The short answer

7am in Cuba Standard Time is 8pm in Japan Standard Time.

Cuba Standard Time is 13 hours behind Japan Standard Time. That's already evening in Japan Standard Time, after the typical working day ends.

Cuba Standard Time
7am
Japan Standard Time
8pm
Right now
2:44amCDT · UTC-04:00 · Mon, Jun 22
3:44pmJST · UTC+09:00 · Mon, Jun 22
Read across to convert
Cuba Standard Time
CDT · UTC-04:00
2:44am ☾
Japan Standard Time
JST · UTC+09:00
3:44pm ☀
Pinned7amCuba Standard Time=8pmJapan Standard Time
12amMon
1pm
WORK
1am
2pm
WORK
NOW
2am
3pm
WORK
3am
4pm
WORK
4am
5pm
5am
6pm
6am
7pm
PINNED
7am
8pm
8am
9pm
9am
WORK
10pm
10am
WORK
11pm
11am
WORK
12amTue ·+1d
12pm
WORK
1amTue ·+1d
1pm
WORK
2amTue ·+1d
2pm
WORK
3amTue ·+1d
3pm
WORK
4amTue ·+1d
4pm
WORK
5amTue ·+1d
5pm
6amTue ·+1d
6pm
7amTue ·+1d
7pm
8amTue ·+1d
8pm
9amTue ·+1d
WORK
9pm
10amTue ·+1d
WORK
10pm
11amTue ·+1d
WORK
11pm
12pmTue ·+1d
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Cuba Standard Time
6pm–7pm
=
Japan Standard Time
7am–8am
next day
Popular conversions

Quick reference.

9amCuba Standard Time=10pmJapan Standard Time
12pmCuba Standard Time=1amJapan Standard Time · next day
3pmCuba Standard Time=4amJapan Standard Time · next day
5pmCuba Standard Time=6amJapan Standard Time · next day
9pmCuba Standard Time=10amJapan Standard Time · next day
In context

What each side covers.

Cuba Standard Time
CDT · UTC-04:00
2:44am
Cities on this clock
Japan Standard Time
JST · UTC+09:00
3:44pm
Cities on this clock

Frequently asked

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

What is the time difference between Cuba Standard Time and Japan Standard Time?
Cuba Standard Time is 13 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 7am in Cuba Standard Time, what time is it in Japan Standard Time?
7am in Cuba Standard Time is 8pm in Japan Standard Time. That's already evening in Japan Standard Time, after the typical working day ends. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Cuba Standard Time and Japan Standard Time?
There's no comfortable 9-to-5 overlap between Cuba Standard Time 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 — CDT 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.