Tokyo to Philadelphia Time Difference
Philadelphia is 13 hours behind Tokyo. When it's 12:47:04 AM in Tokyo, it's 11:47:04 AM in Philadelphia.
How Many Hours Behind Is Philadelphia From Tokyo?
Philadelphia is 13 hours behind Tokyo. So Tokyo is 13 hours ahead of Philadelphia looking the other way — the same gap, described from the other end.
In practice that means a working day in Tokyo starts when it is already 8:00 PM the previous day in Philadelphia. The gap is not fixed all year: it becomes 14 hours on Sunday, November 1, 2026, when Philadelphia changes its clocks.
Best Time to Call Tokyo and Philadelphia
Standard 9-to-5 hours in Tokyo and Philadelphia never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 11:00 AM in Tokyo, which is 6:00 PM to 10:00 PM in Philadelphia.
both at work Tokyo only Philadelphia only neither — hours shown along the strip are Tokyo local time.
Convert a Specific Time
Pick any date and time in Tokyo to see the exact equivalent in Philadelphia.
Common Times Converted
Tokyo time on the left, Philadelphia time on the right.
Tokyo to Philadelphia: Full 24-Hour Conversion Table
Based on today, Monday, October 12, 2026 in Tokyo. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Tokyo | Philadelphia | Working hours |
|---|---|---|
| 12:00 AM | 11:00 AM prev day | Philadelphia only |
| 1:00 AM | 12:00 PM prev day | Philadelphia only |
| 2:00 AM | 1:00 PM prev day | Philadelphia only |
| 3:00 AM | 2:00 PM prev day | Philadelphia only |
| 4:00 AM | 3:00 PM prev day | Philadelphia only |
| 5:00 AM | 4:00 PM prev day | Philadelphia only |
| 6:00 AM | 5:00 PM prev day | — |
| 7:00 AM | 6:00 PM prev day | — |
| 8:00 AM | 7:00 PM prev day | — |
| 9:00 AM | 8:00 PM prev day | Tokyo only |
| 10:00 AM | 9:00 PM prev day | Tokyo only |
| 11:00 AM | 10:00 PM prev day | Tokyo only |
| 12:00 PM | 11:00 PM prev day | Tokyo only |
| 1:00 PM | 12:00 AM | Tokyo only |
| 2:00 PM | 1:00 AM | Tokyo only |
| 3:00 PM | 2:00 AM | Tokyo only |
| 4:00 PM | 3:00 AM | Tokyo only |
| 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 | Philadelphia only |
| 11:00 PM | 10:00 AM | Philadelphia only |
Understanding the Tokyo – Philadelphia Time Difference
Tokyo runs on Asia/Tokyo, currently JST (UTC+9:00). Philadelphia runs on America/New_York, currently EDT (UTC-4:00). The gap of 13 hours is simply the distance between those two offsets.
Philadelphia observes Daylight Saving Time and Tokyo does not, so the gap between them shifts by an hour twice a year. The next shift is on Sunday, November 1, 2026, when Philadelphia adjusts its clocks and the difference becomes 14 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Japan · Daylight Saving Time in the United States.
Tokyo today
Philadelphia today
Frequently Asked Questions
What is the time difference between Tokyo and Philadelphia?
Philadelphia is currently 13 hours behind Tokyo. That gap becomes 14 hours on Sunday, November 1, 2026, when Philadelphia changes its clocks.
How many hours behind is Philadelphia from Tokyo?
Philadelphia is 13 hours behind Tokyo. Looking at it the other way, Tokyo is 13 hours ahead of Philadelphia.
What time is it in Philadelphia when it is 9:00 AM in Tokyo?
When it is 9:00 AM in Tokyo, it is 8:00 PM the previous day in Philadelphia.
Is Philadelphia ahead of or behind Tokyo?
Philadelphia is 13 hours behind Tokyo. Tokyo reaches each point in the day first, so Philadelphia is still getting started while the Tokyo working day is finishing.
What is the best time to call between Tokyo and Philadelphia?
Standard business hours in Tokyo and Philadelphia do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 7:00 AM to 11:00 AM in Tokyo, which is 6:00 PM to 10:00 PM in Philadelphia.
Does the time difference between Tokyo and Philadelphia change during the year?
Yes. Philadelphia observes Daylight Saving Time and Tokyo does not, so the gap between them shifts during the year. It changes to 14 hours on Sunday, November 1, 2026.
What time zones are Tokyo and Philadelphia in?
Tokyo uses the Asia/Tokyo time zone, currently JST (UTC+9:00). Philadelphia uses America/New_York, currently EDT (UTC-4:00).