KST to EST
On Oct 23, 2026, Eastern Time is 13 hours behind Korea Standard Time: 9:00 AM KST is 8:00 PM EDT the previous day. The gap changes during the year because of daylight saving time; the dates are below.
EST vs KST over the next 12 months
| Period | EST is | Example |
|---|---|---|
| Oct 23, 2026 to Nov 1, 2026 | 13 hours behind | 9:00 AM KST = 8:00 PM EDT (previous day) |
| Nov 1, 2026 to Mar 14, 2027 | 14 hours behind | 9:00 AM KST = 7:00 PM EST (previous day) |
| Mar 14, 2027 onwards | 13 hours behind | 9:00 AM KST = 8:00 PM EDT (previous day) |
KST to EST conversion table
Every hour of a weekday around Oct 23, 2026, in both zones.
| Korea Standard Time | Eastern Time |
|---|---|
| 12:00 AM | 11:00 AM (previous day) |
| 1:00 AM | 12:00 PM (previous day) |
| 2:00 AM | 1:00 PM (previous day) |
| 3:00 AM | 2:00 PM (previous day) |
| 4:00 AM | 3:00 PM (previous day) |
| 5:00 AM | 4:00 PM (previous day) |
| 6:00 AM | 5:00 PM (previous day) |
| 7:00 AM | 6:00 PM (previous day) |
| 8:00 AM | 7:00 PM (previous day) |
| 9:00 AM | 8:00 PM (previous day) |
| 10:00 AM | 9:00 PM (previous day) |
| 11:00 AM | 10:00 PM (previous day) |
| 12:00 PM | 11:00 PM (previous day) |
| 1:00 PM | 12:00 AM |
| 2:00 PM | 1:00 AM |
| 3:00 PM | 2:00 AM |
| 4:00 PM | 3:00 AM |
| 5:00 PM | 4:00 AM |
| 6:00 PM | 5:00 AM |
| 7:00 PM | 6:00 AM |
| 8:00 PM | 7:00 AM |
| 9:00 PM | 8:00 AM |
| 10:00 PM | 9:00 AM |
| 11:00 PM | 10:00 AM |
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: 8:00 AM–9:00 AM KST, which is 7:00 PM–8:00 PM EDT.
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
- Korea Standard Time (KST): Seoul, Busan. IANA zone
Asia/Seoul. - Eastern Time (EST/EDT): New York, Toronto, Miami, Atlanta. IANA zone
America/New_York.
Questions
What time is it in EST when it is 9 AM KST?
On Oct 23, 2026, 9:00 AM KST is 8:00 PM EDT the previous day. 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 behind KST is EST?
It depends on the date. Oct 23, 2026 to Nov 1, 2026: EST is 13 hours behind. Nov 1, 2026 to Mar 14, 2027: EST is 14 hours behind. Mar 14, 2027 onwards: EST is 13 hours behind.
Do KST and EST observe daylight saving time?
Korea Standard Time stays on UTC+9 all year. Eastern Time switches to EDT (UTC−4) in summer and back to EST (UTC−5) in winter.
What is the best time for a meeting between KST and EST?
There is no 9-to-5 overlap; within an 8 AM–8 PM day the zones overlap for 1 hour on a weekday: 8:00 AM–9:00 AM KST, which is 7:00 PM–8:00 PM EDT.
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Related conversions
- EST to KST (reverse)
- CST to EST
- MST to EST
- PST to EST
- UTC to EST
- GMT to EST
- CET to EST
- IST to EST
- SGT to EST
- JST to EST
- AEST to EST
- AKST to EST
- 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.