Best Meeting Time: New York to Seoul
🕐 Live Timezone Overlap: New York & Seoul
New York and Seoul sit 13 hours apart, leaving no overlap between standard 9am–6pm working days. When New York opens, Seoul has already closed for the evening. When Seoul begins its morning, Manhattan is deep in the previous night. Finance teams on both coasts work around the NYSE's 9:30am ET bell, but that slot lands at 10:30pm or 11:30pm Korea Standard Time depending on the season. The gap forces one side into antisocial hours for every live call.
Time Difference: New York and Seoul
Seoul is currently 13 hours ahead of New York. The live offsets are New York UTC-4 and Seoul UTC+9. New York observes daylight saving and Seoul does not, so the offset shifts twice a year if both sides aren't already aligned.
Seoul holds UTC+9 year-round because South Korea does not observe DST. New York switches between UTC−5 in winter and UTC−4 in summer. The 13-hour gap widens to 14 hours when New York falls back in November, then narrows again each March when clocks spring forward. That one-hour swing changes whether a late New York afternoon lands at midnight or 1am in Seoul.
Best Times to Meet
Because the relationship offers 0 hours of in-hours overlap, one city must compromise. New York teams often schedule 7–8am ET calls, catching Seoul colleagues before their 9pm close in summer or 10pm in winter. Seoul participants sometimes join after dinner, though Friday team dinners make late calls uncommon on that day. Alternatively, a New York evening slot around 7–8pm ET lands at Seoul's 8–9am, allowing the Korean side to start early rather than finish late. Neither window is comfortable, so many teams batch decisions into async updates rather than forcing daily synchronous check-ins.
Working Hours Overlap Explained
New York operates on America/New_York (currently UTC-4). Seoul operates on Asia/Seoul (currently UTC+9). The table below maps a standard 9:00 AM–6:00 PM day in New York to Seoul's local time.
| New York time | Seoul time | Status |
|---|---|---|
| 9:00 AM | 10:00 PM | Seoul outside hours |
| 10:00 AM | 11:00 PM | Seoul outside hours |
| 11:00 AM | 12:00 AM | Seoul outside hours |
| 12:00 PM | 1:00 AM | Seoul outside hours |
| 1:00 PM | 2:00 AM | Seoul outside hours |
| 2:00 PM | 3:00 AM | Seoul outside hours |
| 3:00 PM | 4:00 AM | Seoul outside hours |
| 4:00 PM | 5:00 AM | Seoul outside hours |
| 5:00 PM | 6:00 AM | Seoul outside hours |
| 6:00 PM | 7:00 AM | Seoul outside hours |
Tips for Scheduling Across New York and Seoul
- Record key decisions in writing immediately after each call; the 13-hour gap means clarifications take a full day to complete.
- Rotate meeting times monthly so neither New York nor Seoul always bears the antisocial slot, preserving fairness across quarters.
- Tag emails with expected response windows; a Seoul morning question sent at 6pm New York time will not get an answer until the following day.
- Use the NYSE opening at 9:30am ET as a coordination anchor for finance discussions, even though it falls near midnight in Seoul.
- Check both Seollal and Chuseok dates early each year; the lunar calendar shifts these holidays by several weeks between years.
Public Holidays and Working Weeks
Both cities default to Monday–Friday, 9am–6pm schedules, though South Korea's 52-hour weekly cap since 2018 has formalised boundaries that many New York finance desks still exceed. Seollal and Chuseok each bring three to four days of national closure in Seoul, while New York empties around Thanksgiving and the December 24–January 2 stretch. Scheduling across both calendars means checking two sets of public holidays before locking quarterly planning calls.