The short answer
7pm in Tokyo is 4am in Mountain Time.
Tokyo is 15 hours ahead of Mountain Time. It lands deep outside working hours in Mountain Time — see the best time to meet below for a friendlier slot.
Tokyo☾
7pm
Mountain Time☾
4am
Right now
9:54amJST · UTC+09:00 · Tue, Aug 25
6:54pmMDT · UTC-06:00 · Mon, Aug 24
Read across to convert
Tokyo
JST · UTC+09:00
Mountain Time
MDT · UTC-06:00
Pinned7pmTokyo=4amMountain Time
12amTue
9amMon ·−1d
WORK1am
10amMon ·−1d
WORK2am
11amMon ·−1d
WORK3am
12pmMon ·−1d
WORK4am
1pmMon ·−1d
WORK5am
2pmMon ·−1d
WORK6am
3pmMon ·−1d
WORK7am
4pmMon ·−1d
WORK8am
5pmMon ·−1d
NOW
9am
WORK6pmMon ·−1d
10am
WORK7pmMon ·−1d
11am
WORK8pmMon ·−1d
12pm
WORK9pmMon ·−1d
1pm
WORK10pmMon ·−1d
2pm
WORK11pmMon ·−1d
3pm
WORK12amTue
4pm
WORK1am
5pm
2am
6pm
3am
PINNED
7pm
4am
8pm
5am
9pm
6am
10pm
7am
11pm
8am
daylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Tokyo
7am–10am
Mountain Time
4pm–7pm
previous day
Popular conversions
Quick reference.
9amTokyo=6pmMountain Time · prev day
12pmTokyo=9pmMountain Time · prev day
3pmTokyo=12amMountain Time
5pmTokyo=2amMountain Time
9pmTokyo=6amMountain Time
In context
What each side covers.
Mountain Time
6:54pmMDT · UTC-06:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
5:54pm
India Standard Time
6:24am
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
8:54pm
Central European Time
2:54am
Eastern Time to Central Europe6 hours behind
India Standard Time
6:24am
Eastern Daylight Time
8:54pm
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
1:54am
India Standard Time
6:24am
London to India4 hours 30 minutes behind
Pacific Daylight Time
5:54pm
Eastern Daylight Time
8:54pm
Pacific to Eastern Time3 hours behind
Central European Time
2:54am
India Standard Time
6:24am
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Tokyo and Mountain Time. Can't find what you need? Email [email protected].
- What is the time difference between Tokyo and Mountain Time?
- Tokyo is 15 hours ahead of Mountain 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 7pm in Tokyo, what time is it in Mountain Time?
- 7pm in Tokyo is 4am in Mountain Time. It lands deep outside working hours in Mountain Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Tokyo and Mountain Time?
- There's no comfortable 9-to-5 overlap between Tokyo and Mountain Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — JST and MDT — 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.