EST to KST
On Oct 23, 2026, Korea Standard Time is 13 hours ahead of Eastern Time: 9:00 AM EDT is 10:00 PM KST. The gap changes during the year because of daylight saving time; the dates are below.
KST vs EST over the next 12 months
| Period | KST is | Example |
|---|---|---|
| Oct 23, 2026 to Nov 1, 2026 | 13 hours ahead | 9:00 AM EDT = 10:00 PM KST |
| Nov 1, 2026 to Mar 14, 2027 | 14 hours ahead | 9:00 AM EST = 11:00 PM KST |
| Mar 14, 2027 onwards | 13 hours ahead | 9:00 AM EDT = 10:00 PM KST |
EST to KST conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Eastern Time | Korea Standard Time |
|---|---|
| 12:00 AM | 1:00 PM |
| 1:00 AM | 2:00 PM |
| 2:00 AM | 3:00 PM |
| 3:00 AM | 4:00 PM |
| 4:00 AM | 5:00 PM |
| 5:00 AM | 6:00 PM |
| 6:00 AM | 7:00 PM |
| 7:00 AM | 8:00 PM |
| 8:00 AM | 9:00 PM |
| 9:00 AM | 10:00 PM |
| 10:00 AM | 11:00 PM |
| 11:00 AM | 12:00 AM (next day) |
| 12:00 PM | 1:00 AM (next day) |
| 1:00 PM | 2:00 AM (next day) |
| 2:00 PM | 3:00 AM (next day) |
| 3:00 PM | 4:00 AM (next day) |
| 4:00 PM | 5:00 AM (next day) |
| 5:00 PM | 6:00 AM (next day) |
| 6:00 PM | 7:00 AM (next day) |
| 7:00 PM | 8:00 AM (next day) |
| 8:00 PM | 9:00 AM (next day) |
| 9:00 PM | 10:00 AM (next day) |
| 10:00 PM | 11:00 AM (next day) |
| 11:00 PM | 12:00 PM (next day) |
Best time for a meeting
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour on a weekday: 7:00 PM–8:00 PM EDT, which is 8:00 AM–9:00 AM KST.
Comparing more than two places? The meeting planner lines up working hours for up to six cities.
Daylight saving time
Eastern Time (EST/EDT)
- Nov 1, 2026: clocks go back 1 hour at 2:00 AM (UTC−4 → UTC−5)
- Mar 14, 2027: clocks go forward 1 hour at 2:00 AM (UTC−5 → UTC−4)
Where these clocks are used
- Eastern Time (EST/EDT): New York, Toronto, Miami, Atlanta. IANA zone
America/New_York. - Korea Standard Time (KST): Seoul, Busan. IANA zone
Asia/Seoul.
Questions
What time is it in KST when it is 9 AM EST?
On Oct 23, 2026, 9:00 AM EDT is 10:00 PM KST. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.
How many hours ahead of EST is KST?
It depends on the date. Oct 23, 2026 to Nov 1, 2026: KST is 13 hours ahead. Nov 1, 2026 to Mar 14, 2027: KST is 14 hours ahead. Mar 14, 2027 onwards: KST is 13 hours ahead.
Do EST and KST observe daylight saving time?
Eastern Time switches to EDT (UTC−4) in summer and back to EST (UTC−5) in winter. Korea Standard Time stays on UTC+9 all year.
What is the best time for a meeting between EST and KST?
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour on a weekday: 7:00 PM–8:00 PM EDT, which is 8:00 AM–9:00 AM KST.
Scheduling across time zones? Share one Caly booking link and every guest sees your free times in their own zone. Try Caly free
Related conversions
- KST to EST (reverse)
- EST to CST
- EST to MST
- EST to PST
- EST to UTC
- EST to GMT
- EST to CET
- EST to IST
- EST to SGT
- EST to JST
- EST to AEST
- EST to AKST
- All time zones
Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.