The short answer

6pm in Denver is 9am in Japan Standard Time on the next day.

Denver is 15 hours behind Japan Standard Time. It falls outside the 9-to-5 in Denver but lands inside working hours in Japan Standard Time.

Denver
6pm
Japan Standard Time
9am
next day
Right now
2:40amMDT · UTC-06:00 · Thu, Jun 25
5:40pmJST · UTC+09:00 · Thu, Jun 25
Read across to convert
Denver
MDT · UTC-06:00
2:40am ☾
Japan Standard Time
JST · UTC+09:00
5:40pm ☀
Pinned6pmDenver=9amJapan Standard Time · Fri (next day)
12amThu
3pm
WORK
1am
4pm
WORK
NOW
2am
5pm
3am
6pm
4am
7pm
5am
8pm
6am
9pm
7am
10pm
8am
11pm
9am
WORK
12amFri ·+1d
10am
WORK
1amFri ·+1d
11am
WORK
2amFri ·+1d
12pm
WORK
3amFri ·+1d
1pm
WORK
4amFri ·+1d
2pm
WORK
5amFri ·+1d
3pm
WORK
6amFri ·+1d
4pm
WORK
7amFri ·+1d
5pm
8amFri ·+1d
PINNED
6pm
9amFri ·+1d
WORK
7pm
10amFri ·+1d
WORK
8pm
11amFri ·+1d
WORK
9pm
12pmFri ·+1d
WORK
10pm
1pmFri ·+1d
WORK
11pm
2pmFri ·+1d
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Denver
4pm–7pm
=
Japan Standard Time
7am–10am
next day
Popular conversions

Quick reference.

9amDenver=12amJapan Standard Time · next day
12pmDenver=3amJapan Standard Time · next day
3pmDenver=6amJapan Standard Time · next day
5pmDenver=8amJapan Standard Time · next day
9pmDenver=12pmJapan Standard Time · next day
In context

What each side covers.

Denver
MDT · UTC-06:00
2:40am
Cities on this clock
Japan Standard Time
JST · UTC+09:00
5:40pm
Cities on this clock

Frequently asked

Quick answers about converting between Denver and Japan Standard Time. Can't find what you need? Email [email protected].

What is the time difference between Denver and Japan Standard Time?
Denver is 15 hours behind Japan Standard 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 6pm in Denver, what time is it in Japan Standard Time?
6pm in Denver is 9am in Japan Standard Time on the next day. It falls outside the 9-to-5 in Denver but lands inside working hours in Japan Standard Time. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Denver and Japan Standard Time?
There's no comfortable 9-to-5 overlap between Denver and Japan Standard 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 — MDT and JST — 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.