Boston to Philadelphia Time Difference
Philadelphia and Boston are on the same clock time. There is no time difference between them right now.
Is There a Time Difference Between Boston and Philadelphia?
No — Philadelphia and Boston are on exactly the same clock. Whatever the time is in Boston, it is the same in Philadelphia, so nothing needs converting between them.
Best Time to Call Boston and Philadelphia
Both cities are inside normal business hours between 9:00 AM and 5:00 PM in Boston — that's 9:00 AM to 5:00 PM in Philadelphia. That's an 8-hour window, so a call fits comfortably in either side's working day.
both at work Boston only Philadelphia only neither — hours shown along the strip are Boston local time.
Convert a Specific Time
Pick any date and time in Boston to see the exact equivalent in Philadelphia.
Common Times Converted
Boston time on the left, Philadelphia time on the right.
Boston to Philadelphia: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Boston. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Boston | Philadelphia | Working hours |
|---|---|---|
| 12:00 AM | 12:00 AM | — |
| 1:00 AM | 1:00 AM | — |
| 2:00 AM | 2:00 AM | — |
| 3:00 AM | 3:00 AM | — |
| 4:00 AM | 4:00 AM | — |
| 5:00 AM | 5:00 AM | — |
| 6:00 AM | 6:00 AM | — |
| 7:00 AM | 7:00 AM | — |
| 8:00 AM | 8:00 AM | — |
| 9:00 AM | 9:00 AM | Both cities |
| 10:00 AM | 10:00 AM | Both cities |
| 11:00 AM | 11:00 AM | Both cities |
| 12:00 PM | 12:00 PM | Both cities |
| 1:00 PM | 1:00 PM | Both cities |
| 2:00 PM | 2:00 PM | Both cities |
| 3:00 PM | 3:00 PM | Both cities |
| 4:00 PM | 4:00 PM | Both cities |
| 5:00 PM | 5:00 PM | — |
| 6:00 PM | 6:00 PM | — |
| 7:00 PM | 7:00 PM | — |
| 8:00 PM | 8:00 PM | — |
| 9:00 PM | 9:00 PM | — |
| 10:00 PM | 10:00 PM | — |
| 11:00 PM | 11:00 PM | — |
Understanding the Boston – Philadelphia Time Difference
Boston runs on America/New_York, currently EDT (UTC-4:00). Philadelphia runs on America/New_York, currently EDT (UTC-4:00). Both offsets are identical right now, which is why the two cities show the same clock time.
Both cities sit in the same time zone, so they never diverge: any daylight saving change applies to both of them on the same date, and they stay in step all year.
Boston today
Philadelphia today
Frequently Asked Questions
What is the time difference between Boston and Philadelphia?
There is currently no time difference between Boston and Philadelphia. Both cities are on the same clock time right now.
What time is it in Philadelphia when it is 9:00 AM in Boston?
When it is 9:00 AM in Boston, it is 9:00 AM in Philadelphia.
What is the best time to call between Boston and Philadelphia?
Between 9:00 AM and 5:00 PM Boston time, which is 9:00 AM to 5:00 PM in Philadelphia. Both cities are inside normal business hours during that window.
Does the time difference between Boston and Philadelphia change during the year?
No. Boston and Philadelphia are in the same time zone (America/New_York), so they always show the same time. Any daylight saving change applies to both of them on the same date.
What time zones are Boston and Philadelphia in?
Boston uses the America/New_York time zone, currently EDT (UTC-4:00). Philadelphia uses America/New_York, currently EDT (UTC-4:00).