EST to KST converter
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 EDT (UTC−4) and KST is UTC+9. Eastern Time switches back to standard time on 1 November 2026.
US clocks go back on 1 November 2026. From then, KST is 14 hours ahead of EST.
9:00 am to 5:00 pm EDT is 10:00 pm KST to 6:00 am KST the next day.
- 8:00 am EDT is 9:00 pm KST
- 9:00 am EDT is 10:00 pm KST
- 10:00 am EDT is 11:00 pm KST
- 12:00 pm EDT is 1:00 am KST the next day
- 3:00 pm EDT is 4:00 am KST the next day
- 5:00 pm EDT is 6:00 am KST the next day
Hours in Eastern Time, Fri, Oct 23
Eastern Time
US & Canada
Fri, Oct 23
EDT · UTC−4ReferenceOutside working hoursKorea Standard Time
South Korea
Fri, Oct 23
KST · UTC+9+13h from Eastern TimeOutside working hours
No shared working hours on Fri, Oct 23. Pick the slot closest to everyone's working day, or let each person pick from your availability.
Share a booking link insteadWorking hours: 9:00 AM–5:00 PM, Monday to FridayEveryone at work
EST to KST conversion table
Every hour of the day in EDT, converted to KST. Shaded cells are working hours (9:00 am to 5:00 pm); green rows are working hours in both zones.
| EDT / EST | KST (with EDT)Until 1 November 2026; From 14 March 2027 | KST (with EST)1 November 2026 to 14 March 2027 |
|---|---|---|
| 12:00 am | 1:00 pm KST | 2:00 pm KST |
| 1:00 am | 2:00 pm KST | 3:00 pm KST |
| 2:00 am | 3:00 pm KST | 4:00 pm KST |
| 3:00 am | 4:00 pm KST | 5:00 pm KST |
| 4:00 am | 5:00 pm KST | 6:00 pm KST |
| 5:00 am | 6:00 pm KST | 7:00 pm KST |
| 6:00 am | 7:00 pm KST | 8:00 pm KST |
| 7:00 am | 8:00 pm KST | 9:00 pm KST |
| 8:00 am | 9:00 pm KST | 10:00 pm KST |
| 9:00 am | 10:00 pm KST | 11:00 pm KST |
| 10:00 am | 11:00 pm KST | 12:00 am KST(next day) |
| 11:00 am | 12:00 am KST(next day) | 1:00 am KST(next day) |
| 12:00 pm | 1:00 am KST(next day) | 2:00 am KST(next day) |
| 1:00 pm | 2:00 am KST(next day) | 3:00 am KST(next day) |
| 2:00 pm | 3:00 am KST(next day) | 4:00 am KST(next day) |
| 3:00 pm | 4:00 am KST(next day) | 5:00 am KST(next day) |
| 4:00 pm | 5:00 am KST(next day) | 6:00 am KST(next day) |
| 5:00 pm | 6:00 am KST(next day) | 7:00 am KST(next day) |
| 6:00 pm | 7:00 am KST(next day) | 8:00 am KST(next day) |
| 7:00 pm | 8:00 am KST(next day) | 9:00 am KST(next day) |
| 8:00 pm | 9:00 am KST(next day) | 10:00 am KST(next day) |
| 9:00 pm | 10:00 am KST(next day) | 11:00 am KST(next day) |
| 10:00 pm | 11:00 am KST(next day) | 12:00 pm KST(next day) |
| 11:00 pm | 12:00 pm KST(next day) | 1:00 pm KST(next day) |
Best times to meet
A 9-to-5 working day in EDT and one in KST don't overlap. The closest fit is 4:00 pm EDT (5:00 am KST the next day), when one of you starts early or stays late.
About these time zones
EST: Eastern Standard Time
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.
Most places on Eastern Time are on EDT (UTC−4) right now, not EST. People still say "EST" all year, so the times on this page follow the clocks and show EDT until 1 November 2026.
KST: Korea Standard Time
Korea Standard Time is UTC+9.
South Korea, with no daylight saving time. North Korea uses the same offset.
How the difference changes
Right now KST is 13 hours ahead of EDT. From 1 November 2026, when US clocks go back, the difference becomes 14 hours. From 14 March 2027, when US clocks go forward, the difference becomes 13 hours.