Seoul to Uniondale time converter

Uniondale is 13 hours behind Seoul. When it is 9:00 AM in Seoul, it is 8:00 PM (Tue, Oct 20) in Uniondale.

Seoul KST

Wednesday, October 21, 2026

Uniondale EDT

Wednesday, October 21, 2026

Seoul
South Korea
Wed, Oct 21
KSTUTC+9
Uniondale
New York, United States
Wed, Oct 21
EDTUTC-4-13h
Finding your time zone…
Shared working hours (9:00–18:00)

Seoul to Uniondale conversion table

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

SeoulUniondale
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 Uniondale): 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 Uniondale switch clocks on different dates:

  • Oct 21, 2026 – Nov 1, 2026: -13h
  • Nov 1, 2026 – Mar 14, 2027: -14h
  • Mar 14, 2027 – Oct 21, 2027: -13h

Distance

Seoul and Uniondale are 11,064 km (6,875 miles) apart in a straight line.

More conversions

Uniondale to SeoulSeoul to New YorkSeoul to LondonSeoul to Los AngelesSeoul to ChicagoSeoul to TorontoSeoul to São PauloSeoul to ParisSeoul to BerlinSeoul to MoscowSeoul to DubaiSeoul to New DelhiSeoul to Bangkok
New York to UniondaleLondon to UniondaleLos Angeles to UniondaleChicago to UniondaleToronto to UniondaleSão Paulo to UniondaleParis to UniondaleBerlin to UniondaleMoscow to UniondaleDubai to UniondaleNew Delhi to UniondaleBangkok to Uniondale

Questions and answers

What is the time difference between Seoul and Uniondale?

Uniondale is 13 hours behind Seoul.

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

When it is 9:00 AM in Seoul, it is 8:00 PM (Tue, Oct 20) in Uniondale.

When is the best time to call Uniondale 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 Uniondale): working hours on one side, early or late on the other.

Does the time difference between Seoul and Uniondale change?

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