Time difference
Philadelphia to Seattle Time Difference
Seattle is 3 hours behind Philadelphia — when it's 12:00 PM in Philadelphia, it's 9:00 AM in Seattle. (Philadelphia (America/New_York, EDT); Seattle (America/Los_Angeles, PDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Seattle is 3 hours behind Philadelphia. The best window for a call is 12 PM–5 PM in Philadelphia, which is 9 AM–2 PM in Seattle — a 5-hour overlap inside 9 AM–5 PM on both sides. Philadelphia and Seattle 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 Philadelphia, it's 6:00 AM in Seattle.
- When it's 9:00 AM in Seattle, it's 12:00 PM in Philadelphia.
Seattle is currently 3 hours behind Philadelphia.
Interactive converter
12:00PM
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Best times to meet
The 9 AM – 5 PM business windows in Philadelphia and Seattle overlap for 5 hours. 12 PM–5 PM in Philadelphia is 9 AM–2 PM in Seattle. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Philadelphia | Seattle |
|---|---|
| 12 AM | 9:00 PM (prev day) |
| 1 AM | 10:00 PM (prev day) |
| 2 AM | 11:00 PM (prev day) |
| 3 AM | 12:00 AM |
| 4 AM | 1:00 AM |
| 5 AM | 2:00 AM |
| 6 AM | 3:00 AM |
| 7 AM | 4:00 AM |
| 8 AM | 5:00 AM |
| 9 AM | 6:00 AM |
| 10 AM | 7:00 AM |
| 11 AM | 8:00 AM |
| 12 PM | 9:00 AM |
| 1 PM | 10:00 AM |
| 2 PM | 11:00 AM |
| 3 PM | 12:00 PM |
| 4 PM | 1:00 PM |
| 5 PM | 2:00 PM |
| 6 PM | 3:00 PM |
| 7 PM | 4:00 PM |
| 8 PM | 5:00 PM |
| 9 PM | 6:00 PM |
| 10 PM | 7:00 PM |
| 11 PM | 8:00 PM |
Daylight saving
On November 1, 2026, both Philadelphia and Seattle shift for daylight saving. After that, Seattle will be 3 hours behind Philadelphia (currently 3 hours behind Philadelphia). The converter and the tables above always reflect the correct offset for the date you pick.
- Philadelphia is currently observing daylight saving time.
- Seattle is currently observing daylight saving time.
Frequently asked questions
- Is Seattle ahead of or behind Philadelphia?
- Seattle is 3 hours behind Philadelphia.
- How many hours behind Philadelphia is Seattle?
- Seattle is 3 hours behind Philadelphia.
- What time is 9 AM in Philadelphia in Seattle?
- 9:00 AM in Philadelphia is 6:00 AM in Seattle.
- What time is noon in Philadelphia in Seattle?
- 12:00 PM in Philadelphia is 9:00 AM in Seattle.
- What time is 5 PM in Philadelphia in Seattle?
- 5:00 PM in Philadelphia is 2:00 PM in Seattle. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Philadelphia in Seattle?
- 3:00 PM in Philadelphia is 12:00 PM in Seattle.
- Is Philadelphia currently observing daylight saving time?
- Philadelphia is currently observing daylight saving time (summer time).
- Is Seattle currently observing daylight saving time?
- Seattle is currently observing daylight saving time (summer time).
- Do Philadelphia and Seattle observe daylight saving?
- On November 1, 2026, both Philadelphia and Seattle shift for daylight saving. After that, Seattle will be 3 hours behind Philadelphia (currently 3 hours behind Philadelphia). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Seattle from Philadelphia?
- Aim for 12 PM–5 PM in Philadelphia, which is 9 AM–2 PM in Seattle.
- When is the best time to call Philadelphia from Seattle?
- Aim for 9 AM–2 PM in Seattle, which is 12 PM–5 PM in Philadelphia.
- Philadelphia (EDT) to Seattle (PDT) — how do I convert quickly?
- Subtract 3 hours from Philadelphia local time to get Seattle local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- New York to Philadelphia
- London to Philadelphia
- Philadelphia to Tokyo
- Dubai to Philadelphia
- Philadelphia to Singapore
- Los Angeles to Philadelphia
- Philadelphia to Sydney
- Paris to Philadelphia
- Mumbai to Philadelphia
- Hong Kong to Philadelphia