Denver to Tokyo Time Difference
Tokyo is 15 hours ahead of Denver. When it's 06:55:51 AM in Denver, it's 09:55:51 PM in Tokyo.
How Many Hours Ahead Is Tokyo From Denver?
Tokyo is 15 hours ahead of Denver. So Denver is 15 hours behind Tokyo looking the other way — the same gap, described from the other end.
In practice that means a working day in Denver starts when it is already 12:00 AM the next day in Tokyo. 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 Denver and Tokyo
Standard 9-to-5 hours in Denver and Tokyo never overlap, so someone has to take the call outside their working day. The most workable window is 4:00 PM to 10:00 PM in Denver, which is 7:00 AM to 1:00 PM in Tokyo.
both at work Denver only Tokyo only neither — hours shown along the strip are Denver local time.
Convert a Specific Time
Pick any date and time in Denver to see the exact equivalent in Tokyo.
Common Times Converted
Denver time on the left, Tokyo time on the right.
Denver to Tokyo: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Denver. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Denver | Tokyo | Working hours |
|---|---|---|
| 12:00 AM | 3:00 PM | Tokyo only |
| 1:00 AM | 4:00 PM | Tokyo only |
| 2:00 AM | 5:00 PM | — |
| 3:00 AM | 6:00 PM | — |
| 4:00 AM | 7:00 PM | — |
| 5:00 AM | 8:00 PM | — |
| 6:00 AM | 9:00 PM | — |
| 7:00 AM | 10:00 PM | — |
| 8:00 AM | 11:00 PM | — |
| 9:00 AM | 12:00 AM next day | Denver only |
| 10:00 AM | 1:00 AM next day | Denver only |
| 11:00 AM | 2:00 AM next day | Denver only |
| 12:00 PM | 3:00 AM next day | Denver only |
| 1:00 PM | 4:00 AM next day | Denver only |
| 2:00 PM | 5:00 AM next day | Denver only |
| 3:00 PM | 6:00 AM next day | Denver only |
| 4:00 PM | 7:00 AM next day | Denver only |
| 5:00 PM | 8:00 AM next day | — |
| 6:00 PM | 9:00 AM next day | Tokyo only |
| 7:00 PM | 10:00 AM next day | Tokyo only |
| 8:00 PM | 11:00 AM next day | Tokyo only |
| 9:00 PM | 12:00 PM next day | Tokyo only |
| 10:00 PM | 1:00 PM next day | Tokyo only |
| 11:00 PM | 2:00 PM next day | Tokyo only |
Understanding the Denver – Tokyo Time Difference
Denver runs on America/Denver, currently MDT (UTC-6:00). Tokyo runs on Asia/Tokyo, currently JST (UTC+9:00). 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 the United States · Daylight Saving Time in Japan.
Denver today
Tokyo today
Frequently Asked Questions
What is the time difference between Denver and Tokyo?
Tokyo is currently 15 hours ahead of Denver. That gap becomes 16 hours on Sunday, November 1, 2026, when Denver changes its clocks.
How many hours ahead is Tokyo from Denver?
Tokyo is 15 hours ahead of Denver. Looking at it the other way, Denver is 15 hours behind Tokyo.
What time is it in Tokyo when it is 9:00 AM in Denver?
When it is 9:00 AM in Denver, it is 12:00 AM the next day in Tokyo.
Is Tokyo ahead of or behind Denver?
Tokyo is 15 hours ahead of Denver. Tokyo reaches each point in the day first, so its working day is already finishing while Denver is still getting started.
What is the best time to call between Denver and Tokyo?
Standard business hours in Denver and Tokyo do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 4:00 PM to 10:00 PM in Denver, which is 7:00 AM to 1:00 PM in Tokyo.
Does the time difference between Denver and Tokyo 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 Denver and Tokyo in?
Denver uses the America/Denver time zone, currently MDT (UTC-6:00). Tokyo uses Asia/Tokyo, currently JST (UTC+9:00).