Seoul to Syosset time converter

Syosset is 13 hours behind Seoul. When it is 9:00 AM in Seoul, it is 8:00 PM (Mon, Oct 19) in Syosset.

Seoul KST

Tuesday, October 20, 2026

Syosset EDT

Tuesday, October 20, 2026

Seoul
South Korea
Tue, Oct 20
KSTUTC+9
Syosset
New York, United States
Tue, Oct 20
EDTUTC-4-13h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Syosset conversion table

Every hour of today in Seoul and the matching time in Syosset. Light rows are typical working hours (9:00–18:00).

SeoulSyosset
12:00 AM11:00 AM−1 day
1:00 AM12:00 PM−1 day
2:00 AM1:00 PM−1 day
3:00 AM2:00 PM−1 day
4:00 AM3:00 PM−1 day
5:00 AM4:00 PM−1 day
6:00 AM5:00 PM−1 day
7:00 AM6:00 PM−1 day
8:00 AM7:00 PM−1 day
9:00 AM8:00 PM−1 day
10:00 AM9:00 PM−1 day
11:00 AM10:00 PM−1 day
12:00 PM11:00 PM−1 day
1:00 PM12:00 AM
2:00 PM1:00 AM
3:00 PM2:00 AM
4:00 PM3:00 AM
5:00 PM4:00 AM
6:00 PM5:00 AM
7:00 PM6:00 AM
8:00 PM7:00 AM
9:00 PM8:00 AM
10:00 PM9:00 AM
11:00 PM10:00 AM

Best time to call or meet

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Seoul (8:00 PM – 10:00 PM in Syosset): working hours on one side, early or late on the other.

Daylight saving time and the difference

The difference changes during the year because Seoul and Syosset switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 20, 2027: -13h

Distance

Seoul and Syosset are 11,053 km (6,868 miles) apart in a straight line.

More conversions

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New York to SyossetLondon to SyossetLos Angeles to SyossetChicago to SyossetToronto to SyossetSão Paulo to SyossetParis to SyossetBerlin to SyossetMoscow to SyossetDubai to SyossetNew Delhi to SyossetBangkok to Syosset

Questions and answers

What is the time difference between Seoul and Syosset?

Syosset is 13 hours behind Seoul.

What time is it in Syosset when it is 9 AM in Seoul?

When it is 9:00 AM in Seoul, it is 8:00 PM (Mon, Oct 19) in Syosset.

When is the best time to call Syosset from Seoul?

Working hours don't overlap fully. The closest fit is 9:00 AM – 11:00 AM in Seoul (8:00 PM – 10:00 PM in Syosset): working hours on one side, early or late on the other.

Does the time difference between Seoul and Syosset change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.