When it's 9:00 am in New York, it's 10:00 pm in Seoul (11:00 pm from November to March). Your working days don't overlap at all, so someone starts early or stays late for every call.
Convert Eastern Standard Time (EST) to Korea Standard Time (KST) for any date and time.
Korea Standard Time is 13 hours ahead of Eastern Time from March to November, and 14 hours ahead the rest of the year.
Right now Eastern Time is on EST (UTC−5) and KST is UTC+9. Eastern Time switches to daylight saving time on 14 March 2027.
9:00 am to 5:00 pm EST is 11:00 pm KST to 7:00 am KST the next day.
Eastern TimeReference
US & Canada
Tue, Nov 3
Korea Standard Time
South Korea
Wed, Nov 4Next day
No shared working hours on Tue, Nov 3. Closest fit: 4:00 PM–5:00 PM and 7:00 PM–8:00 PM in Eastern Time, when 1 of 2 are at work and the rest are nearest their day.
Share a booking link insteadWorking hours: 9:00 AM–5:00 PM, Monday to FridayClosest fit
Every hour of the day in EST, converted to KST. Hatched cells are working hours (9:00 am to 5:00 pm); rows with the accent bar are working hours in both zones.
| EST / EDT | KST (with EST)Until 14 March 2027 | KST (with EDT)From 14 March 2027 |
|---|---|---|
| 12:00 am | 2:00 pm KST | 1:00 pm KST |
| 1:00 am | 3:00 pm KST | 2:00 pm KST |
| 2:00 am | 4:00 pm KST | 3:00 pm KST |
| 3:00 am | 5:00 pm KST | 4:00 pm KST |
| 4:00 am | 6:00 pm KST | 5:00 pm KST |
| 5:00 am | 7:00 pm KST | 6:00 pm KST |
| 6:00 am | 8:00 pm KST | 7:00 pm KST |
| 7:00 am | 9:00 pm KST | 8:00 pm KST |
| 8:00 am | 10:00 pm KST | 9:00 pm KST |
| 9:00 am | 11:00 pm KST | 10:00 pm KST |
| 10:00 am | 12:00 am KST(next day) | 11:00 pm KST |
| 11:00 am | 1:00 am KST(next day) | 12:00 am KST(next day) |
| 12:00 pm | 2:00 am KST(next day) | 1:00 am KST(next day) |
| 1:00 pm | 3:00 am KST(next day) | 2:00 am KST(next day) |
| 2:00 pm | 4:00 am KST(next day) | 3:00 am KST(next day) |
| 3:00 pm | 5:00 am KST(next day) | 4:00 am KST(next day) |
| 4:00 pm | 6:00 am KST(next day) | 5:00 am KST(next day) |
| 5:00 pm | 7:00 am KST(next day) | 6:00 am KST(next day) |
| 6:00 pm | 8:00 am KST(next day) | 7:00 am KST(next day) |
| 7:00 pm | 9:00 am KST(next day) | 8:00 am KST(next day) |
| 8:00 pm | 10:00 am KST(next day) | 9:00 am KST(next day) |
| 9:00 pm | 11:00 am KST(next day) | 10:00 am KST(next day) |
| 10:00 pm | 12:00 pm KST(next day) | 11:00 am KST(next day) |
| 11:00 pm | 1:00 pm KST(next day) | 12:00 pm KST(next day) |
A 9-to-5 working day in EST and one in KST don't overlap. The closest fit is 4:00 pm EST (6:00 am KST the next day), when one of you starts early or stays late.
Eastern Standard Time is UTC−5.
New York, Florida, Georgia, the Carolinas, Ohio, Michigan and the rest of the East Coast, plus Ontario and Quebec in Canada. Panama, Jamaica and Cancún stay on EST all year. ET is the short form for the whole zone.
Korea Standard Time is UTC+9.
South Korea, with no daylight saving time. North Korea uses the same offset.