New York City to Seongnam-si
Converting a fixed time. America/New_York → Asia/Seoul · 11,062 km (6,870 miles) apart
Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change).
Clocks here do not change — this zone stays on the same offset all year.
Convert a specific time minutes work, not just whole hours
Hour by hour
| New York City | Seongnam-si | 24h | Good to call? |
|---|---|---|---|
| 12am | 1pm | 00:00 → 13:00 | asleep in New York City |
| 1am | 2pm | 01:00 → 14:00 | asleep in New York City |
| 2am | 3pm | 02:00 → 15:00 | asleep in New York City |
| 3am | 4pm | 03:00 → 16:00 | asleep in New York City |
| 4am | 5pm | 04:00 → 17:00 | asleep in New York City |
| 5am now | 6pm | 05:00 → 18:00 | asleep in New York City |
| 6am | 7pm | 06:00 → 19:00 | asleep in New York City |
| 7am | 8pm | 07:00 → 20:00 | awake, not at work |
| 8am | 9pm | 08:00 → 21:00 | awake, not at work |
| 9am | 10pm | 09:00 → 22:00 | asleep in Seongnam-si |
| 10am | 11pm | 10:00 → 23:00 | asleep in Seongnam-si |
| 11am | 12am Fri | 11:00 → 00:00 | asleep in Seongnam-si |
| 12pm | 1am Fri | 12:00 → 01:00 | asleep in Seongnam-si |
| 1pm | 2am Fri | 13:00 → 02:00 | asleep in Seongnam-si |
| 2pm | 3am Fri | 14:00 → 03:00 | asleep in Seongnam-si |
| 3pm | 4am Fri | 15:00 → 04:00 | asleep in Seongnam-si |
| 4pm | 5am Fri | 16:00 → 05:00 | asleep in Seongnam-si |
| 5pm | 6am Fri | 17:00 → 06:00 | asleep in Seongnam-si |
| 6pm | 7am Fri | 18:00 → 07:00 | awake, not at work |
| 7pm | 8am Fri | 19:00 → 08:00 | awake, not at work |
| 8pm | 9am Fri | 20:00 → 09:00 | awake, not at work |
| 9pm | 10am Fri | 21:00 → 10:00 | awake, not at work |
| 10pm | 11am Fri | 22:00 → 11:00 | asleep in New York City |
| 11pm | 12pm Fri | 23:00 → 12:00 | asleep in New York City |
Call times
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
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Questions people ask
What time is it in Seongnam-si when it is 9:00 am in New York City?
10:00 pm in Seongnam-si the same day.
How many hours ahead is Seongnam-si of New York City?
Seongnam-si is 13 hours ahead New York City. That gap is not fixed: it changes when either place starts or ends daylight saving. The table on this page is recalculated for today, so it is already correct for the current season.
What is the best time to call between New York City and Seongnam-si?
There is no hour when both places are inside normal working hours. The least bad slot is usually early morning at the western end.
When does the difference between New York City and Seongnam-si change?
New York City: Clocks go back 1 hour on Sunday, 1st November 2026, at 1:59 am local time (1:00 am after the change). Seongnam-si does not change its clocks, so the gap shifts by an hour on that date.