Time Difference Between Tokyo and Denver

The time difference between Tokyo and Denver is 15 hours. When it is 12:00 noon in Tokyo, it is 21:00 in Denver. Tokyo uses the Asia/Tokyo time zone (UTC+9), while Denver uses America/Denver (UTC-6).

Time Zone Details: Tokyo vs Denver

Best Time to Schedule a Call

With a 15 hours gap, there is no standard business-hours overlap between Tokyo and Denver. One party will need to adjust their schedule. Early mornings in Tokyo or late evenings in Denver tend to be the most practical compromise.

Hour-by-Hour Time Conversion

Use this table to quickly convert any hour from Tokyo time to Denver time. Rows highlighted in green indicate overlapping business hours in both cities.

Daylight Saving Time (DST) Impact

Denver is currently observing daylight saving time, while Tokyo is on standard time. When Denver switches back to standard time, the difference between these two cities will shift by 1 hour.

Practical Tips for Tokyo–Denver Scheduling

• Video calls: Rotate call times between early-morning and late-evening slots to share the scheduling burden fairly.
• Email and async work: Send messages at the end of your workday so they arrive at the start of theirs. With a 15 hours offset, replies will often land by your next morning.
• Flight arrivals: A direct flight between these cities can cross 15 time zones. Factor in jet lag recovery — most travelers need roughly one day per hour of time difference to fully adjust.
• Use UTC as a neutral reference when coordinating with three or more time zones at once.

Compare Tokyo and Denver with Other Cities

From Tokyo

From Denver

Frequently Asked Questions

What is the time difference between Tokyo and Denver?

The time difference is 15 hours. Denver is 15 hours behind Tokyo.

Does the time difference change during the year?

Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.

When is the best time to call from Tokyo to Denver?

There is no ideal window during standard business hours. Consider scheduling at the edges — early morning for the city that is ahead and late afternoon for the city that is behind.

How do I convert Tokyo time to Denver time?

Subtract 15 hours from Tokyo time to get Denver time. Use the hour-by-hour table above for a quick reference.

Related Pages

• Current time in Tokyo — live clock, time zone details, DST status
• Current time in Denver — live clock, time zone details, DST status
• Time Difference Calculator — compare any two cities
• UTC+9 countries and cities
• UTC-6 countries and cities
• Current UTC Time
• All World Time Zones
• What Is a Time Zone?

For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.