Time difference
Houston to Philadelphia Time Difference
Philadelphia is 1 hour ahead of Houston — when it's 12:00 PM in Houston, it's 1:00 PM in Philadelphia. (Houston (America/Chicago, CDT); Philadelphia (America/New_York, EDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Philadelphia is 1 hour ahead of Houston. The best window for a call is 9 AM–4 PM in Houston, which is 10 AM–5 PM in Philadelphia — a 7-hour overlap inside 9 AM–5 PM on both sides. Houston and Philadelphia change their clocks together (or don't change at all), so the time difference between them stays the same all year.
- When it's 9:00 AM in Houston, it's 10:00 AM in Philadelphia.
- When it's 9:00 AM in Philadelphia, it's 8:00 AM in Houston.
Philadelphia is currently 1 hour ahead of Houston.
Interactive converter
12:00PM
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Best times to meet
The 9 AM – 5 PM business windows in Houston and Philadelphia overlap for 7 hours. 9 AM–4 PM in Houston is 10 AM–5 PM in Philadelphia. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Houston | Philadelphia |
|---|---|
| 12 AM | 1:00 AM |
| 1 AM | 2:00 AM |
| 2 AM | 3:00 AM |
| 3 AM | 4:00 AM |
| 4 AM | 5:00 AM |
| 5 AM | 6:00 AM |
| 6 AM | 7:00 AM |
| 7 AM | 8:00 AM |
| 8 AM | 9:00 AM |
| 9 AM | 10:00 AM |
| 10 AM | 11:00 AM |
| 11 AM | 12:00 PM |
| 12 PM | 1:00 PM |
| 1 PM | 2:00 PM |
| 2 PM | 3:00 PM |
| 3 PM | 4:00 PM |
| 4 PM | 5:00 PM |
| 5 PM | 6:00 PM |
| 6 PM | 7:00 PM |
| 7 PM | 8:00 PM |
| 8 PM | 9:00 PM |
| 9 PM | 10:00 PM |
| 10 PM | 11:00 PM |
| 11 PM | 12:00 AM (next day) |
Daylight saving
On November 1, 2026, both Houston and Philadelphia shift for daylight saving. After that, Philadelphia will be 1 hour ahead of Houston (currently 1 hour ahead of Houston). The converter and the tables above always reflect the correct offset for the date you pick.
- Houston is currently observing daylight saving time.
- Philadelphia is currently observing daylight saving time.
Frequently asked questions
- Is Philadelphia ahead of or behind Houston?
- Philadelphia is 1 hour ahead of Houston.
- How many hours ahead of Houston is Philadelphia?
- Philadelphia is 1 hour ahead of Houston.
- What time is 9 AM in Houston in Philadelphia?
- 9:00 AM in Houston is 10:00 AM in Philadelphia.
- What time is noon in Houston in Philadelphia?
- 12:00 PM in Houston is 1:00 PM in Philadelphia.
- What time is 5 PM in Houston in Philadelphia?
- 5:00 PM in Houston is 6:00 PM in Philadelphia. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Houston in Philadelphia?
- 3:00 PM in Houston is 4:00 PM in Philadelphia.
- Is Houston currently observing daylight saving time?
- Houston is currently observing daylight saving time (summer time).
- Is Philadelphia currently observing daylight saving time?
- Philadelphia is currently observing daylight saving time (summer time).
- Do Houston and Philadelphia observe daylight saving?
- On November 1, 2026, both Houston and Philadelphia shift for daylight saving. After that, Philadelphia will be 1 hour ahead of Houston (currently 1 hour ahead of Houston). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Philadelphia from Houston?
- Aim for 9 AM–4 PM in Houston, which is 10 AM–5 PM in Philadelphia.
- When is the best time to call Houston from Philadelphia?
- Aim for 10 AM–5 PM in Philadelphia, which is 9 AM–4 PM in Houston.
- Houston (CDT) to Philadelphia (EDT) — how do I convert quickly?
- Add 1 hour to Houston local time to get Philadelphia local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- Houston to New York
- Houston to London
- Houston to Tokyo
- Dubai to Houston
- Houston to Singapore
- Houston to Los Angeles
- Houston to Sydney
- Houston to Paris
- Houston to Mumbai
- Hong Kong to Houston