Seattle, WA to New Castle, PA: time difference
New Castle, PA is 3 h ahead of Seattle, WA. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Seattle, WA 18:31 6:31 PM New Castle, PA 21:31 9:31 PM You –:–
18:31 6:31 PM
Pacific Daylight Time · UTC-7
☀️ 07:36 · 🌙 18:13
21:31 9:31 PM
Eastern Daylight Time · UTC-4
☀️ 07:39 · 🌙 18:35
·
+3 h
New Castle, PA is 3 h ahead of Seattle, WA.
When you, Seattle, WA and New Castle, PA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Seattle, WA
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇺🇸 New Castle, PA
3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
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Time zones side by side
| Detail | 🇺🇸 Seattle, WA | 🇺🇸 New Castle, PA |
|---|---|---|
| Local time | 18:31 | 21:31 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Pacific Daylight Time | Eastern Daylight Time |
| UTC offset | UTC-7 | UTC-4 |
| Offset from Seattle, WA | — | +3 h |
| IANA zone | America/Los Angeles | America/New York |
| Daylight saving | On summer time → UTC-8, Nov 1, 01:00 | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 07:36 | 07:39 |
| Sunset | 18:13 | 18:35 |
| Daylight | 10 h 37 min | 10 h 56 min |
| People on this clock | 737,015 | 21,926 |
Compare Seattle, WA with another city
More comparisons with Seattle, WA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seattle, WA and New Castle, PA: common questions
How many hours ahead of Seattle, WA, is New Castle, PA?
The clocks in New Castle are 3 hours ahead of those in Seattle (UTC−4 and UTC−7).
What time is it in New Castle, PA, at the start of the working day in Seattle, WA?
The working day in Seattle starts at 9:00 AM; in New Castle it is 12:00 PM at that moment.
What time is it in New Castle, PA, at the end of the working day in Seattle, WA?
The working day in Seattle ends at 6:00 PM; in New Castle it is 9:00 PM at that moment.
When is a good time to call New Castle, PA, from Seattle, WA?
Between 9:00 AM and 3:00 PM in Seattle – that is 12:00 PM to 6:00 PM in New Castle – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in New Castle, PA?
From 9:00 PM in Seattle, WA, it is already the next day in New Castle. The other way round, until 3:00 AM in New Castle it is still the previous day in Seattle.
Does the time difference between Seattle, WA, and New Castle, PA, change?
No. The clocks in Seattle and in New Castle change on the same dates, so the difference stays 3 hours.
