Seattle, WA to Greenwich, CT: time difference
Greenwich, CT 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 21:03 9:03 PM Greenwich, CT 00:03 12:03 AM You –:–
21:03 9:03 PM
Pacific Daylight Time · UTC-7
☀️ 07:33 · 🌙 18:17
00:03 12:03 AM
Eastern Daylight Time · UTC-4
☀️ 07:10 · 🌙 18:11
·
+3 h
Greenwich, CT is 3 h ahead of Seattle, WA.
When you, Seattle, WA and Greenwich, CT 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
🇺🇸 Greenwich, CT
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
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Time zones side by side
| Detail | 🇺🇸 Seattle, WA | 🇺🇸 Greenwich, CT |
|---|---|---|
| Local time | 21:03 | 00:03 |
| Local date | Sunday, October 18, 2026 | Monday, October 19, 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 | 07:33 | 07:10 |
| Sunset | 18:17 | 18:11 |
| Daylight | 10 h 44 min | 11 h 1 min |
| People on this clock | 737,015 | 62,077 |
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 Greenwich, CT: common questions
How far ahead of Seattle, WA, is Greenwich, CT?
Greenwich is 3 hours ahead of Seattle: UTC−4 against UTC−7.
What time is it in Greenwich, CT, when it is 9:00 AM in Seattle, WA?
When it is 9:00 AM in Seattle, it is 12:00 PM in Greenwich.
If it is 6:00 PM in Seattle, WA, what time is it in Greenwich, CT?
At 6:00 PM in Seattle, clocks in Greenwich show 9:00 PM.
Is there a time when both Seattle, WA, and Greenwich, CT, are at work?
Yes: from 9:00 AM to 3:00 PM in Seattle (12:00 PM to 6:00 PM in Greenwich), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Greenwich, CT?
From 9:00 PM in Seattle, WA, it is already the next day in Greenwich. The other way round, until 3:00 AM in Greenwich it is still the previous day in Seattle.
Is the time difference between Seattle, WA, and Greenwich, CT, the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 3 hours.
