Bangkok to Philadelphia Time Difference
Philadelphia is 11 hours behind Bangkok. When it's 11:30:19 PM in Bangkok, it's 12:30:19 PM in Philadelphia.
How Many Hours Behind Is Philadelphia From Bangkok?
Philadelphia is 11 hours behind Bangkok. So Bangkok is 11 hours ahead of Philadelphia looking the other way — the same gap, described from the other end.
In practice that means a working day in Bangkok starts when it is already 10:00 PM the previous day in Philadelphia. The gap is not fixed all year: it becomes 12 hours on Sunday, November 1, 2026, when Philadelphia changes its clocks.
Best Time to Call Bangkok and Philadelphia
Standard 9-to-5 hours in Bangkok and Philadelphia never overlap, so someone has to take the call outside their working day. The most workable window is 6:00 PM to 10:00 PM in Bangkok, which is 7:00 AM to 11:00 AM in Philadelphia.
both at work Bangkok only Philadelphia only neither — hours shown along the strip are Bangkok local time.
Convert a Specific Time
Pick any date and time in Bangkok to see the exact equivalent in Philadelphia.
Common Times Converted
Bangkok time on the left, Philadelphia time on the right.
Bangkok to Philadelphia: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Bangkok. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Bangkok | Philadelphia | Working hours |
|---|---|---|
| 12:00 AM | 1:00 PM prev day | Philadelphia only |
| 1:00 AM | 2:00 PM prev day | Philadelphia only |
| 2:00 AM | 3:00 PM prev day | Philadelphia only |
| 3:00 AM | 4:00 PM prev day | Philadelphia only |
| 4:00 AM | 5:00 PM prev day | — |
| 5:00 AM | 6:00 PM prev day | — |
| 6:00 AM | 7:00 PM prev day | — |
| 7:00 AM | 8:00 PM prev day | — |
| 8:00 AM | 9:00 PM prev day | — |
| 9:00 AM | 10:00 PM prev day | Bangkok only |
| 10:00 AM | 11:00 PM prev day | Bangkok only |
| 11:00 AM | 12:00 AM | Bangkok only |
| 12:00 PM | 1:00 AM | Bangkok only |
| 1:00 PM | 2:00 AM | Bangkok only |
| 2:00 PM | 3:00 AM | Bangkok only |
| 3:00 PM | 4:00 AM | Bangkok only |
| 4:00 PM | 5:00 AM | Bangkok only |
| 5:00 PM | 6:00 AM | — |
| 6:00 PM | 7:00 AM | — |
| 7:00 PM | 8:00 AM | — |
| 8:00 PM | 9:00 AM | Philadelphia only |
| 9:00 PM | 10:00 AM | Philadelphia only |
| 10:00 PM | 11:00 AM | Philadelphia only |
| 11:00 PM | 12:00 PM | Philadelphia only |
Understanding the Bangkok – Philadelphia Time Difference
Bangkok runs on Asia/Bangkok, currently UTC+7:00. Philadelphia runs on America/New_York, currently EDT (UTC-4:00). The gap of 11 hours is simply the distance between those two offsets.
Philadelphia observes Daylight Saving Time and Bangkok 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 12 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in the United States.
Bangkok today
Philadelphia today
Frequently Asked Questions
What is the time difference between Bangkok and Philadelphia?
Philadelphia is currently 11 hours behind Bangkok. That gap becomes 12 hours on Sunday, November 1, 2026, when Philadelphia changes its clocks.
How many hours behind is Philadelphia from Bangkok?
Philadelphia is 11 hours behind Bangkok. Looking at it the other way, Bangkok is 11 hours ahead of Philadelphia.
What time is it in Philadelphia when it is 9:00 AM in Bangkok?
When it is 9:00 AM in Bangkok, it is 10:00 PM the previous day in Philadelphia.
Is Philadelphia ahead of or behind Bangkok?
Philadelphia is 11 hours behind Bangkok. Bangkok reaches each point in the day first, so Philadelphia is still getting started while the Bangkok working day is finishing.
What is the best time to call between Bangkok and Philadelphia?
Standard business hours in Bangkok and Philadelphia do not overlap at all, so one side has to step outside the 9-to-5. The most workable window is 6:00 PM to 10:00 PM in Bangkok, which is 7:00 AM to 11:00 AM in Philadelphia.
Does the time difference between Bangkok and Philadelphia change during the year?
Yes. Philadelphia observes Daylight Saving Time and Bangkok does not, so the gap between them shifts during the year. It changes to 12 hours on Sunday, November 1, 2026.
What time zones are Bangkok and Philadelphia in?
Bangkok uses the Asia/Bangkok time zone, currently UTC+7:00. Philadelphia uses America/New_York, currently EDT (UTC-4:00).