Tokyo to Denver Time Difference
Denver is 15 hours behind Tokyo. When it's 10:33:51 PM in Tokyo, it's 07:33:51 AM in Denver.
How Many Hours Behind Is Denver From Tokyo?
Denver is 15 hours behind Tokyo. So Tokyo is 15 hours ahead of Denver looking the other way — the same gap, described from the other end.
In practice that means a working day in Tokyo starts when it is already 6:00 PM the previous day in Denver. The gap is not fixed all year: it becomes 16 hours on Sunday, November 1, 2026, when Denver changes its clocks.
Best Time to Call Tokyo and Denver
Standard 9-to-5 hours in Tokyo and Denver never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 1:00 PM in Tokyo, which is 4:00 PM to 10:00 PM in Denver.
both at work Tokyo only Denver only neither — hours shown along the strip are Tokyo local time.
Convert a Specific Time
Pick any date and time in Tokyo to see the exact equivalent in Denver.
Common Times Converted
Tokyo time on the left, Denver time on the right.
Tokyo to Denver: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Tokyo. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Tokyo | Denver | Working hours |
|---|---|---|
| 12:00 AM | 9:00 AM prev day | Denver only |
| 1:00 AM | 10:00 AM prev day | Denver only |
| 2:00 AM | 11:00 AM prev day | Denver only |
| 3:00 AM | 12:00 PM prev day | Denver only |
| 4:00 AM | 1:00 PM prev day | Denver only |
| 5:00 AM | 2:00 PM prev day | Denver only |
| 6:00 AM | 3:00 PM prev day | Denver only |
| 7:00 AM | 4:00 PM prev day | Denver only |
| 8:00 AM | 5:00 PM prev day | — |
| 9:00 AM | 6:00 PM prev day | Tokyo only |
| 10:00 AM | 7:00 PM prev day | Tokyo only |
| 11:00 AM | 8:00 PM prev day | Tokyo only |
| 12:00 PM | 9:00 PM prev day | Tokyo only |
| 1:00 PM | 10:00 PM prev day | Tokyo only |
| 2:00 PM | 11:00 PM prev day | Tokyo only |
| 3:00 PM | 12:00 AM | Tokyo only |
| 4:00 PM | 1:00 AM | Tokyo only |
| 5:00 PM | 2:00 AM | — |
| 6:00 PM | 3:00 AM | — |
| 7:00 PM | 4:00 AM | — |
| 8:00 PM | 5:00 AM | — |
| 9:00 PM | 6:00 AM | — |
| 10:00 PM | 7:00 AM | — |
| 11:00 PM | 8:00 AM | — |
Understanding the Tokyo – Denver Time Difference
Tokyo runs on Asia/Tokyo, currently JST (UTC+9:00). Denver runs on America/Denver, currently MDT (UTC-6:00). The gap of 15 hours is simply the distance between those two offsets.
Denver observes Daylight Saving Time and Tokyo does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when Denver adjusts its clocks and the difference becomes 16 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Japan · Daylight Saving Time in the United States.
Tokyo today
Denver today
Frequently Asked Questions
What is the time difference between Tokyo and Denver?
Denver is currently 15 hours behind Tokyo. That gap becomes 16 hours on Sunday, November 1, 2026, when Denver changes its clocks.
How many hours behind is Denver from Tokyo?
Denver is 15 hours behind Tokyo. Looking at it the other way, Tokyo is 15 hours ahead of Denver.
What time is it in Denver when it is 9:00 AM in Tokyo?
When it is 9:00 AM in Tokyo, it is 6:00 PM the previous day in Denver.
Is Denver ahead of or behind Tokyo?
Denver is 15 hours behind Tokyo. Tokyo reaches each point in the day first, so Denver is still getting started while the Tokyo working day is finishing.
What is the best time to call between Tokyo and Denver?
Standard business hours in Tokyo and Denver do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 7:00 AM to 1:00 PM in Tokyo, which is 4:00 PM to 10:00 PM in Denver.
Does the time difference between Tokyo and Denver change during the year?
Yes. Denver observes Daylight Saving Time and Tokyo does not, so the gap between them shifts during the year. It changes to 16 hours on Sunday, November 1, 2026.
What time zones are Tokyo and Denver in?
Tokyo uses the Asia/Tokyo time zone, currently JST (UTC+9:00). Denver uses America/Denver, currently MDT (UTC-6:00).