Cupertino, United States
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America/Los_AngelesGMT-07:00
Seoul, South Korea
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Asia/SeoulGMT+09:00
16h
Time Difference
0h
Business Hours Overlap
Limited
Good Call Window
Hour-by-Hour Time Conversion
| Cupertino | Seoul | Status |
|---|---|---|
| 12:00 AM | 4:00 PM | Work in Seoul |
| 1:00 AM | 5:00 PM | |
| 2:00 AM | 6:00 PM | |
| 3:00 AM | 7:00 PM | |
| 4:00 AM | 8:00 PM | |
| 5:00 AM | 9:00 PM | |
| 6:00 AM | 10:00 PM | |
| 7:00 AM | 11:00 PM | |
| 8:00 AM | 12:00 AM | |
| 9:00 AM | 1:00 AM | Work in Cupertino |
| 10:00 AM | 2:00 AM | Work in Cupertino |
| 11:00 AM | 3:00 AM | Work in Cupertino |
| 12:00 PM | 4:00 AM | Work in Cupertino |
| 1:00 PM | 5:00 AM | Work in Cupertino |
| 2:00 PM | 6:00 AM | Work in Cupertino |
| 3:00 PM | 7:00 AM | Work in Cupertino |
| 4:00 PM | 8:00 AM | Work in Cupertino |
| 5:00 PM | 9:00 AM | Work in Seoul |
| 6:00 PM | 10:00 AM | Work in Seoul |
| 7:00 PM | 11:00 AM | Work in Seoul |
| 8:00 PM | 12:00 PM | Work in Seoul |
| 9:00 PM | 1:00 PM | Work in Seoul |
| 10:00 PM | 2:00 PM | Work in Seoul |
| 11:00 PM | 3:00 PM | Work in Seoul |
More Time Comparisons
About the Time Difference Between Cupertino and Seoul
The time difference between Cupertino, United States and Seoul, South Korea is 16 hours ahead.Cupertino operates on the America/Los_Angeles timezone (GMT-07:00), while Seoul uses Asia/Seoul (GMT+09:00).
Scheduling Tips
- Business hours overlap: There are 0 hours when both cities are within typical work hours (9 AM - 5 PM).
- Best call times: Schedule calls during the green-highlighted hours in the conversion table above for optimal timing.
- Daylight Saving Time: Remember that the time difference may change during DST transitions. Always verify current times before important meetings.
Frequently Asked Questions
When it's noon in Cupertino, what time is it in Seoul?
When it's 12:00 PM (noon) in Cupertino, it's 4:00 AM in Seoul.