Offset
The time difference between Denver and Tokyo is 15 hours.
Denver (MDT) is behind Tokyo (JST).
MDT: UTC-6
JST: UTC+9
Denver is currently observing daylight saving time; Tokyo is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Denver and Tokyo don't overlap on the same weekday. Tokyo is 15 hours ahead of Denver.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in Denver (7 AM–11 AM the next day in Tokyo) — suggest 6:00 PM Denver (9:00 AM Tokyo).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Denver | Tokyo | Day |
|---|---|---|
| 12:00 am | 3:00 pm | Same day |
| 1:00 am | 4:00 pm | Same day |
| 2:00 am | 5:00 pm | Same day |
| 3:00 am | 6:00 pm | Same day |
| 4:00 am | 7:00 pm | Same day |
| 5:00 am | 8:00 pm | Same day |
| 6:00 am | 9:00 pm | Same day |
| 7:00 am | 10:00 pm | Same day |
| 8:00 am | 11:00 pm | Same day |
| 9:00 am | 12:00 am | +1 day |
| 10:00 am | 1:00 am | +1 day |
| 11:00 am | 2:00 am | +1 day |
| 12:00 pm | 3:00 am | +1 day |
| 1:00 pm | 4:00 am | +1 day |
| 2:00 pm | 5:00 am | +1 day |
| 3:00 pm | 6:00 am | +1 day |
| 4:00 pm | 7:00 am | +1 day |
| 5:00 pm | 8:00 am | +1 day |
| 6:00 pm | 9:00 am | +1 day |
| 7:00 pm | 10:00 am | +1 day |
| 8:00 pm | 11:00 am | +1 day |
| 9:00 pm | 12:00 pm | +1 day |
| 10:00 pm | 1:00 pm | +1 day |
| 11:00 pm | 2:00 pm | +1 day |
Daylight saving time
Denver observes daylight saving time; Tokyo does not. The offset between the two zones changes when Denver transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:26 PM
- Day length
- 14h 53m
- Sunrise
- 4:26 AM
- Sunset
- 6:56 PM
- Day length
- 14h 30m
Daylight overlap: 7h — 1:26 PM–8:26 PM in Denver (4:26 AM–11:26 AM in Tokyo). Both locations are in daylight during this window.
Cities in these zones
Other cities in Mountain Time
Other cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Related conversions
Common conversions
- What is 9:00 am Denver in Tokyo?
- 9:00 am Denver is 12:00 am Tokyo, the next day.
- What is 12:00 pm Denver in Tokyo?
- 12:00 pm Denver is 3:00 am Tokyo, the next day.
- What is 12:30 pm Denver in Tokyo?
- 12:30 pm Denver is 3:30 am Tokyo, the next day.
- What is 2:00 pm Denver in Tokyo?
- 2:00 pm Denver is 5:00 am Tokyo, the next day.
- What is 5:00 pm Denver in Tokyo?
- 5:00 pm Denver is 8:00 am Tokyo, the next day.
- What is 11:30 pm Denver in Tokyo?
- 11:30 pm Denver is 2:30 pm Tokyo, the next day.