The short answer

5pm in Cuba Standard Time is 6am in Seoul on the next day.

Cuba Standard Time is 13 hours behind Seoul. That's early morning in Seoul, before the typical working day begins.

Cuba Standard Time
5pm
Seoul
6am
next day
Right now
7:45amCDT · UTC-04:00 · Mon, Jun 22
8:45pmKST · UTC+09:00 · Mon, Jun 22
Read across to convert
Cuba Standard Time
CDT · UTC-04:00
7:45am ☀
Seoul
KST · UTC+09:00
8:45pm ☾
Pinned5pmCuba Standard Time=6amSeoul · Tue (next day)
12amMon
1pm
WORK
1am
2pm
WORK
2am
3pm
WORK
3am
4pm
WORK
4am
5pm
5am
6pm
6am
7pm
NOW
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
PINNED
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
=
Seoul
7am–8am
next day
Popular conversions

Quick reference.

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

What each side covers.

Cuba Standard Time
CDT · UTC-04:00
7:45am
Cities on this clock
Seoul
KST · UTC+09:00
8:45pm
Cities on this clock

Frequently asked

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

What is the time difference between Cuba Standard Time and Seoul?
Cuba Standard Time is 13 hours behind Seoul 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 5pm in Cuba Standard Time, what time is it in Seoul?
5pm in Cuba Standard Time is 6am in Seoul on the next day. That's early morning in Seoul, before the typical working day begins. 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 Seoul?
There's no comfortable 9-to-5 overlap between Cuba Standard Time and Seoul — 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 KST — 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.