Houston to Seoul Time Difference
Seoul is 14 hours ahead of Houston. When it's 07:57:45 AM in Houston, it's 09:57:45 PM in Seoul.
How Many Hours Ahead Is Seoul From Houston?
Seoul is 14 hours ahead of Houston. So Houston is 14 hours behind Seoul looking the other way — the same gap, described from the other end.
In practice that means a working day in Houston starts when it is already 11:00 PM in Seoul. The gap is not fixed all year: it becomes 15 hours on Sunday, November 1, 2026, when Houston changes its clocks.
Best Time to Call Houston and Seoul
Standard 9-to-5 hours in Houston and Seoul never overlap, so someone has to take the call outside their working day. The most workable window is 5:00 PM to 10:00 PM in Houston, which is 7:00 AM to 12:00 PM in Seoul.
both at work Houston only Seoul only neither — hours shown along the strip are Houston local time.
Convert a Specific Time
Pick any date and time in Houston to see the exact equivalent in Seoul.
Common Times Converted
Houston time on the left, Seoul time on the right.
Houston to Seoul: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Houston. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Houston | Seoul | Working hours |
|---|---|---|
| 12:00 AM | 2:00 PM | Seoul only |
| 1:00 AM | 3:00 PM | Seoul only |
| 2:00 AM | 4:00 PM | Seoul only |
| 3:00 AM | 5:00 PM | — |
| 4:00 AM | 6:00 PM | — |
| 5:00 AM | 7:00 PM | — |
| 6:00 AM | 8:00 PM | — |
| 7:00 AM | 9:00 PM | — |
| 8:00 AM | 10:00 PM | — |
| 9:00 AM | 11:00 PM | Houston only |
| 10:00 AM | 12:00 AM next day | Houston only |
| 11:00 AM | 1:00 AM next day | Houston only |
| 12:00 PM | 2:00 AM next day | Houston only |
| 1:00 PM | 3:00 AM next day | Houston only |
| 2:00 PM | 4:00 AM next day | Houston only |
| 3:00 PM | 5:00 AM next day | Houston only |
| 4:00 PM | 6:00 AM next day | Houston only |
| 5:00 PM | 7:00 AM next day | — |
| 6:00 PM | 8:00 AM next day | — |
| 7:00 PM | 9:00 AM next day | Seoul only |
| 8:00 PM | 10:00 AM next day | Seoul only |
| 9:00 PM | 11:00 AM next day | Seoul only |
| 10:00 PM | 12:00 PM next day | Seoul only |
| 11:00 PM | 1:00 PM next day | Seoul only |
Understanding the Houston – Seoul Time Difference
Houston runs on America/Chicago, currently CDT (UTC-5:00). Seoul runs on Asia/Seoul, currently KST (UTC+9:00). The gap of 14 hours is simply the distance between those two offsets.
Houston observes Daylight Saving Time and Seoul does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when Houston adjusts its clocks and the difference becomes 15 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in the United States.
Houston today
Seoul today
Frequently Asked Questions
What is the time difference between Houston and Seoul?
Seoul is currently 14 hours ahead of Houston. That gap becomes 15 hours on Sunday, November 1, 2026, when Houston changes its clocks.
How many hours ahead is Seoul from Houston?
Seoul is 14 hours ahead of Houston. Looking at it the other way, Houston is 14 hours behind Seoul.
What time is it in Seoul when it is 9:00 AM in Houston?
When it is 9:00 AM in Houston, it is 11:00 PM in Seoul.
Is Seoul ahead of or behind Houston?
Seoul is 14 hours ahead of Houston. Seoul reaches each point in the day first, so its working day is already finishing while Houston is still getting started.
What is the best time to call between Houston and Seoul?
Standard business hours in Houston and Seoul do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 5:00 PM to 10:00 PM in Houston, which is 7:00 AM to 12:00 PM in Seoul.
Does the time difference between Houston and Seoul change during the year?
Yes. Houston observes Daylight Saving Time and Seoul does not, so the gap between them shifts during the year. It changes to 15 hours on Sunday, November 1, 2026.
What time zones are Houston and Seoul in?
Houston uses the America/Chicago time zone, currently CDT (UTC-5:00). Seoul uses Asia/Seoul, currently KST (UTC+9:00).