The short answer

8am in Atlantic Daylight Time is 8pm in Korea Standard Time.

Atlantic Daylight Time is 12 hours behind Korea Standard Time. That's already evening in Korea Standard Time, after the typical working day ends.

Atlantic Daylight Time
8am
Korea Standard Time
8pm
Right now
6:14amADT · UTC-03:00 · Tue, Aug 18
6:14pmKST · UTC+09:00 · Tue, Aug 18
Read across to convert
Atlantic Daylight Time
ADT · UTC-03:00
6:14am ☀
Korea Standard Time
KST · UTC+09:00
6:14pm ☾
Pinned8amAtlantic Daylight Time=8pmKorea Standard Time
12amTue
12pm
WORK
1am
1pm
WORK
2am
2pm
WORK
3am
3pm
WORK
4am
4pm
WORK
5am
5pm
NOW
6am
6pm
7am
7pm
PINNED
8am
8pm
9am
WORK
9pm
10am
WORK
10pm
11am
WORK
11pm
12pm
WORK
12amWed ·+1d
1pm
WORK
1amWed ·+1d
2pm
WORK
2amWed ·+1d
3pm
WORK
3amWed ·+1d
4pm
WORK
4amWed ·+1d
5pm
5amWed ·+1d
6pm
6amWed ·+1d
7pm
7amWed ·+1d
8pm
8amWed ·+1d
9pm
9amWed ·+1d
WORK
10pm
10amWed ·+1d
WORK
11pm
11amWed ·+1d
WORK
daylightnightworking hoursoverlap
Best time to meet
No shared working hours.

Atlantic Daylight Time and Korea Standard Time are too far apart for a working-day overlap. The least-unsociable option is an early-morning call on one side and an evening one on the other — or hand work off asynchronously and let the planet do the waiting.

Popular conversions

Quick reference.

9amAtlantic Daylight Time=9pmKorea Standard Time
12pmAtlantic Daylight Time=12amKorea Standard Time · next day
3pmAtlantic Daylight Time=3amKorea Standard Time · next day
5pmAtlantic Daylight Time=5amKorea Standard Time · next day
9pmAtlantic Daylight Time=9amKorea Standard Time · next day
In context

What each side covers.

Atlantic Daylight Time
ADT · UTC-03:00
6:14am

Canada & Caribbean

Korea Standard Time
KST · UTC+09:00
6:14pm
Cities on this clock

Frequently asked

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

What is the time difference between Atlantic Daylight Time and Korea Standard Time?
Atlantic Daylight Time is 12 hours behind Korea 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 8am in Atlantic Daylight Time, what time is it in Korea Standard Time?
8am in Atlantic Daylight Time is 8pm in Korea Standard Time. That's already evening in Korea 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 Atlantic Daylight Time and Korea Standard Time?
There's no comfortable 9-to-5 overlap between Atlantic Daylight Time and Korea 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 — ADT 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.