Love Taps / Time zones / Seattle and Seoul
Time difference between Seattle and Seoul
Seoul is 16 hours ahead of Seattle. From November 1, 2026: Seoul is 17 hours ahead of Seattle.
| Seattle | United States · America/Los_Angeles · UTC−7 |
|---|---|
| Seoul | South Korea · Asia/Seoul · UTC+9 |
| Difference now | Seoul is 16 hours ahead of Seattle |
| Distance | 5,171 miles (8,322 km) |
Daylight saving changes in the next 12 months
| Period | Difference |
|---|---|
| Until November 1, 2026 | Seoul is 16 hours ahead of Seattle |
| November 1, 2026 – March 14, 2027 | Seoul is 17 hours ahead of Seattle |
| From March 14, 2027 | Seoul is 16 hours ahead of Seattle |
Seattle observes daylight saving time. Seoul does not observe it. Dates are the local dates on which each change takes effect.
Best times to call
Both awake while the difference is 16 hours
Hours when it is between 8:00 am and 11:00 pm in both cities:
- 4:00 pm – 11:00 pm in Seattle = 8:00 am – 3:00 pm in Seoul (next day) · 7 hours
Outside working hours on workdays while the difference is 16 hours
Hours when both cities are awake and neither is between 9:00 am and 5:00 pm:
None. On workdays at least one of you is at work or asleep at every hour, so weekend calls and messages that can wait are the practical options.
Both awake while the difference is 17 hours
Hours when it is between 8:00 am and 11:00 pm in both cities:
- 3:00 pm – 11:00 pm in Seattle = 8:00 am – 4:00 pm in Seoul (next day) · 8 hours
Outside working hours on workdays while the difference is 17 hours
Hours when both cities are awake and neither is between 9:00 am and 5:00 pm:
None. On workdays at least one of you is at work or asleep at every hour, so weekend calls and messages that can wait are the practical options.
Good morning and goodnight
- 8:00 am in Seattle is 12:00 am in Seoul the next day.
- 10:00 pm in Seattle is 2:00 pm in Seoul the next day.
- 8:00 am in Seoul is 4:00 pm in Seattle the previous day.
A message sent at one person's bedtime often lands during the other's day. Love Taps has Good morning and Goodnight moods for this: one tap, no reply expected.
Hour by hour
Current offsets. Highlighted rows are hours when both cities are between 8:00 am and 11:00 pm.
| Seattle | Seoul | 8 am – 11 pm |
|---|---|---|
| 12:00 am | 4:00 pm | Seattle asleep |
| 1:00 am | 5:00 pm | Seattle asleep |
| 2:00 am | 6:00 pm | Seattle asleep |
| 3:00 am | 7:00 pm | Seattle asleep |
| 4:00 am | 8:00 pm | Seattle asleep |
| 5:00 am | 9:00 pm | Seattle asleep |
| 6:00 am | 10:00 pm | Seattle asleep |
| 7:00 am | 11:00 pm | Both asleep |
| 8:00 am | 12:00 am +1 day | Seoul asleep |
| 9:00 am | 1:00 am +1 day | Seoul asleep |
| 10:00 am | 2:00 am +1 day | Seoul asleep |
| 11:00 am | 3:00 am +1 day | Seoul asleep |
| 12:00 pm | 4:00 am +1 day | Seoul asleep |
| 1:00 pm | 5:00 am +1 day | Seoul asleep |
| 2:00 pm | 6:00 am +1 day | Seoul asleep |
| 3:00 pm | 7:00 am +1 day | Seoul asleep |
| 4:00 pm | 8:00 am +1 day | Both awake |
| 5:00 pm | 9:00 am +1 day | Both awake |
| 6:00 pm | 10:00 am +1 day | Both awake |
| 7:00 pm | 11:00 am +1 day | Both awake |
| 8:00 pm | 12:00 pm +1 day | Both awake |
| 9:00 pm | 1:00 pm +1 day | Both awake |
| 10:00 pm | 2:00 pm +1 day | Both awake |
| 11:00 pm | 3:00 pm +1 day | Seattle asleep |
Other long-distance pairs
- New York and Seattle · 3 hours
- Chicago and Seattle · 2 hours
- Los Angeles and Seattle · 0 hours
- Seattle and Dallas · 2 hours
- Honolulu and Seattle · 3 hours
- Seattle and Vancouver · 0 hours
- Seattle and London · 8 hours
- Seattle and Manila · 15 hours
More: long-distance relationship ideas · holiday countdowns · all time differences
Computed October 9, 2026. Love Taps reference pages.