Dallas is typically 15 hours behind Seoul. When it's 11:00 PM in Seoul, it's 8:00 AM the same day in Dallas. South Korea does not observe daylight saving time, but Dallas does.
During US daylight saving time (March to November), the difference is 14 hours. During US standard time (November to March), the difference increases to 15 hours.
Optimal meeting window: 5:00 AM - 7:00 AM Dallas time (7:00 PM - 9:00 PM Seoul, or 8:00 PM - 10:00 PM in winter). Very early morning Dallas catches evening Seoul.
Texas has strong trade ties with South Korea, with Korean electronics and automotive companies having significant operations in the Dallas-Fort Worth metroplex.