Seoul is 14 hours ahead of Detroit during EST, and 13 hours ahead during EDT. Detroit uses Eastern Time (EST/EDT) while Seoul uses Korea Standard Time (KST, UTC+9). When it's 9:00 AM in Detroit, it's 11:00 PM the same day in Seoul.
South Korea does not observe daylight saving time while Detroit does, so the difference varies between 13-14 hours throughout the year.
Best calling time: 7:00 PM - 11:00 PM Detroit time. This corresponds to 9:00 AM - 1:00 PM the next day in Seoul, catching morning business hours in South Korea.
Detroit and Seoul have strong automotive industry connections. Hyundai and Kia have significant operations in the US, and Korean automakers maintain close ties with Detroit's automotive ecosystem.