KST to EST Converter & Meeting Planner
Quick answer: 9:00 AM KST = 7:00 PM EST (fixed +09:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Korea Standard Time (KST) and Eastern Standard Time (EST)? You need to account for the standard time difference. Eastern Standard Time is normally 14 hours behind Korea Standard Time. Whether you are coordinating between teams in Seoul and Busan and New York and Toronto, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM KST = 10:00 AM EST. The full 24-hour KST to EST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM KST = 1:00 AM EST.
| KST Time | EST Time |
|---|---|
| 12:00 AM (00:00) | 10:00 AM (10:00)-1 day |
| 1:00 AM (01:00) | 11:00 AM (11:00)-1 day |
| 2:00 AM (02:00) | 12:00 PM (12:00)-1 day |
| 3:00 AM (03:00) | 1:00 PM (13:00)-1 day |
| 4:00 AM (04:00) | 2:00 PM (14:00)-1 day |
| 5:00 AM (05:00) | 3:00 PM (15:00)-1 day |
| 6:00 AM (06:00) | 4:00 PM (16:00)-1 day |
| 7:00 AM (07:00) | 5:00 PM (17:00)-1 day |
| 8:00 AM (08:00) | 6:00 PM (18:00)-1 day |
| 9:00 AM (09:00) | 7:00 PM (19:00)-1 day |
| 10:00 AM (10:00) | 8:00 PM (20:00)-1 day |
| 11:00 AM (11:00) | 9:00 PM (21:00)-1 day |
| 12:00 PM (12:00) | 10:00 PM (22:00)-1 day |
| 1:00 PM (13:00) | 11:00 PM (23:00)-1 day |
| 2:00 PM (14:00) | 12:00 AM (00:00) |
| 3:00 PM (15:00) | 1:00 AM (01:00) |
| 4:00 PM (16:00) | 2:00 AM (02:00) |
| 5:00 PM (17:00) | 3:00 AM (03:00) |
| 6:00 PM (18:00) | 4:00 AM (04:00) |
| 7:00 PM (19:00) | 5:00 AM (05:00) |
| 8:00 PM (20:00) | 6:00 AM (06:00) |
| 9:00 PM (21:00) | 7:00 AM (07:00) |
| 10:00 PM (22:00) | 8:00 AM (08:00) |
| 11:00 PM (23:00) | 9:00 AM (09:00) |
Best time to call New York from Seoul
For most work calls, compare the normal business day in Seoul (KST) with the business day in New York (EST). KST commonly covers East Asia, while EST is mainly associated with North America, Caribbean, Central America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 10:00 PM KST, which reaches 9:00 AM EST near the start of their workday.
- DST Safety: KST or EST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Korea Exchange (KRX): 09:00-15:30 local time in Seoul.
- NYSE & NASDAQ: 09:30-16:00 local time in New York.
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Frequently Asked Questions
What is the time difference between KST and EST?
During standard time, Eastern Standard Time is 14 hours behind Korea Standard Time.
Does South Korea observe Daylight Saving Time?
South Korea does not observe Daylight Saving Time and has not done so since 1988, when DST was discontinued following the Seoul Summer Olympics. KST remains fixed at UTC+9:00 every day of the year, meaning the offset between Seoul and any DST-observing country shifts by one hour twice annually when those countries change their clocks.
Are KST and JST the same?
Yes, Korea Standard Time (KST) and Japan Standard Time (JST) share the identical UTC+9:00 offset, and neither country observes Daylight Saving Time. Seoul and Tokyo run on exactly the same clock year-round, which directly supports the deep semiconductor, automotive, and consumer electronics supply chain integration between the two economies.
Is EST the same as Eastern Time (ET)?
Not exactly. 'Eastern Time' (ET) is a broad geographical term. EST is the specific UTC-05:00 offset used in winter, while EDT (Eastern Daylight Time) is the UTC-04:00 offset used during summer.
Does Florida use EST?
Most of Florida is in the Eastern Time Zone. However, the western part of the Florida Panhandle operates on Central Time (CST/CDT).