Seattle, WA to New Castle, DE: time difference
New Castle, DE 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 20:37 8:37 PM New Castle, DE 23:37 11:37 PM You –:–
20:37 8:37 PM
Pacific Daylight Time · UTC-7
☀️ 07:37 · 🌙 18:12
23:37 11:37 PM
Eastern Daylight Time · UTC-4
☀️ 07:19 · 🌙 18:16
·
+3 h
New Castle, DE is 3 h ahead of Seattle, WA.
When you, Seattle, WA and New Castle, DE 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, DE
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
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- Working hours
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Time zones side by side
| Detail | 🇺🇸 Seattle, WA | 🇺🇸 New Castle, DE |
|---|---|---|
| Local time | 20:37 | 23:37 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 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 | 07:37 | 07:19 |
| Sunset | 18:12 | 18:16 |
| Daylight | 10 h 34 min | 10 h 57 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, DE: common questions
How many hours ahead of Seattle, WA, is New Castle, DE?
The clocks in New Castle are 3 hours ahead of those in Seattle (UTC−4 and UTC−7).
If it is 9:00 AM in Seattle, WA, what time is it in New Castle, DE?
At 9:00 AM in Seattle, clocks in New Castle show 12:00 PM.
What time is it in New Castle, DE, 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.
Is there a time when both Seattle, WA, and New Castle, DE, are at work?
Yes: from 9:00 AM to 3:00 PM in Seattle (12:00 PM to 6:00 PM in New Castle), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in New Castle, DE, compared with Seattle, WA?
The new day starts in New Castle earlier: at 9:00 PM in Seattle it is already midnight there. Until 3:00 AM in New Castle, Seattle is still on the previous day.
Is the time difference between Seattle, WA, and New Castle, DE, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 3 hours.
