Time difference
Philadelphia to Seoul Time Difference
Seoul is 13 hours ahead of Philadelphia — when it's 12:00 PM in Philadelphia, it's 1:00 AM the next day in Seoul. (Philadelphia (America/New_York, EDT); Seoul (Asia/Seoul, KST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Seoul is 13 hours ahead of Philadelphia. Standard 9 AM–5 PM business hours in Philadelphia and Seoul do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between Philadelphia and Seoul — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in Philadelphia, it's 10:00 PM in Seoul.
- When it's 9:00 AM in Seoul, it's 8:00 PM the previous day in Philadelphia.
Seoul is currently 13 hours ahead of Philadelphia.
Interactive converter
12:00PM
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Best times to meet
Standard 9 AM – 5 PM hours in Philadelphia and Seoul do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in Philadelphia, or a 6–8 PM meeting in Seoul.
Quick conversion table
| Philadelphia | Seoul |
|---|---|
| 12 AM | 1:00 PM |
| 1 AM | 2:00 PM |
| 2 AM | 3:00 PM |
| 3 AM | 4:00 PM |
| 4 AM | 5:00 PM |
| 5 AM | 6:00 PM |
| 6 AM | 7:00 PM |
| 7 AM | 8:00 PM |
| 8 AM | 9:00 PM |
| 9 AM | 10:00 PM |
| 10 AM | 11:00 PM |
| 11 AM | 12:00 AM (next day) |
| 12 PM | 1:00 AM (next day) |
| 1 PM | 2:00 AM (next day) |
| 2 PM | 3:00 AM (next day) |
| 3 PM | 4:00 AM (next day) |
| 4 PM | 5:00 AM (next day) |
| 5 PM | 6:00 AM (next day) |
| 6 PM | 7:00 AM (next day) |
| 7 PM | 8:00 AM (next day) |
| 8 PM | 9:00 AM (next day) |
| 9 PM | 10:00 AM (next day) |
| 10 PM | 11:00 AM (next day) |
| 11 PM | 12:00 PM (next day) |
Daylight saving
On November 1, 2026, Philadelphia shifts for daylight saving. After that, Seoul will be 14 hours ahead of Philadelphia (currently 13 hours ahead of Philadelphia). The converter and the tables above always reflect the correct offset for the date you pick.
- Philadelphia is currently observing daylight saving time.
- Seoul does not observe daylight saving time.
Frequently asked questions
- Is Seoul ahead of or behind Philadelphia?
- Seoul is 13 hours ahead of Philadelphia.
- How many hours ahead of Philadelphia is Seoul?
- Seoul is 13 hours ahead of Philadelphia.
- What time is 9 AM in Philadelphia in Seoul?
- 9:00 AM in Philadelphia is 10:00 PM in Seoul.
- What time is noon in Philadelphia in Seoul?
- 12:00 PM in Philadelphia is 1:00 AM the next day in Seoul.
- What time is 5 PM in Philadelphia in Seoul?
- 5:00 PM in Philadelphia is 6:00 AM the next day in Seoul. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Philadelphia in Seoul?
- 3:00 PM in Philadelphia is 4:00 AM the next day in Seoul.
- Is Philadelphia currently observing daylight saving time?
- Philadelphia is currently observing daylight saving time (summer time).
- Is Seoul currently observing daylight saving time?
- Seoul does not observe daylight saving time — its UTC offset stays the same all year.
- Do Philadelphia and Seoul observe daylight saving?
- On November 1, 2026, Philadelphia shifts for daylight saving. After that, Seoul will be 14 hours ahead of Philadelphia (currently 13 hours ahead of Philadelphia). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Seoul from Philadelphia?
- Philadelphia and Seoul business hours don't overlap. The closest options are early mornings in Philadelphia or late evenings, when one side stretches outside 9–5.
- When is the best time to call Philadelphia from Seoul?
- Seoul and Philadelphia business hours don't overlap. The closest options are early mornings in Seoul or late evenings, when one side stretches outside 9–5.
- Philadelphia (EDT) to Seoul (KST) — how do I convert quickly?
- Add 13 hours to Philadelphia local time to get Seoul local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- New York to Philadelphia
- London to Philadelphia
- Philadelphia to Tokyo
- Dubai to Philadelphia
- Philadelphia to Singapore
- Los Angeles to Philadelphia
- Philadelphia to Sydney
- Paris to Philadelphia
- Mumbai to Philadelphia
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