Houston PhiladelphiaTime Converter
Houston (CDT, UTC−5) is currently 1 hour behind Philadelphia (EDT, UTC−4). Compare live clocks, convert any hour, and find times to meet.
Quick answer
When it's in Houston, it's the same day in Philadelphia.
Houston (CST/CDT) runs 1 hour behind Philadelphia (EST/EDT). Both sides keep standard office hours with a real 9–6 overlap — the highlighted window below works for everyone.
- Time difference
- +1h 00m
- Houston
- UTC−5
- Philadelphia
- UTC−4
- Best call window
- 9:00 AM CDT
Houston to Philadelphia conversion table
The next 12 hours in Houston and the matching local time in Philadelphia. The current hour is highlighted; drag the converter's slider and the table follows.
| Houston · CDT | Philadelphia · EDT |
|---|---|
| NOW Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Mon, Jun 22 |
Best time to meet between Houston & Philadelphia
Working hours are 9am–6pm in each city. The bright band is where they overlap — when both sides are at their desks.
This time difference never changes
Neither side observes daylight saving against the other, so the gap stays constant all year. Clocks in Houston move back 1 hour to CST (UTC−6) on Sunday, November 1, 2026. Clocks in Philadelphia move back 1 hour to EST (UTC−5) on Sunday, November 1, 2026. This page always shows the live, DST-aware difference.
Related time zone conversions
Jump straight to another pair — every combination is a live tool, not an article.
From Houston
To Philadelphia
One source of truth — for you and your AI
This page exposes the same answer as structured data, so when you ask an assistant "what's 9am Houston time in Philadelphia?", it can cite the exact, DST-aware result — not a stale blog post.
- Schema.org JSON-LD on every converter page
- A machine-readable facts island with IANA zones and every possible offset
- Live times in <time datetime> elements with explicit UTC offsets
{
"pair": "Houston → Philadelphia",
"url": "https://worldclock.pro/en/convert/houston-to-philadelphia",
"from": {
"name": "Houston",
"type": "city",
"abbreviation": "CST",
"daylightAbbreviation": "CDT",
"iana": "America/Chicago",
"standardUtcOffset": "-06:00",
"daylightUtcOffset": "-05:00",
"referenceCity": "Houston"
},
"to": {
"name": "Philadelphia",
"type": "city",
"abbreviation": "EST",
"daylightAbbreviation": "EDT",
"iana": "America/New_York",
"standardUtcOffset": "-05:00",
"daylightUtcOffset": "-04:00",
"referenceCity": "Philadelphia"
},
"currentDifferenceMinutes": 60,
"possibleDifferencesMinutes": [
60
],
"note": "The difference is constant year-round."
}
Frequently asked questions
What is the time difference between Houston and Philadelphia?
Houston is currently 1 hour behind Philadelphia. Houston is on CDT (UTC−5) and Philadelphia is on EDT (UTC−4). The difference can change when either side starts or ends daylight saving time.
Is Philadelphia ahead of or behind Houston?
Philadelphia is currently 1 hour ahead of Houston.
When it is 9:00 AM in Houston, what time is it in Philadelphia?
When it is 9:00 AM on a Monday in Houston, it is 10:00 AM in Philadelphia.
Do Houston and Philadelphia observe daylight saving time?
Clocks in Houston move back 1 hour to CST (UTC−6) on Sunday, November 1, 2026. Clocks in Philadelphia move back 1 hour to EST (UTC−5) on Sunday, November 1, 2026.
How do I convert Houston time to Philadelphia time?
Add 1 hour to any time in Houston to get the time in Philadelphia. This page's converter and 24-hour table do it automatically and stay correct through daylight-saving changes.
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