in Alaska Time (09:00–11:00 in Japan)
Both places are inside 09:00–18:00 for 2 hours a day. Anything in this window works without asking anyone to stay late.
Reasonable calling hours
15:00–21:00 in Alaska Time (08:00–14:00 in Japan)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
Alaska Time puts its clocks back on Sunday, November 1, 2026
The local offset moves from UTC-8 to UTC-9. After that date, Japan is 18 hours ahead of Alaska Time — instead of 17 hours ahead, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Alaska Time and Japan: common questions
What is the time difference between Alaska Time and Japan?
As of 31 August 2026, Japan is 17 hours ahead of Alaska Time. The gap is not fixed: across the year, Japan ranges from 17 hours ahead to 18 hours ahead relative to Alaska Time, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Alaska Time, what time is it in Japan?
It is 02:00 AM in Tokyo, Japan. Use the time field in the calculator above to check any other hour.
Is Japan ahead of or behind Alaska Time?
Japan is ahead of Alaska Time by 17 hours at the moment. In practical terms, the working day in Japan starts and ends earlier in Alaska Time terms.
Do Alaska Time and Japan observe daylight saving time?
Alaska Time changes its clocks twice a year; Japan does not. The difference therefore shifts by an hour when Alaska Time switches: across the year, Japan ranges from 17 hours ahead to 18 hours ahead relative to Alaska Time.
What is the best time to call Japan from Alaska Time?
Working hours overlap between 16:00 and 18:00 Alaska Time time, which is 09:00 to 11:00 in Japan. Calls inside that window reach both sides during the normal working day.
Related comparisons
Local dates shown for Alaska Time, United States (UTC-8) and Tokyo, Japan (UTC+9) were generated on Monday, August 31, 2026 UTC and refresh in your browser.