9am in Tokyo is 4pm in Alaska Time on the previous day.

Frequently asked

Quick answers about converting between Tokyo and Alaska Time. Can't find what you need? Email [email protected].

What is the time difference between Tokyo and Alaska Time?

Tokyo is 17 hours ahead of Alaska Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.

When it's 9am in Tokyo, what time is it in Alaska Time?

9am in Tokyo is 4pm in Alaska Time on the previous day. Both sides are inside the standard 9-to-5 working day, so this is a sociable time for a call in both places. Use the hour-by-hour table above to read any other time across.

What's the best time for a call between Tokyo and Alaska Time?

9am–10am in Tokyo lines up with 4pm–5pm in Alaska Time the previous day — both sides are inside a 9-to-5 working day.

Does this account for daylight saving time?

Yes. We track every clock change in both places, so the abbreviations you see — JST and AKDT — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.

Why is the date sometimes different on each side?

When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.