New Castle, DE to Seattle, WA: time difference
Seattle, WA is 3 h behind New Castle, DE. 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.
New Castle, DE 23:00 11:00 PM Seattle, WA 20:00 8:00 PM You –:–
23:00 11:00 PM
Eastern Daylight Time · UTC-4
☀️ 07:19 · 🌙 18:16
20:00 8:00 PM
Pacific Daylight Time · UTC-7
☀️ 07:37 · 🌙 18:12
·
−3 h
Seattle, WA is 3 h behind New Castle, DE.
When you, New Castle, DE and Seattle, WA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 New Castle, DE
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
🇺🇸 Seattle, WA
21 9 PM 22 10 PM 23 11 PM 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
📍 Your time
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Time zones side by side
| Detail | 🇺🇸 New Castle, DE | 🇺🇸 Seattle, WA |
|---|---|---|
| Local time | 23:00 | 20:00 |
| Local date | Wednesday, October 21, 2026 | Wednesday, October 21, 2026 |
| Time zone | Eastern Daylight Time | Pacific Daylight Time |
| UTC offset | UTC-4 | UTC-7 |
| Offset from New Castle, DE | — | −3 h |
| IANA zone | America/New York | America/Los Angeles |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 07:19 | 07:37 |
| Sunset | 18:16 | 18:12 |
| Daylight | 10 h 57 min | 10 h 34 min |
| People on this clock | 21,926 | 737,015 |
Compare New Castle, DE with another city
More comparisons with New Castle, DE: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
New Castle, DE and Seattle, WA: common questions
What is the time difference between New Castle, DE, and Seattle, WA?
Seattle is 3 hours behind: it uses UTC−7, while New Castle is on UTC−4.
What time is it in Seattle, WA, when it is 9:00 AM in New Castle, DE?
When it is 9:00 AM in New Castle, it is 6:00 AM in Seattle.
What time is it in Seattle, WA, when it is 6:00 PM in New Castle, DE?
When it is 6:00 PM in New Castle, it is 3:00 PM in Seattle.
When do working hours in New Castle, DE, and in Seattle, WA, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 12:00 PM to 6:00 PM in New Castle, which is 9:00 AM to 3:00 PM in Seattle.
Until what time in New Castle, DE, is it still yesterday in Seattle, WA?
Before 3:00 AM in New Castle, the date in Seattle has not changed yet. From 9:00 PM in Seattle, it is already the next day in New Castle.
Does the time gap between New Castle, DE, and Seattle, WA, change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 3 hours.
