The short answer

11pm in Incheon is 10am in Eastern Standard Time.

Incheon is 13 hours ahead of Eastern Standard Time. It falls outside the 9-to-5 in Incheon but lands inside working hours in Eastern Standard Time.

Incheon
11pm
Eastern Standard Time
10am
Right now
10:42amKST · UTC+09:00 · Sat, Jun 27
9:42pmEDT · UTC-04:00 · Fri, Jun 26
Read across to convert
Incheon
KST · UTC+09:00
10:42am ☀
Eastern Standard Time
EDT · UTC-04:00
9:42pm ☾
Pinned11pmIncheon=10amEastern Standard Time
12amSat
11amFri ·−1d
WORK
1am
12pmFri ·−1d
WORK
2am
1pmFri ·−1d
WORK
3am
2pmFri ·−1d
WORK
4am
3pmFri ·−1d
WORK
5am
4pmFri ·−1d
WORK
6am
5pmFri ·−1d
7am
6pmFri ·−1d
8am
7pmFri ·−1d
9am
WORK
8pmFri ·−1d
NOW
10am
WORK
9pmFri ·−1d
11am
WORK
10pmFri ·−1d
12pm
WORK
11pmFri ·−1d
1pm
WORK
12amSat
2pm
WORK
1am
3pm
WORK
2am
4pm
WORK
3am
5pm
4am
6pm
5am
7pm
6am
8pm
7am
9pm
8am
10pm
9am
WORK
PINNED
11pm
10am
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Incheon
7am–8am
=
Eastern Standard Time
6pm–7pm
previous day
Popular conversions

Quick reference.

9amIncheon=8pmEastern Standard Time · prev day
12pmIncheon=11pmEastern Standard Time · prev day
3pmIncheon=2amEastern Standard Time
5pmIncheon=4amEastern Standard Time
9pmIncheon=8amEastern Standard Time
In context

What each side covers.

Incheon
KST · UTC+09:00
10:42am
Cities on this clock
Eastern Standard Time
EDT · UTC-04:00
9:42pm
Did you mean…? “EDT” is shared by several places. This page shows Eastern Standard Time (US & Canada) — or switch to Australian Eastern Standard Time.

Frequently asked

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

What is the time difference between Incheon and Eastern Standard Time?
Incheon is 13 hours ahead of Eastern 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 11pm in Incheon, what time is it in Eastern Standard Time?
11pm in Incheon is 10am in Eastern Standard Time. It falls outside the 9-to-5 in Incheon but lands inside working hours in Eastern Standard Time. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Incheon and Eastern Standard Time?
There's no comfortable 9-to-5 overlap between Incheon and Eastern 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 — KST and EDT — 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.